The Role of Thermal Cycling on Twinning in Metastable Beta-Ti Alloy

2021 ◽  
Author(s):  
Bin Sun ◽  
Kuishan Sun ◽  
Xianglong Meng ◽  
Jun Wang
Keyword(s):  
Thermal Cycling ◽  
Ti Alloy ◽  
Metastable Beta ◽  
Beta Ti Alloy

scholarly journals Effects of ω Phase Formation on Decomposition of α″⁄β Duplex Phase Structure in a Metastable β Ti Alloy

1998 ◽  
Vol 39 (1) ◽  
pp. 40-48 ◽  
Author(s):  
Yasuya Ohmori ◽  
Hiroshi Natsui ◽  
Kiyomichi Nakai ◽  
Hiroyuki Ohtsubo
Keyword(s):  
Phase Formation ◽  
Phase Structure ◽  
Ti Alloy ◽  
Omega Phase ◽  
Metastable Beta ◽  
Beta Ti Alloy

Grain refinement in a metastable beta Ti alloy deformed to large strains at high strain rates

2018 ◽  
Vol 157 ◽  
pp. 174-185 ◽  
Author(s):  
A. Zafari ◽  
K. Xia
Keyword(s):  
Grain Refinement ◽  
High Strain ◽  
Large Strains ◽  
Strain Rates ◽  
Ti Alloy ◽  
High Strain Rates ◽  
Metastable Beta ◽  
Beta Ti Alloy

scholarly journals Crystallographic Analysis of α Phase Formation in a Metastable β Ti Alloy

1998 ◽  
Vol 39 (1) ◽  
pp. 49-56 ◽  
Author(s):  
Yasuya Ohmori ◽  
Hiroshi Natsui ◽  
Kiyomichi Nakai
Keyword(s):  
Phase Formation ◽  
Alpha Phase ◽  
Crystallographic Analysis ◽  
Ti Alloy ◽  
Metastable Beta ◽  
Beta Ti Alloy

scholarly journals A low-cost metastable beta Ti alloy with high elastic admissible strain and enhanced ductility for orthopaedic application

2020 ◽  
Vol 835 ◽  
pp. 155391 ◽  
Author(s):  
Yidong Xu ◽  
Junheng Gao ◽  
Yuhe Huang ◽  
W. Mark Rainforth
Keyword(s):  
Low Cost ◽  
Ti Alloy ◽  
Metastable Beta ◽  
Beta Ti Alloy

scholarly journals Graded elastic modulus orthopedic implants made of graded metastable beta ti alloy

2016 ◽  
Vol 4 ◽  
Author(s):  
Lopes Eder ◽  
Cremasco Alessandra ◽  
Caram Rubens
Keyword(s):  
Elastic Modulus ◽  
Orthopedic Implants ◽  
Ti Alloy ◽  
Metastable Beta ◽  
Beta Ti Alloy

scholarly journals Microstructural evolution in a superelastic metastable beta-Ti alloy

2017 ◽  
Vol 128 ◽  
pp. 87-90 ◽  
Author(s):  
James Coakley ◽  
Dieter Isheim ◽  
Anna Radecka ◽  
David Dye ◽  
Howard J. Stone ◽  
...  
Keyword(s):  
Microstructural Evolution ◽  
Ti Alloy ◽  
Metastable Beta ◽  
Beta Ti Alloy

scholarly journals Effect of Supra-Transus Deformation Conditions on Recrystallization of Beta Ti Alloy

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1278
Author(s):  
Chao Voon Samuel Lim ◽  
Yang Liu ◽  
Chen Ding ◽  
Aijun Huang
Keyword(s):  
Hot Deformation ◽  
Static Recrystallization ◽  
Dynamic Recovery ◽  
Texture Evolution ◽  
High Strength ◽  
Ex Situ ◽  
Mechanical Processing ◽  
Ti Alloy ◽  
Electron Backscattered Diffraction ◽  
Beta Ti Alloy

There is increasing usage of high strength Beta Ti alloy in aerospace components. However, one of the major challenges is to obtain homogeneous refined microstructures via the thermo-mechanical processing. To overcome this issue, an understanding of the hot deformation conditions effect on the microstructure, prior to and after annealing, is needed. In this work, the effect of strain levels, which is more precise than percentage of reduction, and strain rate under supra-transus deformation temperature on beta annealing are studied using a double cone sample. The Electron Backscattered Diffraction (EBSD) is used to determine the deformed microstructure and texture evolution, as well as the static recrystallized grains evolution using the ex situ annealing approach. This work provides evidence that the mechanisms of dynamic recovery and recrystallization, along with texture evolution, are affected by the deformation conditions, which in turn affected the subsequent static recrystallization during annealing. It will also be shown that high levels of strain do not necessarily lead to an increase in the rate of recrystallization. Finally, the results obtained provided several examples of guidance in designing the TMP processes for obtaining not only a refine microstructure, but a more homogeneous beta microstructure during the beta processing of Beta Ti alloy.

scholarly journals Irreversible Thermal Expansion of Replicated Aluminium Foam

2018 ◽  
Vol 24 (2) ◽  
pp. 156
Author(s):  
Arkady Finkelstein ◽  
Dmitry Husnullin
Keyword(s):  
Thermal Expansion ◽  
Oxide Film ◽  
Thermal Cycling ◽  
Metal Foam ◽  
Porous Metal ◽  
Extraction Process ◽  
Aluminium Foam ◽  
Expansion Process ◽  
Porous Part

There was found irreversible thermal expansion of large items made of the replicated aluminium foam during the extraction of soluble filler from Al-NaCl composite. Sources of the phenomena were investigated. The expansion is discovered to be caused by incomplete contraction of the porous metal due to oxidation of its internal porous surface during thermal cycling with air and water presence. Significant role of oxide film defects in the expansion process was exposed. There was gained information on dependencies of the irreversible thermal expansion on temperature of the extraction process and metal foam pore size. Measurements of the expansion dynamics showed its finite character. It was also noted that the expansion is limited by the thermal expansion coefficient of used alloy. Finally correction coefficients were obtained that, being applied to nominal sizes of a porous part, compensates the expansion.

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