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Title: Improvement of mechanical behaviors of a superlight Mg-Li base alloy by duplex phases and fine precipitates

Limitations of strength and formability are the major obstacles to the industrial application of magnesium alloys. Here, we demonstrate, by producing the duplex phases and fine intermetallic particles in composition-optimized superlight Mg-Li-Al alloys, a unique approach to simultaneously improve the comprehensive mechanical properties (a strength-ductility balance). In conclusion, the phase components and microstructures, including the size, morphology, and distribution of precipitated-intermetallic particles can be optimized by tuning the Li content, which strongly influences the work-hardening behavior and tension-compression yield asymmetry.
Authors:
 [1] ;  [2] ;  [3] ;  [2] ;  [2] ;  [4] ; ORCiD logo [5] ; ORCiD logo [6]
  1. Harbin Engineering Univ., Harbin (People's Republic of China); Zhengzhou Univ., Zhengzhou (People's Republic of China)
  2. Zhejiang Univ., Hangzhou (People's Republic of China)
  3. Zhengzhou Univ., Zhengzhou (People's Republic of China)
  4. Univ. of Tennessee, Knoxville, TN (United States)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  6. Harbin Engineering Univ., Harbin (People's Republic of China)
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Journal of Alloys and Compounds
Additional Journal Information:
Journal Volume: 735; Journal Issue: C; Journal ID: ISSN 0925-8388
Publisher:
Elsevier
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Mg-Li alloy; Mechanical properties; Work-hardening; Tension-compression yield asymmetry
OSTI Identifier:
1415908

Zou, Yun, Zhang, Lehao, Li, Yang, Wang, Hongtao, Liu, Jiabin, Liaw, Peter K., Bei, Hongbin, and Zhang, Zhongwu. Improvement of mechanical behaviors of a superlight Mg-Li base alloy by duplex phases and fine precipitates. United States: N. p., Web. doi:10.1016/j.jallcom.2017.12.025.
Zou, Yun, Zhang, Lehao, Li, Yang, Wang, Hongtao, Liu, Jiabin, Liaw, Peter K., Bei, Hongbin, & Zhang, Zhongwu. Improvement of mechanical behaviors of a superlight Mg-Li base alloy by duplex phases and fine precipitates. United States. doi:10.1016/j.jallcom.2017.12.025.
Zou, Yun, Zhang, Lehao, Li, Yang, Wang, Hongtao, Liu, Jiabin, Liaw, Peter K., Bei, Hongbin, and Zhang, Zhongwu. 2017. "Improvement of mechanical behaviors of a superlight Mg-Li base alloy by duplex phases and fine precipitates". United States. doi:10.1016/j.jallcom.2017.12.025. https://www.osti.gov/servlets/purl/1415908.
@article{osti_1415908,
title = {Improvement of mechanical behaviors of a superlight Mg-Li base alloy by duplex phases and fine precipitates},
author = {Zou, Yun and Zhang, Lehao and Li, Yang and Wang, Hongtao and Liu, Jiabin and Liaw, Peter K. and Bei, Hongbin and Zhang, Zhongwu},
abstractNote = {Limitations of strength and formability are the major obstacles to the industrial application of magnesium alloys. Here, we demonstrate, by producing the duplex phases and fine intermetallic particles in composition-optimized superlight Mg-Li-Al alloys, a unique approach to simultaneously improve the comprehensive mechanical properties (a strength-ductility balance). In conclusion, the phase components and microstructures, including the size, morphology, and distribution of precipitated-intermetallic particles can be optimized by tuning the Li content, which strongly influences the work-hardening behavior and tension-compression yield asymmetry.},
doi = {10.1016/j.jallcom.2017.12.025},
journal = {Journal of Alloys and Compounds},
number = C,
volume = 735,
place = {United States},
year = {2017},
month = {12}
}