Hot Compression Deformation Behavior of 6013 Aluminum Alloy by Low lnZ

被引：0
|
作者：
Wu Y. [1 ,2 ]
Jiang K. [1 ,3 ]
Liu S. [1 ,2 ,3 ]
Fan S. [4 ]
Qin Q. [1 ,3 ]
Li J. [1 ,3 ]
机构：
[1] School of Materials Science and Engineering, Central South University, Changsha
[2] National Key Laboratory of Science and Technology on High-strength Structural Materials, Central South University, Changsha
[3] Key Laboratory of Non-Ferrous Metal Materials Science and Engineering, Ministry of Education, Central South University, Changsha
[4] Taishan City Kam Kiu Aluminium Extrusion Co., Ltd. Postdoctoral Innovation Base, Taishan
来源：
Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2024年 / 38卷 / 05期
关键词：
6013 aluminum alloy; constitutive equation; metallic materials; microstructure evolution; softening mechanism;
D O I：
10.11901/1005.3093.2023.323
中图分类号：
学科分类号：
摘要：
The hot deformation behavior of 6013 Al-alloy at 530~575oC and strain rate of 0.001~0.1 s-1 was studied by hot compression simulation test. Based on the electron backscatter diffraction technique, the microstructure evolution and dynamic softening mechanism were discussed, while the so called Zener-Hollomon (Z) parameter was adopted to represent the combined effect of deformation temperature and strain rate. The results show that the flow stress of the alloy increases with the increase of ln Z, and the deformation activation energy of the alloy under steady state condition is 217.3 kJ/mol. With the increase of lnZ, the recrystallization area fraction and sub-grain size tend to decrease linearly. For 23.91 ≤ lnZ < 29.55, dynamic recrystallization is the main softening mechanism, in which geometric dynamic recrystallization is dominant. For 29.55 < lnZ ≤ 30.24, dynamic recovery is the main softening mechanism. © 2024 Chinese Journal of Materials Research. All rights reserved.
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页码：337 / 346
页数：9
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