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

Abstract

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 θ′-plates on strength property were discussed. The results show that the precipitation distribution of θ′ was significantly affected by the loading orientation during stress aging of Al−Cu single crystals. Loading along close to 〈011〉{sub Al} directions provided more uniform precipitation distribution of θ′ as compared to loading along close to 〈001〉{sub Al} directions, and therefore provided higher strengthening stress of the θ′-plates for the stress aging sample. The results suggested that regulating the distribution of θ′ and therefore improving strength property are possible via controlling the loading orientation during stress aging. - Highlights: • We studied the effect of loading directions on stress aging of Al−Cu single crystal. • Precipitation distribution of θ′ was noticeably affected by the loading direction. • Loading along close to 〈011〉{sub Al} directions reduced the stress-orienting effect. • The strength property is closely related to the precipitation distribution of θ′. • It is possible to regulate the distribution of θ′more » and improve strength property.« less

Authors:
 [1];  [1];  [2];  [1];  [2]; ;  [1]
  1. School of Material Science and Engineering, Central South University, Changsha 410083 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22587163
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Characterization; Journal Volume: 117; Other Information: Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; AGING; ALLOYS; COMPRESSION; DISTRIBUTION; LOADING; MICROSTRUCTURE; MONOCRYSTALS; PRECIPITATION; STRESSES; TRANSMISSION ELECTRON MICROSCOPY

Citation Formats

Chen, Jiqiang, Chen, Zhiguo, E-mail: zgchen@mail.csu.edu.cn, Hunan University of Humanities, Science and Technology, Loudi 417000, Deng, Yunlai, State Key Laboratory of High Performance and Complex Manufacturing, Central South University, Changsha 410083, Guo, Xiaobin, and Ren, Jieke. Effect of loading orientations on the microstructure and property of Al−Cu single crystal during stress aging. United States: N. p., 2016. Web. doi:10.1016/J.MATCHAR.2016.04.017.
Chen, Jiqiang, Chen, Zhiguo, E-mail: zgchen@mail.csu.edu.cn, Hunan University of Humanities, Science and Technology, Loudi 417000, Deng, Yunlai, State Key Laboratory of High Performance and Complex Manufacturing, Central South University, Changsha 410083, Guo, Xiaobin, & Ren, Jieke. Effect of loading orientations on the microstructure and property of Al−Cu single crystal during stress aging. United States. doi:10.1016/J.MATCHAR.2016.04.017.
Chen, Jiqiang, Chen, Zhiguo, E-mail: zgchen@mail.csu.edu.cn, Hunan University of Humanities, Science and Technology, Loudi 417000, Deng, Yunlai, State Key Laboratory of High Performance and Complex Manufacturing, Central South University, Changsha 410083, Guo, Xiaobin, and Ren, Jieke. 2016. "Effect of loading orientations on the microstructure and property of Al−Cu single crystal during stress aging". United States. doi:10.1016/J.MATCHAR.2016.04.017.
@article{osti_22587163,
title = {Effect of loading orientations on the microstructure and property of Al−Cu single crystal during stress aging},
author = {Chen, Jiqiang and Chen, Zhiguo, E-mail: zgchen@mail.csu.edu.cn and Hunan University of Humanities, Science and Technology, Loudi 417000 and Deng, Yunlai and State Key Laboratory of High Performance and Complex Manufacturing, Central South University, Changsha 410083 and Guo, Xiaobin and Ren, Jieke},
abstractNote = {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 θ′-plates on strength property were discussed. The results show that the precipitation distribution of θ′ was significantly affected by the loading orientation during stress aging of Al−Cu single crystals. Loading along close to 〈011〉{sub Al} directions provided more uniform precipitation distribution of θ′ as compared to loading along close to 〈001〉{sub Al} directions, and therefore provided higher strengthening stress of the θ′-plates for the stress aging sample. The results suggested that regulating the distribution of θ′ and therefore improving strength property are possible via controlling the loading orientation during stress aging. - Highlights: • We studied the effect of loading directions on stress aging of Al−Cu single crystal. • Precipitation distribution of θ′ was noticeably affected by the loading direction. • Loading along close to 〈011〉{sub Al} directions reduced the stress-orienting effect. • The strength property is closely related to the precipitation distribution of θ′. • It is possible to regulate the distribution of θ′ and improve strength property.},
doi = {10.1016/J.MATCHAR.2016.04.017},
journal = {Materials Characterization},
number = ,
volume = 117,
place = {United States},
year = 2016,
month = 7
}
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