Journal
MATERIALS LETTERS
Volume 261, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2019.127066
Keywords
Mg-Bi-Ca alloy; High ductility; Extrusion; Texture
Funding
- National Natural Science Foundation of China [51701060]
- Natural Science Foundation of Hebei Province [E2016202130]
- Natural Science Foundation of Tianjin city [18JCQNJC03900]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars of Hebei Province [C20190505]
- 100 Foreign Experts Plan of Hebei Province
- Joint Doctoral Training Foundation of HEBUT [2018HW0008]
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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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