Download or read book Low Cycle Fatigue of Ultra fine Grained Aluminum Alloy 5083 written by Jennifer Lynn Walley and published by . This book was released on 2008 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low Cycle Fatigue of an Ultra fine Grained 5083 Aluminum Alloy Composite Produced by Cryomilling written by Albert Contreras and published by . This book was released on 2010 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Grain Boundary Sliding in Ultra fine Grained 5083 Aluminium Alloy written by Ming-Je Sung and published by . This book was released on 2013 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantitative measurement and analysis of grain boundary sliding in Ultra-fine grained 5083 Aluminium by AFM was conducted at 623K. The grain size of as received cryomilled Ultra-fine Grained Aluminium was characterized by AFM and TEM, and the average was founded to be about 300nm. Ion beam polishing / etching technology was used to reveal grain boundaries for AFM characterization. The vertical offset of grain boundary sliding was measured by comparing pre-defoemation and post-deformation AFM images. By analyzing these measurements, the contribution of grain boundary sliding to the total strain was estimated as 22% - 52% at a strain rate of 10-4 /sec -5x10-2/sec. It was demonstrated that the relatively low value of the contribution of grain boundary sliding to the total strain is most likely the result of testing under experimental condition that favor the dominance of region I ( low stress) of the sigmoidal behavior characterizing high strain rate superplasticity, which was previously reported.
Download or read book Dynamic Behavior of Soft and Hard Materials Volume 2 written by R. Velmurugan and published by Springer Nature. This book was released on with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low Cycle Fatigue of Some Aluminum Alloys written by YS. Chung and published by . This book was released on 1988 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Axial strain-controlled tests were performed on five aluminum alloys to provide information on their cyclic behavior. The alloys chosen for this investigation represent a complete survey of the strengthening mechanisms associated with commercial aluminum products. The strengthening microstructures ranged from subgrain and dislocation strengthening in the 1200 alloy, solid solution strengthening by magnesium in the 5083, and the high density of GP zones and finely dispersed precipitates in the case of the 7005, 6351, and 6061 alloys. The five alloys were plant-fabricated with commercial tempers.
Download or read book Plasticity and Damage in Bimodal Grain Size Al 5083 written by Steven Nelson and published by . This book was released on 2010 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bimodal and nanocrystalline aluminum alloys are being investigated as stronger replacements for conventional polycrystalline aluminum alloys. Higher strengths are achieved by reducing the grain size of a metal; however, as the grain size is reduced the ductility diminishes. One solution that limits this decrease in ductility is the addition of a few microcrystalline grains into a nanocrystalline alloy, creating a bimodal microstructure that offers a better balance of strength and ductility. Two- and three-dimensional microstructural finite element (FE) simulations of monotonic and fatigue failures in Al-5083 having bimodal grain structures are conducted. To reduce the computational time and facilitate the modeling of microstructural features, a global-local model is developed. Macroscopic linear elastic and nonlinear plastic properties for each of the bimodal compositions are first used to simulate the tensile and fatigue tests in a global FE model. Subsequently, a local model that represents a single element at the center of the global model is built with distinct coarse grains (CGs) distributed throughout an ultra-fine grain (UFG) matrix. Ten percent of the elements in this model are defined as CGs, after which nanocrystalline and polycrystalline properties are assigned to the UFG and CG regions, respectively. Available fatigue test data is utilized to generate a low cycle fatigue damage model for bimodal grains size Al-5083 and obtain the damage model constants for varied levels of coarse grains. This fatigue damage model is then used in conjunction with a finite element continuum damage modeling approach, namely, successive initiation, to predict the damage and crack initiation sites and propagation paths in bimodal grains size alloys. The successive initiation method is used to continually accumulate damage in elements and initiate and propagate the crack through grains that reach the failure criteria defined for monotonic and cyclic loading. It is observed from the monotonic FE model that cracks initiate on the boundaries between CGs and UFGs then propagate through the UFG matrix around the CG until they become large enough to extend into the CGs themselves. In the cyclic FE models, the crack is observed to initiate in a CG and propagate along the CG and the surrounding UFG matrix.
Download or read book Fatigue of Materials written by Raghavan Srinivasan and published by John Wiley & Sons. This book was released on 2010-11-11 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue of Materials covers a broad spectrum of topics that represent the truly diverse nature of the subject that has grown to become a key area of scientific and applied research. Constituting an international forum for the materials industry, the book provides the perspectives of operators, engineers, and researchers regarding all aspects of current and emerging technologies for materials.
Download or read book Materials Processing Fundamentals 2019 written by Guillaume Lambotte and published by Springer. This book was released on 2019-02-09 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book includes contributions from the Materials Processing Fundamentals Symposium held at the TMS 2019 Annual Meeting & Exhibition in San Antonio, Texas. This volume includes contributions on the physical and numerical modeling of materials processing, and covers a range of metals and minerals. Authors present models and results related the basics of processing such as extraction, joining, separation, and casting. The corresponding fundamentals of mass and heat transport as well as physical and thermodynamics properties are addressed, allowing for a cross-disciplinary vision of the field.
Download or read book Low Cycle Fatigue Analysis of Aluminium Alloy 5083 and Filler 5036 written by Trevor D. Berrill and published by . This book was released on 1973 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Plastic Forming of Metals written by Myoung-Gyu Lee and published by MDPI. This book was released on 2018-10-18 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Advances in Plastic Forming of Metals" that was published in Metals
Download or read book Low Cycle Fatigue of Aluminum Alloys written by R. F. Brodrick and published by . This book was released on with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Data Sheets on Low cycle Fatigue Properties of A5083P O A1 4 5Mg 0 6Mn Aluminium Alloy Plates written by and published by . This book was released on 1989 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1985 with total page 1346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low Cycle Fatigue of Al Mg Si Alloys written by K. Detert and published by . This book was released on 1988 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The low cycle fatigue behavior of several age-hardened aluminum alloys with 1% Mg and 1% Si as alloying elements and varying Mn additions of up to 1% was studied. The alloy with the smallest grain size showed the highest strength as well as the highest low cycle fatigue strength. The number of cycles to failure represented by its dependency on strain range did not show any significant differences. However, one could derive from these results that one should try to reduce the number and size of inclusion particles in order to improve fatigue properties. In such a case one can expect that a small grain size of 20 ?m diameter, Mn additions of 0.2 to 0.5%, and a polished surface with a roughness below 0.5 ?m would be beneficial for low cycle fatigue properties.
Download or read book Dislocation Dynamics During Plastic Deformation written by Ulrich Messerschmidt and published by Springer Science & Business Media. This book was released on 2010-04-19 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: Along with numerous illustrative examples, this text provides an overview of the dynamic behavior of dislocations and its relation to plastic deformation. It introduces the general properties of dislocations and treats the dislocation dynamics in some detail.
Download or read book Quantitative Measurement and Analysis of Grain Boundary Sliding in Ultrafine grained 5083 Aluminum by Atomic Force Microscopy written by Jung Hun Han and published by . This book was released on 2010 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the present study, quantitative measurement and analysis for grain boundary sliding (GBS) in ultrafine-grained (UFG) 5083 Al using atomic force microscopy (AFM) has been conducted. As-received cryomilled UFG 5083 Al was characterized by transmission electron microscopy (TEM), and scanning electron microscopy (SEM) . As a result of the examination, the average grain size was determined as ~ 300 nm. Ion beam polishing & etching technique was used to reveal grain boundaries in the alloy for AFM characterization. A comparison between the average grain size of annealed samples measured by TEM and that obtained by AFM showed that the average grain size of the latter technique agrees well with that of the former technique. The vertical offset of GBS was measured by comparing pre-deformation and post-deformation AFM images. As a result, the contribution of GBS to the total tensile strain in 5083 Al was estimated as 22% at a strain rate of 10-4 s-1 and a temperature of 473 K. The relatively low value of the contribution of GBS to the total strain is most likely the result of testing the material under experimental conditions that favor the dominance of region I (low-stress region) of the sigmoidal behavior characterizing superplasticity.
Download or read book Mechanical Properties of Fine Grain 5083 Aluminum Alloy written by Soheil Alexander Eshraghi and published by . This book was released on 2005 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
