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Author: Amit Kishan Behera Publisher: LAP Lambert Academic Publishing ISBN: 9783659609671 Category : Languages : en Pages : 96
Book Description
The present work focuses on a study of different mechanisms to engineer homogeneously distributed fine sized alpha precipitates in the beta matrix of beta titanium alloys. The precipitation of metastable phases (such as omega phase) upon low temperature aging and their influence on alpha precipitation is studied in detail. The precipitation sequence on direct aging above the omega solvus temperature is also assessed. The structural and compositional evolution of precipitate phase is determined using multiple characterization tools (3DAP, TEM, SEM, Synchrotron XRD). The possibility of occurrence of other non-classical precipitation mechanisms that do not require heterogeneous nucleation sites are also analyzed. Lastly, the influence of interstitial element, oxygen on alpha precipitation during the oxidation of Beta 21S has been determined. The ingress of oxygen and its influence on microstructure have also been correlated to measured mechanical properties.
Author: Amit Kishan Behera Publisher: LAP Lambert Academic Publishing ISBN: 9783659609671 Category : Languages : en Pages : 96
Book Description
The present work focuses on a study of different mechanisms to engineer homogeneously distributed fine sized alpha precipitates in the beta matrix of beta titanium alloys. The precipitation of metastable phases (such as omega phase) upon low temperature aging and their influence on alpha precipitation is studied in detail. The precipitation sequence on direct aging above the omega solvus temperature is also assessed. The structural and compositional evolution of precipitate phase is determined using multiple characterization tools (3DAP, TEM, SEM, Synchrotron XRD). The possibility of occurrence of other non-classical precipitation mechanisms that do not require heterogeneous nucleation sites are also analyzed. Lastly, the influence of interstitial element, oxygen on alpha precipitation during the oxidation of Beta 21S has been determined. The ingress of oxygen and its influence on microstructure have also been correlated to measured mechanical properties.
Author: Yufeng Zheng Publisher: ISBN: Category : Languages : en Pages : 211
Book Description
In summary, refined and super-refined precipitates microstructure in Ti-5553 are studied using both modern characterization techniques and computational simulation. Nucleation mechanisms are proposed to explain all the features of two specific microstructures and critical heat treatment conditions are figured out. Therefore, this insightful study is not only beneficial to understanding the details of phase transformation in the scientific aspect but also complement to selection of heat treatment conditions in industry area.
Author: Maciej Motyka Publisher: BoD – Books on Demand ISBN: 183962552X Category : Technology & Engineering Languages : en Pages : 156
Book Description
Titanium alloys, due to unique physical and chemical properties (mainly high relative strength combined with very good corrosion resistance), are considered as an important structural metallic material used in hi-tech industries (e.g. aerospace, space technology). This book provides information on new manufacturing and processing methods of single- and two-phase titanium alloys. The eight chapters of this book are distributed over four sections. The first section (Introduction) indicates the main factors determining application areas of titanium and its alloys. The second section (Manufacturing, two chapters) concerns modern production methods for titanium and its alloys. The third section (Thermomechanical and surface treatment, three chapters) covers problems of thermomechanical processing and surface treatment used for single- and two-phase titanium alloys. The fourth section (Machining, two chapters) describes the recent results of high speed machining of Ti-6Al-4V alloy and the possibility of application of sustainable machining for titanium alloys.
Author: Christoph Leyens Publisher: John Wiley & Sons ISBN: 3527605207 Category : Technology & Engineering Languages : de Pages : 532
Book Description
This handbook is an excellent reference for materials scientists and engineers needing to gain more knowledge about these engineering materials. Following introductory chapters on the fundamental materials properties of titanium, readers will find comprehensive descriptions of the development, processing and properties of modern titanium alloys. There then follows detailed discussion of the applications of titanium and its alloys in aerospace, medicine, energy and automotive technology.
Author: Jan Sieniawski Publisher: BoD – Books on Demand ISBN: 9535111108 Category : Technology & Engineering Languages : en Pages : 160
Book Description
The book contains six chapters and covers topics dealing with biomedical applications of titanium alloys, surface treatment, relationships between microstructure and mechanical and technological properties, and the effect of radiation on the structure of the titanium alloys.
Author: Charles Arthur Greene Publisher: ISBN: Category : Titanium alloys Languages : en Pages : 392
Book Description
Systematic studies were undertaken to determine the ambient temperature tensile and creep deformation behavior, including mechanisms, of alpha Ti-Mn, and alpha-beta and beta Ti-Mn and Ti-V alloys. In regard to the a Ti-Mn alloy, it was found that when creep tested at 95% of the 0.2% Yield Stress (YS) the creep strain of the coarse grained (500 microns) material was significantly higher than the fine grained (45 microns) material. This effect was found to be due to the scientifically interesting phenomenon of time dependent twinning in coarse grained alpha phase. Such a phenomenon has never been reported before. Based on optical and scanning electron microscopic observations of displacements of the grid lines obtained by electron lithography and transmission electron microscopic observations, it was found that there are strong slip/twin, twin/slip and twin/twin interactions during creep deformation. The tensile deformation of beta titanium alloys depended on the alloying elements. In the beta Ti-Mn alloy the tensile deformation mechanisms were found to be coarse and wavy slip whereas in the beta Ti-V alloy the deformation mechanisms were found to be coarse and wavy slip as well as twinning. This difference was attributed to the difference in stability of the beta phase. In contrast to the a Ti-Mn alloy the creep deformation in the beta Ti-Mn alloy was found to be negligibly small at a stress level of 95% YS. With respect to alpha-beta titanium alloys, for similar volume percent and morphology of phases, the tensile and creep deformation mechanisms were also found to depend on the alloying elements. In regard to the alpha-beta Ti-Mn alloy, the deformation mechanisms were found to be predominately fine slip in alpha and beta phases and occasional interface sliding.
Author: F.J. Humphreys Publisher: Elsevier ISBN: 008098388X Category : Technology & Engineering Languages : en Pages : 520
Book Description
The annealing of deformed materials is of both technological importance and scientific interest. The phenomena have been most widely studied in metals, although they occur in all crystalline materials such as the natural deformation of rocks and the processing of technical ceramics. Research is mainly driven by the requirements of industry, and where appropriate, the book discusses the extent to which we are able to formulate quantitative, physically-based models which can be applied to metal-forming processes. The subjects treated in this book are all active research areas, and form a major part of at least four regular international conference series. However, there have only been two monographs published in recent times on the subject of recrystallization, the latest nearly 20 years ago. Since that time, considerable advances have been made, both in our understanding of the subject and in the techniques available to the researcher. The book covers recovery, recrystallization and grain growth in depth including specific chapters on ordered materials, two-phase alloys, annealing textures and annealing during and after hot working. Also contained are treatments of the deformed state and the structure and mobility of grain boundaries, technologically important examples and a chapter on computer simulation and modelling. The book provides a scientific treatment of the subject for researchers or students in Materials Science, Metallurgy and related disciplines, who require a more detailed coverage than is found in textbooks on physical metallurgy, and a more coherent treatment than will be found in the many conference proceedings and review articles.
Author: Amit Kishan Behera
Author: Amit Kishan Behera
Author: Amit Kishan Behera
Author: Yufeng Zheng
Author: Maciej Motyka
Author: Christoph Leyens
Author: Jan Sieniawski
Author: Vasisht Venkatesh
Author: Charles Arthur Greene
Author: F.J. Humphreys
Author: J. D. Jackson