title: Effect of LPSO and SFs on microstructure evolution and mechanical properties of Mg-Gd-Y-Zn-Zr alloy.
abstract: High performance Mg-8.2Gd-3.8Y-1.0Zn-0.4Zr alloy with high strength and excellent ductility has been successfully developed by hot extrusion. The effect of plate-shaped long period stacking ordered (LPSO) phases and solute-segregated stacking faults (SFs) on the dynamically recrystallization (DRX) behavior was analyzed. The plate-shaped LPSO phases stimulate the DRX by particle stimulated nucleation mechanism, leading to higher DRX ratio and weaker basal texture. While for the alloy with dense fine SFs inside the original grains, discontinuous DRX initially occurs at the original grain boundaries, and the DRX is obviously restricted. Consequently, alloy containing dense SFs exhibits higher strength but lower ductility compared with alloy with plated-shaped LPSO phases.
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR China.|Research Center for Advanced Magnesium Technology, Nagaoka University of Technology, Nagaoka 940-2188, Japan.
authors.forename: Chao
authors.initials: C
authors.lastname: Xu
authors.affiliation: Research Center for Advanced Magnesium Technology, Nagaoka University of Technology, Nagaoka 940-2188, Japan.
authors.forename: Taiki
authors.initials: T
authors.lastname: Nakata
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR China.
authors.forename: Xiaoguang
authors.initials: X
authors.lastname: Qiao
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR China.
authors.forename: Mingyi
authors.initials: M
authors.lastname: Zheng
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR China.
authors.forename: Kun
authors.initials: K
authors.lastname: Wu
authors.affiliation: Research Center for Advanced Magnesium Technology, Nagaoka University of Technology, Nagaoka 940-2188, Japan.
authors.forename: Shigeharu
authors.initials: S
authors.lastname: Kamado