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Materials Science and Engineering of Powder Metallurgy  2021, Vol. 26 Issue (4): 372-380    DOI:
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Hot deformation behavior and processing map of Al-Cu-Mg-Mn-Sc-Zr aluminium alloy
ZHOU Xu, LIU Zuming, HUANG Lanping, AI Yongkang, CAO Bin, YE Shupeng
State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
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Abstract  The hot deformation behavior of Al-Cu-Mg-Mn-Sc-Zr aluminium alloy is a basis for formulating deformation processing technology. The isothermal compression simulation experiment was carried out on the homogenized Al-Cu-Mg-Mn-Sc-Zr aluminium alloy by Gleeble-3500 system under temperature of 633-753 K and strain rate of 0.01-10 s-1, the true strain-true stress curves were obtained, and deformation activation energy was calculated, and processing map was built-up. The results show that flow stress decreases and the softening mechanism changes from dynamic recovery to dynamic recrystallization with the increase of deformation temperature or the decrease of strain rate. The precipitates in the deformed alloy pin dislocation slip and grain boundary migration, and hinder recrystallization. The activation energy is 153.5 kJ/mol. 633-663 K, 0.01-0.07 s-1 and 693-723 K, 0.01-0.1 s-1 are the best deformation regions.
Key wordsAl-Cu-Mg-Mn-Sc-Zr aluminium alloy      flow stress      constitutive equation      activation energy      processing map     
Received: 19 March 2021      Published: 26 September 2021
ZTFLH:  TG146.2  
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ZHOU Xu
LIU Zuming
HUANG Lanping
AI Yongkang
CAO Bin
YE Shupeng
Cite this article:   
ZHOU Xu,LIU Zuming,HUANG Lanping, et al. Hot deformation behavior and processing map of Al-Cu-Mg-Mn-Sc-Zr aluminium alloy[J]. Materials Science and Engineering of Powder Metallurgy, 2021, 26(4): 372-380.
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