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A high-ductility extruded Mg-Bi-Ca alloy

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Authors
Meng, S. J.; Yu, H.; Fan, S. D.; Kim, Y. M.; Park, S. H.; Zhao, W. M.; You, B. S.; Shin, K. S.
Issue Date
2020-02
Publisher
Elsevier BV
Citation
Materials Letters, Vol.261, p. 127066
Abstract
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.
ISSN
0167-577X
URI
http://hdl.handle.net/10371/168894
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
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