Effect of post-rolling after ECAP on deformation behavior of ECAPed commercial Al–Mg alloy at 723K

2005 ◽  
Vol 393 (1-2) ◽  
pp. 118-124 ◽  
Author(s):  
Kyung-Tae Park ◽  
Hang-Jae Lee ◽  
Chong Soo Lee ◽  
Dong Hyuk Shin
Keyword(s):  
Deformation Behavior ◽  
Mg Alloy

Investigations on Microstructure Evolution and Deformation Behavior of Aged and Ultrafine Grained Al-Zn-Mg Alloy Subjected to Severe Plastic Deformation

2010 ◽  
Vol 667-669 ◽  
pp. 253-258
Author(s):  
Wei Ping Hu ◽  
Si Yuan Zhang ◽  
Xiao Yu He ◽  
Zhen Yang Liu ◽  
Rolf Berghammer ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Plastic Deformation ◽  
Grain Size ◽  
Severe Plastic Deformation ◽  
Microstructure Evolution ◽  
Deformation Behavior ◽  
Deformation Mechanisms ◽  
Mg Alloy ◽  
Ultrafine Grained

An aged Al-5Zn-1.6Mg alloy with fine η' precipitates was grain refined to ~100 nm grain size by severe plastic deformation (SPD). Microstructure evolution during SPD and mechanical behaviour after SPD of the alloy were characterized by electron microscopy and tensile, compression as well as nanoindentation tests. The influence of η' precipitates on microstructure and mechanical properties of ultrafine grained Al-Zn-Mg alloy is discussed with respect to their effect on dislocation configurations and deformation mechanisms during processing of the alloy.

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.

Modeling the deformation behavior of a rolled Mg alloy with the EVPSC-TDT model

2017 ◽  
Vol 682 ◽  
pp. 332-340 ◽  
Author(s):  
Chao Ma ◽  
Adrien Chapuis ◽  
XiaoQian Guo ◽  
LingYu Zhao ◽  
PeiDong Wu ◽  
...  
Keyword(s):  
Deformation Behavior ◽  
Mg Alloy

Deformation behavior and microstructural evolution during the semi-solid compression of Al–4Cu–Mg alloy

2005 ◽  
Vol 54 (4-5) ◽  
pp. 423-430 ◽  
Author(s):  
Yalin Lu ◽  
Miaoquan Li ◽  
Weichao Huang ◽  
Haitao Jiang
Keyword(s):  
Microstructural Evolution ◽  
Deformation Behavior ◽  
Mg Alloy ◽  
Semi Solid

Effects of Trace Ce Addition on Hot Deformation Behavior of Cu-0.8 Mg Alloy

2020 ◽  
Vol 29 (2) ◽  
pp. 776-786
Author(s):  
Guoqiang Sun ◽  
Yong Liu ◽  
Baohong Tian ◽  
Yi Zhang ◽  
Zhengbin Gu ◽  
...  
Keyword(s):  
Hot Deformation ◽  
Deformation Behavior ◽  
Mg Alloy ◽  
Hot Deformation Behavior

scholarly journals Hot Deformation Behavior and Microstructural Evolution of Twin-Roll-Casting Mg Alloy during High-Temperature Compression

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Qingshan Yang ◽  
Jiahong Dai ◽  
Sensen Chai ◽  
Daliang Yu ◽  
Bin Jiang ◽  
...  
Keyword(s):  
Grain Size ◽  
Flow Stress ◽  
Microstructural Evolution ◽  
Deformation Behavior ◽  
Volume Fraction ◽  
Mg Alloy ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Average Grain Size ◽  
Twin Roll

The deformation behavior and microstructural evolution of twin-roll-casting AZ31 Mg alloy sheets were investigated via hot compression tests at 0°, 5°, and 10° from the normal direction. Compression strains of 5%, 15%, 25%, and 35% were employed at high temperatures of 450°C and 500°C. The flow stress as well as the difference in the flow stress associated with different sampling directions decreased when the temperature was increased. Furthermore, the volume fraction of dynamically recrystallized grains increased with increasing deformation, whereas the average grain size decreased. The DRX grain size and the volume fraction of dynamically recrystallized grains increased with increasing deformation temperature. During ultrahigh temperature compression, the effect of sampling direction on the compression microstructure is relatively small.

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