Download or read book Investigation of the Effect of Microstructure and Texture on the Fatigue Properties and Deformation Modes of an Alpha Beta Titanium Alloy Ti 6Al 2Nb 1Ta 0 8Mo written by Donald Shengduen Shih and published by . This book was released on 1983 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of the Effects of Microstructure on the Deformation Modes and Mechanical Properties of Ti 6Al 2Cb 1 Ta 0 3 Mo written by E. A. Starke and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Deformation and Texture Evolution of Ti 10V 2Fe 3Al written by Juan Zhao and published by . This book was released on 2015 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beta titanium alloys form one of the most versatile classes of materials with respect to processing, microstructure, and mechanical properties. Owing to their body centered cubic structure, [beta] titanium alloys offer an attractive alternative to the [alpha]+[beta] and [alpha] alloys as they usually possess higher specific strengths, better heat treat ability, deep hardening properties, and lower processing temperatures. However, beta titanium alloys are very sensitive to deformation parameters and may produce quite different microstructures and further various mechanical properties. It is necessary to explore the effect of deformation parameters on the microstructure evolution, including testing temperature, strain rate and strain.Texture introduced by deformation may produce a strong anisotropy of mechanical and other properties, and can also lead to the localization of these properties. Therefore, in order to make use of the advantages of [beta] titanium alloys, we must also understand the evolution of texture.The aim of this project is to reveal the deformation mechanisms and the evolution of texture during hot deformation in [beta] titanium based on compression tests, optical microscopy (OM), scanning electron microscopy (SEM) and texture evolution by Electron backscattered diffraction (EBSD) and x-ray texture observation.The microstructure, texture and mechanical response of forged Ti-10V-2Fe-3Al plates were investigated. Forged plates of as-received Ti-10V-2Fe-3Al alloy features fine [alpha] phase in large [beta] grains. Yield locus tests were performed which confirmed that [beta] phase {001} 110 texture resulted in lower mechanical anisotropy in the forged plate. The relationship between [alpha] phase and [beta] matrix texture was characterized by EBSD. The Burgers relationship is observed between these two phases in the as-received state, and this is preserved from the forging process and following 760 °C heat treatment. After further heat treatment at 820 °C, both [beta] phase and [alpha] phase form recrystallization textures and the Burgers relationship is no longer obvious. Furthermore, through thickness texture inhomogeneity was studied in the as-received plate. A rotated cube texture is widely spread at the surface, and more intense at quarter thickness and center. At the surface there is a tendency to form the {111} 112 recrystallization texture while in the quarter thickness and center, the restoration mode is mainly recovery.Following solution treatment in single [beta] phase field, deformation in [alpha]+[beta] phase field was performed, which presented a considerable effect on [alpha] phase morphologies. The microstructure of [alpha] phase is basically an evolution of lamellar [alpha] breaking up into shorter lamellar and coarsening into globular morphologies. Dynamic recovery is the main restoration mechanism for [beta] phase. The dominant orientations of beta phase include a strong rotated cube texture and weak 111 orientations parallel to compression direction. The orientation relationship between [alpha] phase and [beta] matrix follows the Burgers relationship and deformation in [alpha]+[beta] phase field does not destroy this orientation relationship.Deformation at above [beta] transus temperature leads to strong 001 and weak 111 textures. With increasing temperature and decreasing strain rate, the 001 texture gets strengthened gradually and 111 orientations show weakening tendency. The volume fractions of dynamic recrystallization are lower than 10% under all the deformation conditions in the single [beta] phase field, showing the main dynamic restoration mechanism is also dynamic recovery at above [beta] transus temperature tested in this thesis. Moreover, deformation parameters show significant effects on microstructure evolution. At low strain rate, dislocation annihilation and dynamic recovery are very effective, resulting in significantly larger subgrain size and less pancaked original grains. Besides dynamic recovery, continuous dynamic recrystallization by progressive lattice rotation is also observed, which occurs at high strain rate and low temperature. Geometric dynamic recrystallization hardly occurs, as HAGB spacing is much larger than the subgrain size at the highest strain of 0.9. Discontinuous dynamic recrystallization is rarely observed in the sing [beta] phase field in Ti-10V-2Fe-3Al.

Download or read book Fatigue of Beta Processed and Beta Heat treated Titanium Alloys written by Russell Wanhill and published by Springer Science & Business Media. This book was released on 2011-10-28 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication reviews most of the available literature on the fatigue properties of β annealed Ti-6Al-4V and titanium alloys with similar microstructures. The focus is on β processed and β heat-treated alloys because β annealed Ti-6Al-4V has been selected for highly loaded and fatigue-critical structures, including the main wing-carry-through bulkheads and vertical tail stubs, of advanced high-performance military aircraft. An important aspect of the review is a concise survey of fatigue life assessment methods and the required types of fatigue data. This survey provides the background to recommendations for further research, especially on the fatigue behaviour of β annealed Ti-6Al-4V under realistic fatigue load histories, including the essential topic of short/small fatigue crack growth. Such research is required for independent fatigue life assessments that conform to the aircraft manufacturer’s design requirements, and also for life reassessments that most probably will have to be made during the service life of the aircraft.

Download or read book The Development of Textures and Microstructures in Alpha beta Titanium Alloys written by Dhriti Bhattacharyya and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: The relationship between the texture and the microstructure of both beta processed and alpha/beta processed Ti alloys has been examined in this study. In the beta-processed microstructures, it has been shown that two sets of alpha colonies sharing a common 0001 plane and rotated by 10.5° from each other may have growth directions which have very large angles of about 80.7° between them. Moreover, it was observed that alpha laths growing from certain prior beta grain boundaries sometimes shared common basal planes. In some special cases, the alpha laths growing into two different prior beta grains from the grain boundary between them had almost exactly the same orientation, although they had vastly different growth directions. Additionally, there were some cases in which alpha laths growing into different prior beta grains not only had the same crystallographic orientation, but also had the same growth direction. Scanning Electron Microscopy (SEM), Orientation Imaging Microscopy (OIM) and Transmission Electron Microscopy (TEM) have been used to investigate these phenomena and the existing theories of growth directions have been used in conjunction with the results obtained to explain them. In alpha/beta-processed alloys, the phenomenon of globularization of alpha laths breaks down the beta-processed microstructure and modifies the texture of these alloys. Samples of Ti-6Al-4V having colony and basketweave microstructures were hot deformed in the high alpha/beta temperature range and their microstructure and microtexture were examined by the use of SEM and OIM. It is shown that the samples which had a colony microstructure had greater "clustering" of grains with similar orientations than those having a basketweave microstructure. The mode of transformation on heating from the alpha to the beta phase was investigated by measuring the texture of both phases at different temperatures, in situ, using the HIPPO instrument at the Los Alamos Neutron Science Center. A comparison of the pole figures for both phases has allowed an insight into the mode of transformation of the alpha to the beta phase, and it appears that the beta phase forms by the growth of the preexisting beta, and not by fresh nucleation of beta in the alpha phase.

Download or read book Influence of Metallurgical Factors on the Fatigue Crack Growth Rate in Alpha Beta Titanium Alloys written by J. C. Chesnutt and published by . This book was released on 1978 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research was conducted on two alpha-beta titanium alloys, Ti-6Al-4V and Ti-6Al-2Sn 4Zr-6Mo, as a function of alloy composition microstructure and strength level, environment, and fatigue loading conditions. A wide range of microstructural conditions, seven for Ti-6Al-4V and three for Ti-6Al-2Sn-4Zr-6Mo, was chosen to provide a full range of constituent types and morphologies and a range of mechanical properties. All the material for the program was obtained in the form of pancake forgings which were uniformly and weakly textured. The initial portion of the program consisted of material characterization and base line fatigue crack propagation (FCP) testing. Characterization included a full description of microstructures, as well as mechanical property testing, fracture toughness tests, S-N curve determination and measurement of other properties such as modulus and texture. Base line FCP testing in dry air at two stress ratios (R) of 0.1 and 0.3; and in a 3.5% NaCl solution at 1 and 20 Hz was conducted in this portion of the program. Results of this study included the determination that transformed beta microstructures generally exhibit the greatest fatigue crack propagation resistance and that increasing the load ration, R, can lead to significant increases in crack growth rate; the behavior in both cases was rationalized in terms of crack tip interaction with microstructural constituents.

Download or read book Alloy Texture and Microstructural Effects on the Yield Stress and Mixed Mode Fracture Toughness of Titanium written by WM. Parris and published by . This book was released on 1974 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mixed mode fracture toughness, KQ, behavior of alpha-beta titanium alloys was examined in terms of: (1) alloy effects of aluminum, oxygen, and beta stabilizer, (2) processing effects of hot-roll and anneal temperatures, and (3) test direction. In the Ti-4V alloy system, alloying and processing effects interact in their influence on KQ in a complex manner. In the Ti-2Mo alloy system, oxygen depresses KQ after alpha-beta rolling, whereas aluminum has a similar effect after beta rolling; in each case the alloy effect dominates that of yield strength. In the overall analysis, texture as implied by a test direction effect, significantly influences KQ. The oxygen, texture, and microstructural effects on KO were shown by statistical methods to qualitatively parallel findings in the literature on titanium alloys regarding the effects of these variables on KIc.

Download or read book A Study of Microstructure Tensile Deformation Cyclic Fatigue and Final Fracture Behavior of Commercially Pure Titanium and a Titanium Alloy written by Udaykar Bathini and published by . This book was released on 2010 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapid industrial growth and advances in the domains of engineering and related technologies during the last fifty years have led to the extensive use of traditional metals and their alloy counterparts. Titanium is one such metal which has gained wide popularity in the aerospace and defense related applications owing to a wide range of impressive mechanical properties like excellent specific strength ([sigma]UTS/[rho]), stiffness, corrosion and erosion resistance, fracture toughness and capability to withstand significant temperature variations. Two materials, namely commercial purity titanium (Grade 2), referred to henceforth as Ti-CP (Grade 2) and the "work-horse" alloy Ti-6Al-4V have been chosen for this research study. The intrinsic influence of material composition and test specimen orientation on the tensile and fatigue behavior for both Ti-CP (Grade 2) and Ti-6Al-4V have been discussed. Samples of both Ti-CP (Grade 2) and Ti-6Al-4V were prepared from the as-provided plate stock along both the longitudinal and transverse orientations. The specimens were then deformed to failure in uniaxial tension for the tensile tests and cyclically deformed at different values of maximum stress at constant load ratio of 0.1 for the high cycle fatigue tests. The microstructure, tensile properties, resultant fracture behavior of the two materials is presented in the light of results obtained from the uniaxial tensile tests. The conjoint influence of intrinsic microstructural features, nature of loading and specimen properties on the tensile properties is discussed. Also, the macroscopic fracture mode, the intrinsic features on the fatigue fracture surface and the role of applied stress-microstructural feature interactions in governing failure for the cyclic fatigue properties for both the materials under study Ti-CP (Grade 2) and the "work-horse" alloy Ti-6Al-4V have been discussed in detail. Careful study of the microstructure for Ti-CP (Grade 2) material at a low magnification revealed the primary alpha grains to be intermingled with small pockets of beta grains. Observation at the higher allowable magnifications of the optical microscope revealed very fine alpha phase lamellae located within the beta grain. The microhardness and macrohardness measurements were consistent through the sheet specimen for Ti-CP (Grade 2) and slightly lower compared to Ti-6Al-4V. However, the macrohardness was marginally higher than the microhardness resulting from the presence of a large volume fraction of the soft alpha phase. The hardness values when plotted reveal marginal spatial variability. Tensile fracture of Ti-CP (Grade 2) was at an inclination to the far field tensile stress axis for both longitudinal and transverse orientations. The overload region revealed a combination of fine microscopic cracks, microscopic voids of varying size and randomly distributed through the surface, and a large population of shallow dimples, features reminiscent of locally brittle and ductile failure mechanisms. The maximum stress ([sigma]maximum) versus fatigue life (Nf) characteristics shown by this material is quite different from those non-ferrous metals that exhibit a well-defined endurance limit. When compared at equal values of maximum stress at a load ratio of 0.1, the fatigue life of the transverse specimen is noticeably greater than the longitudinal counterpart. At equivalent values of maximum elastic strain, the transverse specimens revealed noticeably improved fatigue life as compared one-on-one to the longitudinal counterparts. Careful observations of the Ti-6Al-4V alloy microstructure over a range of magnifications spanning very low to high magnification revealed a duplex microstructure consisting of the near equiaxed alpha and transformed beta phases. The primary near equiaxed shaped alpha grains (light in color) was well distributed in a lamellar matrix with transformed beta (dark in color). The microhardness and macrohardness values recorded for the Ti-6Al-4V alloy reveal it to be harder than the commercially pure (Grade 2) material. However, for the Ti-6Al-4V alloy the microhardness is noticeably higher than the corresponding macrohardness value that can be ascribed to the presence of a population of processing-related artifacts and the hard beta-phase. Tensile fracture of the Ti-6Al-4V alloy was macroscopically rough and essentially normal to the far field stress axis for the longitudinal orientation and cup-and-cone morphology for the transverse orientation. However, microscopically, the surface was rough and covered with a population of macroscopic and fine microscopic cracks, voids of varying size, a population of shallow dimples of varying size and shape, features reminiscent of locally brittle and ductile failure mechanisms. When compared at equal values of maximum stress at a load ratio of 0.1, there is a marginal to no influence of microstructure on high cycle fatigue life of both orientations of the alloy.

Download or read book A Statistically Based Investigation of Microstructural Effects on the Fatigue Properties of Titanium and Titanium Alloys written by Dale Alan Wilson and published by . This book was released on 1978 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Microstructure on Fatigue Behavior of Titanium Alloys written by Vikas Sinha and published by . This book was released on 2000 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Microstructure on the Fatigue Properties of Ti 6Al 4V Bar written by LJ. Bartlo and published by . This book was released on 1969 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microstructure can have a significant effect on the mechanical properties of titanium alloys. The extent of this effect on the fatigue properties of the Ti-6Al-4V alloy in small diameter bar (0.625 in., 15.875 mm) was studied. Microstructural variations were produced by heat treating from 1550 to 1950 F at 100 F intervals. Three different cooling rates (furnace cooling, air cooling, and water quenching) were employed for each temperature. The room-temperature tensile, smooth, and notch-fatigue properties were evaluated for each thermal condition.

Download or read book Microstructure and Temperature Effects on the Fatigue Variability Behavior of AN Alpha beta Titanium Alloy and Implications for Life Prediction Postprint written by and published by . This book was released on 2006 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have studied the effects of microstructure and temperature on the fatigue variability behavior of the alpha+beta titanium alloy, Ti-6Al2Zr-4Sn-6Mo (Ti-6-2-4-6). These variables had separate influence on the minimum, and the mean behavior. This was related to perhaps a fundamental aspect of fatigue variability which dictates that at any stress level, the mean is dominated by a mechanism different from the one controlling the lower-tail behavior. As a result in this material, while the mean response was increasingly dominated by the crack initiation regime with decreasing stress level (which is the conventionally expected behavior), at the same time the life-limiting behavior was controlled by the crack growth regime. This produced a very systematic effect of microstructure and temperature on total uncertainty in lifetime depending on the sensitivity of crack initiation and growth regimes to these variables. We suggest a new paradigm to treat the fatigue variability behavior and show that, this can have significant implications for life management especially, with respect to reducing the uncertainty with life prediction and improving the reliability of design life.

Download or read book The Relationship of Microstructure and Mechanical Properties of Extruded Titanium Alloy Bars to the Prior Deformation Processing History written by Fred J. Gurney and published by . This book was released on 1971 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: The inter-relation of extrusion process variables with mechanical properties and microstructure is analyzed for three titanium alloys (Ti-5Al-2.5Sn, Ti-6Al-4V and Ti-13V-11Cr-3Al). Information is obtained from duplicate billets which were extruded at same conditions with one extruded bar allowed to air cool and the other bar water quenched immediately after extrusion. Results indicate that significant reduction in deformation loads can be achieved in alpha and alpha-beta titanium alloys by processing them in the beta temperature range. Resultant metallurgical structures and mechanical properties (room temperature tensile and Charpy V notch impact) are found to not be significantly affected by process variables other than preheat temperature and product cooling rate. In alpha and alpha-beta alloys, the room temperature strength properties of beta processed and water quenched product is significantly improved over those of beta processed and air cooled product and somewhat improved over those for alpha-beta processed followed by either air cooling or water quenching. Mechanical properties from the beta alloy are not significantly affected by process temperature or by product cooling rate except for some anomalous behavior in the 2050F processing temperature range. (Author).

Download or read book Elucidating the Role of Microstructure Texture and Microtexture on the Dwell Fatigue Response of Ti 6Al 4V written by Alec Mitchell Blankenship and published by . This book was released on 2016 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ambient temperature dwell sensitivity is known to be deleterious to the fatigue response of near-alpha titanium alloys. Dwell fatigue refers to the presence of a sustained hold at peak stress as opposed to the continuous variation of normal cyclic fatigue loading. This reduction in failure life-times from dwell loading is attributed to early crack nucleation and faster crack propagation. The degradation is the result of plastic anisotropy on the microstructural scale along with tendency of titanium alloys to creep at low temperatures at stresses well below the 0.2% offset yield strength. Despite being the most widely used titanium alloy, Ti-6Al-4V has not been the subject of most dwell fatigue research. Generally, dwell sensitivity is microstructurally dependent and believed to only affect Ti-6Al-4V when severe crystallographic texture is present and under high peak stress loading. Recent studies, however, have suggested that small clusters of preferred crystal orientations, known as micro-textured regions (MTR), can have a significant effect on the dwell sensitivities in Ti-6Al-4V even without severe overall texture in the material.In this study, smooth-bar fatigue specimens were subjected to uniaxial fatigue at 20 Hz cyclic and 2-min dwell loading conditions under load-control at stresses representative of service conditions, until failure occurred. A reduction in specimen life-times by approximately a factor of three was observed under dwell conditions, which was less than for the highly susceptible near-a titanium alloys such as Ti-6Al-2Sn-4Zr-2Mo, where the dwell debit is often in excess of a factor of ten. Measurement of fatigue and dwell fatigue crack growth rates revealed a significant acceleration of the dwell crack growth rates in certain cases. Backscattered electron imaging and electron backscattered diffraction were utilized to quantify the interaction between the cracks and local microstructure. Though no correlation was found between crack growth rate and the local microstructure and crack trajectory, strong correlation was found between crack growth and the presence of grains with [0001] axes at small angles (

Download or read book Effect of Microstructure on Fatigue Properties of Ti 6Al 4V written by Mohammed Ashraf Imam and published by . This book was released on 1978 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Deformation Study of the Novel Alpha beta Titanium Alloy Ti 407 written by Zachary Thomas Kloenne and published by . This book was released on 2020 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: Titanium and its alloys are very important to the advancement of aviation technology, as the strength-to-weight ratio of these alloys make them ideal for increased efficiency. Historically, alpha/beta titanium alloys have been used in the low temperature, low pressure region of a turbine engine, with Ti-6Al-4V being the most commonly used alloy, often referred to as the "workhorse" titanium alloy. However, Ti-6Al-4V experiences limitations in ductility, low-temperature machinability, fracture toughness, and perhaps most importantly, cost. To address these issues, alloy development was performed at TIMET corporation, with a focus on a low-Al containing alloy. A series of alloys were produced, with high strain rate mechanical response serving as a barometer for desired properties. Using this method, the alloy TIMETAL-407, referred to as Ti-407 henceforth, was developed, with an nominal composition of: Ti-0.85Al-3.85V, 0.25Fe-0.25Si-0.15O (wt.%), with the remaining balanced by titanium. Ti-407 displayed remarkable high strain rate properties, lending toward applications requiring increased resistance to impact loading. In addition to improved energy absorption properties, the low alloying content offers cost benefits when compared with its counterpart alloys, namely Ti-6Al-4V and Ti-3Al-2.5V. While enhanced properties in Ti-407 were observed in both high strain rate and nominal strain rate testing, the source of these properties remained unidentified. This work attempted to elucidate the bases for improved mechanical response in Ti-407. This has been achieved through a series of mechanical tests, followed by advanced characterization of deformed specimens. Additional insight was gained through through comparison of deformation mechanisms in Ti-407 with Ti-6Al-4V and Ti-3Al-2.5V, which provided information on opposed mechanisms. The results uncovered in this study have revealed a number of novel mechanisms related to the deformation of Ti-407, which included anomalous c+a dislocation activity in grains oriented favorably for a-type prismatic slip, reduced localization of slip, increased propensity for a-type pyramidal slip, and deformation through sliding at the alpha/beta interfaces. Reduction in slip localization has been attributed to the low Al content of Ti-407, while the source of interface sliding and c+a dislocation activity has been attributed to a segregation of Si to the alpha/beta interface, which results in a distortion to the alpha/beta interface, locally. The distortion has been determined to affect the habit plane of the alpha/beta interface.

Download or read book An Investigation Into the Effects of Microstructure and Texture on the High Strain Rate Behaviour of Ti 6AI 4V written by Euan Wielewski and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The core aim of this research project was to improve understanding of the effects of microstructure and crystallographic texture on the high strain rate plastic deformation behaviour of the industrially important Titanium alloy, Ti-6AI-4V. To facilitate this study, four rolled plates of Ti-6AI-4V, with varying thermo-mechanical processing histories, were provided by TIMET Corp., the world's largest supplier of Titanium product. To determine the nature of each plate's microstructure and the crystallographic texture of the dominant a phase, the four Ti-6AI-4V plates were microstructurally characterised using techniques such as optical microscopy and electron backscatter diffraction (EBSD). The effects of the measured microstructures and textures on the strain rate dependent plastic deformation behaviour of the four Ti-6AI-4V plates were investigated via a series of uniaxial compression and tension tests in the three orthogonal material orientations at quasi-static (10 3 s -1) and high strain rates (10 3 s -1) using a standard electro-mechanical test device and split-Hopkinson pressure bars (SHPB), respectively. To provide further understanding of the effects of microstructure and texture on the plastic deformation behaviour of Ti-6AI-4V, this time under complex impact loading conditions, the classic Taylor impact experiment was adapted to include an optical measurement and geometry reconstruction technique. A novel experimental setup was designed that consists of an ultra-high speed camera and mirror arrangement, allowing the Taylor impact specimen to be viewed from multiple angles during the experiment. Using the previously mentioned optical measurement and geometry reconstruction technique, it was then possible to gain valuable, previously unobtainable, data on the deformation history of Taylor impact specimens in-situ, such as the major/minor axes of the anisotropically deforming elliptical specimen cross- sections as a function of time and axial position, true strain as a function of time and axial position, and the true strain rate as a function of axial position. The technique was verified by testing a specimen cut from the in-plane material orientation of a clock-rolled high purity Zirconium plate. The output measurements from a post-deformation image frame were compared with measurements of the recovered specimen made using a coordinate measurement machine (CMM), with analysis showing excellent agreement between the two techniques. The experiment was then carried out on specimens cut from the two orthogonal in-plane material orientations of one of the four Ti-6AI-4V plates. Analysis of the data from these experiments gave significant insight into the plastic deformation behaviour of macroscopically textured Ti-6AI-4V under complex impact loading. Recovered Ti-6AI-4V specimens from the outlined Taylor impact experiments were then sectioned along specific planes and microstructurally characterised using EBSD, with comparisons made between the pre and post-deformation microstructures. From this analysis, and the previously discussed geometry reconstruction technique, insight was gained into the effects of micro-texture on the general anisotropic plastic deformation behaviour of Ti- 6AI- 4V plate materials and in particular the role of micro-texture on the formation of deformation twins. Finally, the understanding gained from these experiments, and a detailed review of the literature, was used to inform a novel, physically based material modelling framework, capable of capturing the effects of microstructure and texture on the strain rate and temperature dependent plastic deformation behaviour of Ti-6AI-4V. The model was implemented in the computational software package, MATLAB, and verified by comparison with the mechanical characterisation results from one of the Ti-6AI-4V plates. A number of frameworks are discussed for implementing the new Ti-6AI-4V model within finite element (FE) analysis software packages, such as ABAQUS, LS-DYNA and DEFORM. It is hoped that the new Ti-6AI-4V model can be used to optimise the design of Ti-6AI-4V components and structures for impact loading scenarios.