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Improving the Ductility of Mg–Gd–Y–Zr Alloy through Extrusion and a Following Rolling
Author(s) -
Wan Yingchun,
Liu Chuming,
Xiao Hongchao,
Gao Yonghao,
Jiang Shug,
Chen Zhiyong
Publication year - 2018
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201701041
Subject(s) - materials science , alloy , extrusion , microstructure , ductility (earth science) , metallurgy , texture (cosmology) , grain boundary , homogenization (climate) , deformation (meteorology) , composite material , creep , biodiversity , ecology , artificial intelligence , computer science , image (mathematics) , biology
Ductility of the Mg–8Gd–3Y–0.4Zr alloy is improved through extrusion and a following rolling performed on the as‐cast alloy. Microstructure evolution, texture, and mechanical properties of the alloy are systematically investigated. The results indicate that the continuous‐cluster distributed β phase particles observed in the as‐cast alloy are fragmented and dissolved during the plastic deformation. Nearly random texture, improved ductility (by 60%), and strength (by 23%) are obtained. To uncover the formation mechanism of the texture, uniaxial compression on the alloys with and without homogenization (to obtain alloys without and with β phase) is performed. The microstructure characterization reveals that β phase impedes the grain boundary immigration, resulting in the nearly random texture, thereby improving the mechanical properties, especially the ductility of the alloy.