HRTEM Characterization of an Age-Hardened Mg-Ca Binary Alloy

被引：0
作者：
Unekawa, Mariko [1 ,2 ]
Terada, Yoshihiro [1 ]
机构：
[1] Tokyo Inst Technol, Sch Mat & Chem Technol, Dept Mat Sci & Engn, Yokohama 2268502, Japan
[2] LIXIL Corp, Tokyo, Japan
来源：
JOURNAL OF THE JAPAN INSTITUTE OF METALS AND MATERIALS | 2023年 / 87卷 / 08期
关键词：
magnesium-calcium alloy; Mg2Ca; aging; coherency; high-resolution transmission electron microscopy (HRTEM); PRECIPITATION;
D O I：
10.2320/jinstmet.J2023002
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A Mg-2.8 mass% Ca binary alloy was subjected to a homogenization treatment. The three-dimensional morphology and coherency of the parallel to the {1 ⠁010}& alpha; columnar plane of the & alpha;-Mg matrix. The coarsening Mg2Ca precipitate retained coherency with the & alpha;-Mg matrix for aging time of 3 h, which corresponded to the peak-aged condition. Furthermore, during the coarsening process, misfit dislocations were introduced on the planar surface of the precipitates, and the coherent interface became a semi-coherent interface for aging time of 100 h, which corresponded to the over-aged condition. The Mg2Ca precipitates evolved from a hexagonal plate-like morphology to a rectangular morphology and then to a polygonal morphology during aging treatment at 423 K. [doi:10.2320/jinstmet.J2023002]
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页码：231 / 234
页数：4
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