A high-ductility extruded Mg-Bi-Ca alloy

被引：39
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
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.
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页数：4
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