High temperature deformation behavior and processing map of hot isostatically pressed Ti-47. 5Al-2Cr-2Nb-0. 2W-0. 2B alloy using gas atomization powders

2017 ◽  
Vol 24 (4) ◽  
pp. 435-441 ◽  
Author(s):  
Ying Bao ◽  
Dong-ye Yang ◽  
Na Liu ◽  
Guo-qing Zhang ◽  
Zhou Li ◽  
...  
Keyword(s):  
High Temperature ◽  
Deformation Behavior ◽  
Processing Map ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Gas Atomization

High Temperature Deformation Behavior of AZ31 Mg Alloy

2005 ◽  
Vol 475-479 ◽  
pp. 2927-2930 ◽  
Author(s):  
B.H. Lee ◽  
Kwang Seon Shin ◽  
Chong Soo Lee
Keyword(s):  
High Temperature ◽  
Deformation Behavior ◽  
Processing Map ◽  
Tensile Elongation ◽  
Mg Alloy ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Deformation Method ◽  
Az31 Mg Alloy ◽  
Average Grain Size

High temperature deformation behavior of AZ31 Mg alloy was investigated in this study on the basis of a processing map (e » 0.6). To construct a processing map, compression tests were carried out at various temperatures and strain rates. Two regions of high deformation efficiency (h) were identified as: (1) a dynamic recrystalization (DRX) domain at 250°C and 1/s and (2) a superplasticity domain at 450°C and 10-4/s. The average grain size observed in the DRX region was considerably smaller (2.9µm) than in any other region. In the superplastic condition, tensile elongation to failure approached to 1040%. At the high Z regions, flow softening occurred resulting from the dynamic recrystallization but below 1010 of Z value, flow hardening occurred due to the grain growth. Possible deformation mechanisms operating at high temperature were discussed in relation to the activation energy. A two-stage deformation method was found to be effective in enhancing the superplasticity of AZ31 Mg alloy.

High temperature deformation behavior and processing map for a nickel-titanium shape memory alloy

2017 ◽  
Vol 23 (5) ◽  
pp. 1002-1011 ◽  
Author(s):  
Xiang-Qian Yin ◽  
Sang-Won Lee ◽  
Yan-Feng Li ◽  
Chan-Hee Park ◽  
Xu-Jun Mi ◽  
...  
Keyword(s):  
High Temperature ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Deformation Behavior ◽  
Processing Map ◽  
Nickel Titanium ◽  
High Temperature Deformation ◽  
Temperature Deformation
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