Simultaneous improvements in strength and ductility of as-extruded Mg-1.0Sn-0.5Zn alloy via Ce addition in combination with pre-twining deformation

被引：16

作者：

Yang, Huabao ^{[1
]}

Chai, Yanfu ^{[1
,2
,3
]}

Jiang, Bin ^{[3
]}

Yuan, Ming ^{[3
]}

Yang, Qingshan ^{[4
]}

Xia, Dabiao ^{[5
]}

He, Junjie ^{[6
]}

机构：

[1] Shaoxing Univ, Sch Mech & Elect Engn, Shaoxing 312000, Peoples R China

[2] Tianjin Univ, Sch Mat Sci & Engn, Tianjin Key Lab Composite & Funct Mat, Tianjin 300072, Peoples R China

[3] Chongqing Univ, Coll Mat Sci & Engn, State Key Lab Mech Transmiss, Chongqing 400044, Peoples R China

[4] Chongqing Univ Sci & Technol, Sch Met & Mat Engn, Chongqing 401331, Peoples R China

[5] Ctr New Energy Mat & Mfg, Jihua Lab, Foshan 528000, Peoples R China

[6] Yunnan Univ, Coll Mat Sci & Engn, Kunming 650091, Yunnan, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2022年 / 927卷

基金：

中国国家自然科学基金;

关键词：

Mg-Sn-Zn alloy; Ce content; Pre-twining deformation; Microstructure; Mechanical properties; ROLLED MAGNESIUM ALLOY; MECHANICAL-PROPERTIES; TERNARY ALLOYS; THERMODYNAMIC PROPERTIES; MG ALLOYS; 1ST-PRINCIPLES CALCULATIONS; MICROSTRUCTURE EVOLUTION; OPTICAL-PROPERTIES; FORMABILITY; SHEET;

D O I：

10.1016/j.jallcom.2022.166879

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In the present study, the comprehensive effects of Ce addition and pre-twining deformation on the mi-crostructure evolution and mechanical properties of Mg-1.0Sn-0.5Zn alloys were systematically in-vestigated. After Ce addition, two phases (CeMgSn and CeMgZn2) were newly emerged, which eventually hampered grain growth and postponed {10-12} tensile twin extinction during annealing subsequent to pre-compression. Besides, due to prominent grain refinement, the addition of Ce into as-extruded Mg-Sn-Zn alloy gave rise to a noticeable improvement in strength. As for the application of pre-twining deformation, it could induce a significant increase in the tensile ductility via texture tailoring, and the relative Visco-Plastic Self-Consistent (VPSC) simulation confirmed that the main reason was attributed to the vigorous activation of {10-12} tensile twins. As a result, both the strength and ductility of the as-extruded Mg-Sn-Zn alloy were substantially improved via the combination of Ce addition (obvious grain refinement) and pre-twining deformation (effective texture regulation).(c) 2022 Elsevier B.V. All rights reserved.

引用

页数：12

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