郭胜锋
Regulating Precipitates by Simple Cold Deformations to
2019-8-27 22:11
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Regulating Precipitates by Simple Cold Deformations to 

Strengthen Mg Alloys: A Review

Bo Song 1,*,Jia She 2,Ning Guo 1,Risheng Qiu 2,Hucheng Pan 3,*,Linjiang Chai 4,Changlin Yang 5,Shengfeng Guo 1 andRenlong Xin 2,*

1School of Materials and Energy, Southwest University, Chongqing 400715, China

2College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China

3Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), College of Materials Science and Engineering, Northeastern University, Shenyang 110819, China

4College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China

5State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China

Abstract

Regulating precipitates is still an important issue in the development of high-strength Mg alloys, due to it determining the precipitation hardening effect. Cold deformation, as a simple and low-cost method, can remarkably influence the precipitate features. It is found that pre-cold deformation before aging can be utilized to enhance the precipitation hardening effect of Mg alloys. Moreover, post-deformation after aging could be an effective method to regulate precipitation orientation. In this review, recent research on the regulation of precipitation behavior by cold deformation in Mg-Al, Mg-Zn, and Mg-RE (RE: rare-earth elements) alloy systems was critically reviewed. The changes in precipitate features and mechanical properties of peak-aged Mg alloys via cold deformation were summarized. The corresponding strengthening mechanisms were also discussed. Finally, further research directions in this field were proposed.


https://www.mdpi.com/1996-1944/12/16/2507



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