Research progress on mechanical and corrosion behavior and mechanism of long-period ordered stacking Mg-based alloys

被引：0

作者：

Zheng Y.-Q. ^{[1
]}

Zhang Y. ^{[1
]}

Chen L.-S. ^{[1
]}

Tian Y.-Q. ^{[1
]}

Zheng X.-P. ^{[1
]}

Li J.-Y. ^{[2
]}

Yan K.-X. ^{[3
]}

机构：

[1] Colledge of Metallurgy and Energy, North China University of Science and Technology, Tangshan

[2] School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing

[3] Department of Civil Engineering, Tsinghua University, Beijing

来源：

Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2023年 / 33卷 / 01期

关键词：

corrosion performance; kink deformation; LPSO phase; strengthening and toughening mechanism;

D O I：

10.11817/j.ysxb.1004.0609.2021-41076

中图分类号：

学科分类号：

摘要：

At present, low mechanical strength and fast degradation rate are two major defects that restrict the wide application of magnesium alloys. The long-period order (LPSO) phase can effectively improve the tensile strength and yield strength of Mg alloy while maintaining its original elongation, and regulate its corrosion resistance. However, there is no clear quantitative relationship between the phase structure of LPSO and its contribution to mechanical properties. The micro-mechanism of corrosion failure is still controversial and the core problem of mismatch between the relative mechanical and corrosion strengthening effects of LPSO has not been solved. Therefore, starting from the microscopic mechanism of LPSO phase formation, this paper expounded the influence law of LPSO relative recrystallization and strengthening-toughness during the deformation process. The microscopic mechanism of corrosion failure were described according to the competition mechanism between the corrosion barrier of LPSO phase and galvanic corrosion. Meantime, this paper summarized the strengthening mechanism of LPSO phase, and looked forward to the application prospect and development directions of the LPSO phase in magnesium alloys. © 2023 Central South University of Technology. All rights reserved.

引用

页码：112 / 126

页数：14

共 68 条

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