Enhancing Thermal Stability of Binary Al-Mg Alloys by Tailoring Grain Orientations Using a High Solute Mg Content

被引：7
|
作者：
Zha, Min [1 ,2 ,3 ,4 ]
Meng, Xiang-Tao [2 ,3 ]
Yu, Zhi-Yuan [2 ,3 ]
Zhang, Hong-Min [2 ,3 ]
Yin, Hao-Liang [2 ,3 ]
Zhang, Qing-Quan [2 ,3 ]
Wang, Cheng [1 ,2 ,3 ]
Wang, Hui-Yuan [1 ,2 ,3 ,4 ]
Jiang, Qi-Chuan [2 ,3 ]
机构：
[1] Jilin Univ, State Key Lab Super Hard Mat, Changchun 130012, Jilin, Peoples R China
[2] Jilin Univ, Key Lab Automobile Mat, Minist Educ, Nanling Campus,5988 Renmin St, Changchun 130025, Jilin, Peoples R China
[3] Jilin Univ, Sch Mat Sci & Engn, Nanling Campus,5988 Renmin St, Changchun 130025, Jilin, Peoples R China
[4] Jilin Univ, Int Ctr Future Sci, Changchun 130012, Jilin, Peoples R China
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2019年 / 50A卷 / 11期
关键词：
MICROSTRUCTURAL EVOLUTION; HIGH-STRENGTH; AL-7MG ALLOY; ALUMINUM; THERMODYNAMICS; METALS;
D O I：
10.1007/s11661-019-05404-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We found that the high solid solution Al-9 Mg alloy with a bimodal grain structure processed by hard-plate rolling (HPR) exhibited enhanced thermal stability despite annealing at 275 degrees C for 24 hours. The notable thermal stability originates from the inherent stable deformation microstructure dominated by (101)-oriented coarse grains induced by a high solute Mg content, which further stabilizes the microstructure upon static annealing. Moreover, recovery occurs preferentially in coarse grains, leading to slow coarsening of the ultrafine grains. This paper provides a new way to improve thermal stability of severely deformed Al-Mg alloys by tailoring grain orientations. (C) The Minerals, Metals & Materials Society and ASM International 2019
引用
收藏
页码：5264 / 5270
页数：7
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