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Strength and Ductility Balance on an Extruded Mg–Zn–Ca–La Alloy
Author(s) -
Du Yuzhou,
Zheng Mingyi,
Qiao Xiaoguang,
Chen Hongjun,
Jiang Bailing
Publication year - 2017
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.201600842
Subject(s) - materials science , microstructure , alloy , scanning electron microscope , electron backscatter diffraction , transmission electron microscopy , dynamic recrystallization , metallurgy , elongation , ductility (earth science) , recrystallization (geology) , composite material , ultimate tensile strength , nanotechnology , hot working , paleontology , creep , biology
Mg–6Zn–0.7Ca–0.2La (wt%) alloy is cast and extruded in the present study. The microstructure of the as‐extruded Mg–6Zn–0.7Ca–0.2La (wt%) alloy is investigated via scanning electron microscopy (SEM), transmission electron microscope (TEM) and electron backscattering diffraction (EBSD). Results show that the as‐extruded Mg–6Zn–0.7Ca–0.2La (wt%) alloy exhibited a balanced strength and ductility with the yield strength of 261 MPa and elongation‐to‐fracture of 20.7%. The superior strength is mainly attributed to grain refinement and precipitates, whereas the plasticity is ascribed to fine homogenous microstructure and weaker texture. The fine microstructure is obtained in the as‐extruded Mg–6Zn–0.7Ca–0.2La (wt%) alloy, mainly attributing to the dynamic recrystallization and pinning effects from precipitates.