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Author: Young-Won Kim Publisher: Minerals, Metals, & Materials Society ISBN: Category : Science Languages : en Pages : 668
Book Description
A March 2003 meeting provided a forum for scientists to share information on progress in gamma TiAl alloys. Selected papers from the meeting, 77 in all, are presented here, and cover applications, fundamentals, alloy design and development, processing, joining, microstructure-property evaluation, an
Author: Young-Won Kim Publisher: Minerals, Metals, & Materials Society ISBN: Category : Science Languages : en Pages : 668
Book Description
A March 2003 meeting provided a forum for scientists to share information on progress in gamma TiAl alloys. Selected papers from the meeting, 77 in all, are presented here, and cover applications, fundamentals, alloy design and development, processing, joining, microstructure-property evaluation, an
Author: Fritz Appel Publisher: John Wiley & Sons ISBN: 352731525X Category : Technology & Engineering Languages : en Pages : 763
Book Description
The first book entirely dedicated to the topic emphasizes the relation between basic research and actual processing technologies. As such, it covers complex microstructures down to the nanometer scale, structure/property relationships and potential applications in key industries. From the contents: * Constitution * Thermophysical Constants * Phase Transformations and Microstructures * Deformation Behaviour * Strengthening Mechanisms * Creep * Fracture Behaviour * Fatigue * Oxidation Resistance and Related Issues * Alloy Design * Ingot Production and Component Casting * Powder Metallurgy * Wrought Processing * Joining * Surface Hardening * Applications and Component Assessment
Author: Young-Won Kim Publisher: Minerals, Metals, & Materials Society ISBN: Category : Technology & Engineering Languages : en Pages : 1036
Book Description
This two-volume publication is a comprehensive update of the fundamental and practical issues confronting the research, development and application of gamma titanium aluminides.
Author: Maximilian Holsten Publisher: Apprimus Wissenschaftsverlag ISBN: 3863596951 Category : Technology & Engineering Languages : en Pages : 158
Book Description
In the design of turbomachinery components, a significant effort is carried out regarding the optimization of efficiency. The increase in thermal efficiency particularly involves the introduction of high-performance alloys. Such alloys are for example titanium alloys. Sink electrical discharge machining (sink EDM) is a crucial manufacturing process for components due to its independence of machined material strengths; however, new materials require process design. Hence, research to understand and optimize the machining of titanium alloys is of great benefit to the industry in general. A positive tool polarity is generally adopted in sink EDM to maximize material removal relative to tool wear. Sink EDM of α/β titanium alloys as Ti6Al4V is however atypical in that these materials necessitate a negative tool polarity. Adding to the intrigue are gamma titanium aluminides (γ-TiAl), which machine better under the conventional positive polarity. Established explanatory models of sink EDM fail in resolving the removal behavior – a need for fundamental research is given. This thesis focuses on clarifying the phenomena behind this interesting behavior by investigating removal mechanisms over a range of relevant process conditions. The polarity-effect is demonstrated to arise from the polarity-dependent nature and extent of titanium carbide (TiC) formation on the workpiece surface, which significantly affects material removal mechanisms. An explanatory model, deduced from different experimental and numerical approaches, clarifies the influence of polarity to the formation mechanism of a TiC layer. With regard to monitoring of adverse layer formations, the measurement of acoustic emission (AE) is proven an appropriate concept. A correlation of the AE signal to process forces is even established, which may be crucial to determine the deflection of thin electrodes in EDM. Finally, the knowledge acquired is applied and enhanced in comprehensive process design, that also involves the machining of additively manufactured γ-TiAl. The study reveals the beneficial behavior of the fine microstructure relative to the resulting surface integrity. As a result, this thesis delivers a model-based concept for process design with respect to the adequate choice of tool polarity during machining of titanium alloys.
Author: W Sha Publisher: Elsevier ISBN: 1845695860 Category : Technology & Engineering Languages : en Pages : 588
Book Description
Given their growing importance in the aerospace, automotive, sports and medical sectors, modelling the microstructure and properties of titanium and its alloys is a vital part of research into the development of new applications. This is the first time a book has been dedicated to modelling techniques for titanium.Part one discusses experimental techniques such as microscopy, synchrotron radiation X-ray diffraction and differential scanning calorimetry. Part two reviews physical modelling methods including thermodynamic modelling, the Johnson-Mehl-Avrami method, finite element modelling, the phase-field method, the cellular automata method, crystallographic and fracture behaviour of titanium aluminide and atomistic simulations of interfaces and dislocations relevant to TiAl. Part three covers neural network models and Part four examines surface engineering products. These include surface nitriding: phase composition, microstructure, mechanical properties, morphology and corrosion; nitriding: modelling of hardness profiles and kinetics; and aluminising: fabrication of Ti coatings by mechanical alloying.With its distinguished authors, Titanium alloys: Modelling of microstructure, properties and applications is a standard reference for industry and researchers concerned with titanium modelling, as well as users of titanium, titanium alloys and titanium aluminide in the aerospace, automotive, sports and medical implant sectors. - Comprehensively assesses modelling techniques for titanium, including experimental techniques such as microscopy and differential scanning calorimetry - Reviews physical modelling methods including thermodynamic modelling and finite element modelling - Examines surface engineering products with specific chapters focused on surface nitriding and aluminising
Author: W. A. Riehl Publisher: ISBN: Category : Oxygen Languages : en Pages : 136
Book Description
This study was undertaken to develop information on which a knowledgeable decision could be based concerning the use of titanium for construction of thin walled LOX tanks. The primary goals were to investigate the reactions of titanium alloys with oxygen under a variety of conditions associated with space vehicles, and to determine if the titanium could be treated or coated in some fashion to eliminate such hazards.
Author: Young-Won Kim
Author: Young-Won Kim
Author: Fritz Appel
Author: Young-Won Kim
Author: Maximilian Holsten
Author: Sabine Maria Schlögl
Author: Aliakbar Emdadi
Author: R. A. Wood
Author: International Symposium on Gamma Titanium Aluminides
Author: W Sha
Author: W. A. Riehl