A high-ductility extruded Mg-Bi-Ca alloy

被引：38

作者：

Meng, S. J. ^{[1
,2
]}

Yu, H. ^{[1
]}

Fan, S. D. ^{[1
]}

Kim, Y. M. ^{[2
]}

Park, S. H. ^{[3
]}

Zhao, W. M. ^{[1
]}

You, B. S. ^{[2
]}

Shin, K. S. ^{[4
]}

机构：

[1] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China

[2] Korea Inst Mat Sci, Magnesium Dept, Chang Won 51508, South Korea

[3] Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea

[4] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 08826, South Korea

来源：

MATERIALS LETTERS | 2020年 / 261卷 / 261期

基金：

中国国家自然科学基金;

关键词：

Mg-Bi-Ca alloy; High ductility; Extrusion; Texture; MECHANICAL-PROPERTIES; MICROSTRUCTURE; TEXTURE; REFINEMENT; EXTRUSION;

D O I：

10.1016/j.matlet.2019.127066

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to develop low cost Mg alloy with high ductility, a new micro-alloying rare earth free Mg-1.32Bi-0.72Ca (wt.%, BX11) alloy was successfully fabricated by single step extrusion and its microstructure, texture and tensile properties were investigated and discussed in this study. The as-extruded BX11 alloy demonstrates a weakened texture with < 2-1-12 > parallel to the extrusion direction (ED) and a fine dynamic recrystallized microstructure with both micro-scale Mg2Bi2Ca and Mg3Bi2 particles and nanoscale Mg2Ca and Mg3Bi2 precipitates, exhibiting an excellent tensile elongation of 43% at room temperature. This remarkably high ductility is mainly attributed to the refined microstructure as well as weakened < 2-1-12 >parallel to ED texture. (C) 2019 Elsevier B.V. All rights reserved.

引用

页数：4

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