Effect of loading orientations on the microstructure and property of Al-Cu single crystal during stress aging

被引：17

作者：

Chen, Jiqiang ^{[1
]}

Chen, Zhiguo ^{[1
,2
]}

Deng, Yunlai ^{[1
,3
]}

Guo, Xiaobin ^{[1
]}

Ren, Jieke ^{[1
]}

机构：

[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China

[2] Hunan Univ Humanities Sci & Technol, Loudi 417000, Peoples R China

[3] Cent S Univ, State Key Lab High Performance & Complex Mfg, Changsha 410083, Peoples R China

来源：

MATERIALS CHARACTERIZATION | 2016年 / 117卷

基金：

中国国家自然科学基金;

关键词：

Al-Cu single crystal; Stress aging; theta '; Microstructure; Property; Loading orientation; MG-AG ALLOY; XCU ALLOYS; COHERENT INTERFACE; ALUMINUM-ALLOY; PRECIPITATION; THETA'; CREEP; NUCLEATION; GROWTH; PHASE;

D O I：

10.1016/j.matchar.2016.04.017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The precipitation behavior and property of Al-Cu alloy during stress aging under various loading orientations were investigated using single crystals. The resulting microstructures and the strength property were examined by transmission electron microscope (TEM) and compression test, respectively, and the effect of the distribution of theta'-plates on strength property were discussed. The results show that the precipitation distribution of theta' was significantly affected by the loading orientation during stress aging of Al-Cu single crystals. Loading along close to < 011 >(Al) directions provided more uniform precipitation distribution of theta' as compared to loading along close to < 001 >(Al) directions, and therefore provided higher strengthening stress of the theta'-plates for the stress aging sample. The results suggested that regulating the distribution of theta' and therefore improving strength property are possible via controlling the loading orientation during stress aging. (C) 2016 Elsevier Inc. All rights reserved.

引用

页码：35 / 40

页数：6

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