Download or read book Micromechanics of Transformation Superplasticity in Ti 6Al 4V TiBw Composites written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Transformation superplasticity is a deformation mechanism induced by thermally-cycling a polymorphic material through the phase transformation range while simultaneously applying an external biasing stress. Unlike microstructural superplasticity, which requires a fine, equiaxed grain structure, this mechanism can be applied to coarse-grained alloys and composites. In this article, we review our research on transformation superplasticity of Ti-6Al-4V/TiB-whisker reinforced composites, during thermal cycling through the titanium [alpha]/[beta] transformation range. The composites exhibit Newtonian flow and superplastic extension under these conditions. We describe the constitutive behavior of composites containing 0, 5 and 10 vol% reinforcing whiskers, and consider the effects of load transfer from matrix to whisker on superplastic deformation using existing rheological models. Additionally, strain hardening due to gradual whisker alignment is observed, and rationalized in terms of increased load transfer for aligned whiskers.

Download or read book Biaxial Deformation of the Titanium Alloy Ti 6Al 4V by Transformation Superplasticity written by Shinya Myojin and published by . This book was released on 1995 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book First and Second International Symposia on Superplasticity and Superplastic Forming Technology written by David C. Dunand and published by ASM International(OH). This book was released on 2003 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers from a November 2001 and an October 2002 symposium examine academic and commercial aspects of recent research in the field. They address a range of metals and alloys as well as novel materials such as composites, sandwiches, and foamed metals. They also deal with innovative topics such as hig

Download or read book Biaxial Transformation Superplasticity of Titanium Alloys and Composites written by Megan Frary and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanisms and Mechanics of Transformation mismatch Plasticity in Titanium Alloys and Composites written by Christopher Schuh and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Transformation-mismatch plasticity is a deformation mechanism that occurs in polymorphic materials when a small external stress is imposed during their phase transformation. Internal mismatch, due to the density difference between polymorphs, is accommodated plastically in the weaker phase, and the accommodation strains are biased to occur in the direction of the external stress. This leads to average Newtonian flow, which can be accumulated after multiple transformations to achieve superplastic strains (i.e., transformation superplasticity).

Download or read book Transformation Superplasticity of Intermetallic and Ceramic Matrix Composites written by and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transformation superplasticity - defined as the capability of allotropic materials to deform rapidly and without fracture upon thermal cycling between their two phases - has been studied in a series of monolithic and composite materials systems: metals (Fe, Ti and Zr), metal matrix composites (Ti6Al4V-TiC, Ti6Al4V-TiB and Fe-TiC), intermetallic matrix composites (NiAl-ZrO2), ceramics (Bi2O3) and ceramic matrix composites (zirconia-based system). Often, samples were fabricated in house by powder processes and in all cases their microstructure was characterized before and after deformation. Tensile experiments demonstrated that samples deform more rapidly and to higher fracture strains when thermally cycled around their phase transformation than when held at a constant equivalent temperature. Furthermore, theoretical modeling was performed using both analytical closed- form solution methods and finite-element numerical methods, and good agreement with experimental data was obtained. Major transformation superplasticity milestones include: first complete study of zirconium, first demonstration in intermetallic systems (titanium aluminide and nickel aluminide), first demonstration in ceramic systems (bismuth oxide and zirconia), first numerical model (finite-element), new continuum model (at high stresses), first demonstration of whisker alignment (in Ti-6Al4V/TiB), first use of hydrogen (in Ti). Also, our collaboration with industry has resulted in a completed Phase I SBIR project as well as a subsequent Phase II project initiated in 2000 with NSF sponsorship, an important step towards commercialization of transformation superplasticity.

Download or read book Superplasticity of Ti 6Al 4V and Iron modified Ti 6Al 4V written by Michael Lloyd Meier and published by . This book was released on 1991 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transformation superplasticity of Metals and Metal Matrix Composites written by Peter Zwigl and published by . This book was released on 1998 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Superplastic Deformation of Titanium Alloy Ti 6al 4v written by Adi Arieli and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microstructural Evolution of Commercial Purity Ti and Superplasticity of Ti 6Al 4V Alloy Processed by Equal Channel Angular Extrusion written by and published by . This book was released on 2006 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project focused on deformation processing, microstructural development, and mechanical properties of Ti and Ti-6Al-4V alloys. Specific tasks included: (1) Study superplastic deformation of a Ti-6Al-4V alloy that have been processed by equal channel angular extrusion and relate the deformation mechanism to the enhancement of superplasticity, and (2) Examine the effect of strain path for Ti fabricated by equal channel angular extrusion and uniaxial compression, with a special focus on the improved mechanical properties of the deformed Ti. As a part of the report, two papers were published in Materials Science and Engineering A (vol. A410-411, 2005, 156-159) and Metallurgical and Materials Transactions A (vol.37, 2006, 381-391). The work was begun under AOARD 034023, "Microstructure development of ultrafine grained Ti and superplasticity of Ti-6Al-4V alloy." Most of that effort was devoted to Ti-6Al-4V alloy. Much progress has been made over the more than two years of effort. We propose to complete our studies by studying, in detail, deformation mechanisms for the enhanced superplasticity in the ultrafine grained Ti-6Al-4V alloy with a special focus on the role of non-equilibrium grain boundaries.

Download or read book Titanium and Titanium Alloys written by Christoph Leyens and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1997 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Metal and Ceramic Matrix Composites written by Brian Cantor and published by CRC Press. This book was released on 2003-11-01 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions from leading experts in their respective fields, Metal and Ceramic Matrix Composites provides a comprehensive overview of topics on specific materials and trends. It is a subject regularly included as a final year option in materials science courses and is also of much industrial and academic interest. The book begins wit

Download or read book Metals Abstracts written by and published by . This book was released on 1998 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physics Briefs written by and published by . This book was released on 1992 with total page 1358 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanics written by and published by . This book was released on 2001 with total page 422 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 964 pages. Available in PDF, EPUB and Kindle. Book excerpt: