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

页码：5264 / 5270

页数：7

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