Download or read book Deformation Mechanisms in Iron base Hard Facing Alloys written by Benjamin Oliver Poole and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Deformation Mechanisms of Hard to Machine Metal Alloys at the Microscale written by Kai Nowag and published by . This book was released on 2013-06-10 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Deformation Mechanisms of Advanced Structural Alloys written by 李亦庄 and published by . This book was released on 2018 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Power Reactor Instrumentation Systems Handbook written by Joseph M. Harrer and published by . This book was released on 1973 with total page 1052 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Structure and Deformation of Some Iron base Alloys Containing Intermetallic Precipitates written by D. H. Jack and published by . This book was released on 1969 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wear of Materials written by Peter J. Blau and published by Elsevier. This book was released on 2003-10 with total page 1540 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 14th International Conference on Wear of Materials took place in Washington, DC, USA, 30 March - 3 April 2003. These proceedings contain over two-hundred peer reviewed papers containing the best research, technical developments and engineering case studies from around the world. Biomaterials and nano-tribology receive special attention in this collection reflecting the general trends in the field. Further highlights include a focus on the new generation of instrumentation to probe wear at increasingly small scales. Approximately ninety communications and case studies, a popular format for the academic community have also been included, enabling the inclusion of the most up-to-date research. Over 200 peer-reviewed papers including hot topics such as biomaterials and nano-tribology Keeping you up-to-date with the latest research from leading experts Includes communications and case studies
Download or read book Deformation Mechanisms in Rapidly Solidified Aluminum Alloys written by Daira Legzdina and published by . This book was released on 1989 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: The deformation mechanisms of four rapidly solidified (RS) and hot extruded aluminum alloys were investigated. Al-8.8Fe-3.7Ce (all compositions in wt%) and Al-8.9Fe-6.9Ce alloys produced from RS powders and two Al-8Fe-2Mo alloys one produced from RS ribbons and the other from powders, respectively, were creep tested in the temperature range 250$spcirc$C to 350$spcirc$C over a range of stresses from 15 to 250 MPa. The Al-8.8Fe-3.7Ce alloy exhibited a diffusional creep region at low stresses and a power law creep region as the stress increased beyond a given transition stress. Coble creep was the deformation mechanism in the diffusional creep region and the strain rates were determined by the size of the RS particulate. In the power law region the creep rates could be predicted by the Sherby and Lin equation. To investigate the influence of the thermal degradation on the creep behavior of the Al-Fe-Ce alloys both alloys were heat-treated for 165 hours at 450$spcirc$C, 500$spcirc$C and 550$spcirc$C, respectively, and creep tested at 300$spcirc$C. Both a diffusional and a power law region was observed for both alloys and all heat-treatment temperatures. An increase in the diffusional creep rates was observed for the heat-treated alloys instead of the expected decrease, confirming that the grain size of the material does not determine the creep rates in the diffusional creep region. The Al-8Fe-2Mo ribbon extrusion exhibited a diffusional region at low stresses and a power law region at higher stresses. In the diffusional regime the strain rates were determined by the size of the RS particulate. When the data in the power law regime was plotted as normalized stress versus normalized strain, the Al-8Fe-2Mo data did not exhibit a single slope. The diffusional creep region was totally suppressed in the Al-8Fe-2Mo powder alloy, an observation that is in contrast with the behavior of all other alloys tested in this work. (Abstract shortened with permission of author.)
Download or read book Advances in Materials Technology for Fossil Power Plants written by D. Gandy and J. Shingledecker and published by ASM International. This book was released on 2014-01-01 with total page 1520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conference proceedings covering the latest technology developments for fossil fuel power plants, including nickel-based alloys for advanced ultrasupercritical power plants, materials for turbines, oxidation and corrosion, welding and weld performance, new alloys concepts, and creep and general topics.
Download or read book Publications of the National Institute of Standards and Technology Catalog written by National Institute of Standards and Technology (U.S.) and published by . This book was released on 1990 with total page 424 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 1987 with total page 1124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Wrought Magnesium Alloys written by Colleen Bettles and published by Elsevier. This book was released on 2012-04-25 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: This important book summarises the wealth of recent research on our understanding of process-property relationships in wrought magnesium alloys and the way this understanding can be used to develop a new generation of alloys for high-performance applications.After an introductory overview of current developments in wrought magnesium alloys, part one reviews fundamental aspects of deformation behaviour. These chapters are the building blocks for the optimisation of processing steps covered in part two, which discusses casting, extrusion, rolling and forging technologies. The concluding chapters cover applications of wrought magnesium alloys in automotive and biomedical engineering.With its distinguished editors, and drawing on the work of leading experts in the field, Advances in wrought magnesium alloys is a standard reference for those researching, manufacturing and using these alloys. - Summarises recent research on our understanding of process-property relationships in wrought magnesium alloys - Discusses the way this understanding can be used to develop a new generation of alloys for high-performance applications - Reviews casting, extrusion, rolling and forging technologies, fundamental aspects of deformation behaviour, and applications of wrought magnesium alloys in automotive and biomedical engineering
Download or read book Metals Abstracts written by and published by . This book was released on 1998 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research Reports written by and published by . This book was released on 1961 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atomic scale Investigation of Deformation Mechanisms in Concentrated Alloys written by Mulaine Shih and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical behavior of crystalline materials is determined by crystal defects such as dislocations. Understanding the response of defects to forces is thus crucial to improve mechanical properties and to better design and engineer advanced structural materials. Motivated by metastable high entropy alloys (HEAs), we first study the dislocation behavior in a class of metastable fcc alloys. Transitioning from fcc to hcp stable phases in these alloys corresponds to a change from positive to negative average stacking fault energy (SFE). We perform Molecular Dynamics (MD) simulations, and use random NiCo alloys as the model metastable fcc alloy system. We show that the splitting distance between Shockley partial dislocations can remain finite even in a negative average SFE alloy, at finite temperatures. By investigating the effect of average versus “local” SFE on the dislocation stability, and examining the decorrelation force to break the two partial dislocations from equilibrium in these alloys, we are able to piece the puzzle together. We show that in concentrated alloys, the major resisting force is caused by the interaction of dislocations with local solute environments acting on partial dislocations. Next, we present our effort to predict the stress state of atomic-scale defects in experimental observations, captured by high resolution transmission electron microscopy (TEM) images. We propose a new method utilizing the continuum J-integral concept to compute the forces at atomic-scale. The new method is applied to example atomistic simulations of dislocation interactions, and results are validated with its theoretical Peach-Koehler force. Moreover, we investigate the potential origin of preferential deformation at thin deformation twins in CrCoNi alloys under cyclic loading. Assisted from atomistic simulations, we examine the local stress field at the twin boundary with free surfaces. Pure Cu was chosen as our model system for its chemical simplicity and having a similar anisotropy ratio to CrCoNi alloys. We demonstrate the effect of twin size on the strain localization. The high elastic anisotropy induces local stress concentration, which served as a crack initiation site under cyclic loading. We then extend the crack initiation model proposed by Neumann and Tonnessen to discuss the behavior in CrCoNi alloys. In summary, this thesis interrogates the possible deformation mechanisms in concentrated alloys and provides fundamental understanding of the dislocation behavior and offers insight for future alloy developments and applications.
Download or read book Creep and High Temperature Deformation of Metals and Alloys written by Stefano Spigarelli and published by MDPI. This book was released on 2019-12-12 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: By the late 1940s, and since then, the continuous development of dislocation theories have provided the basis for correlating the macroscopic time-dependent deformation of metals and alloys—known as creep—to the time-dependent processes taking place within the metals and alloys. High-temperature deformation and stress relaxation effects have also been explained and modeled on similar bases. The knowledge of high-temperature deformation as well as its modeling in conventional or unconventional situations is becoming clearer year by year, with new contemporary and better performing high-temperature materials being constantly produced and investigated. This book includes recent contributions covering relevant topics and materials in the field in an innovative way. In the first section, contributions are related to the general description of creep deformation, damage, and ductility, while in the second section, innovative testing techniques of creep deformation are presented. The third section deals with creep in the presence of complex loading/temperature changes and environmental effects, while the last section focuses on material microstructure–creep correlations for specific material classes. The quality and potential of specific materials and microstructures, testing conditions, and modeling as addressed by specific contributions will surely inspire scientists and technicians in their own innovative approaches and studies on creep and high-temperature deformation.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993-10 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:
