Enhanced age-hardening response and microstructure study of an Ag-modified Mg-Sn-Zn based alloy

被引：13
|
作者：
Shi, Z. -Z. [1 ]
Zhang, W. -Z. [2 ]
机构：
[1] Univ Lorraine, CNRS UMR 7239, Lab Etud Microstruct & Mecan Mat LEM3, F-57045 Metz, France
[2] Tsinghua Univ, Sch Mat Sci & Engn, Key Lab Adv Mat MOE, Beijing 100084, Peoples R China
来源：
PHILOSOPHICAL MAGAZINE LETTERS | 2013年 / 93卷 / 08期
关键词：
magnesium alloys; TEM; microstructure; precipitation; hardness; MN ALLOY; CRYSTALLOGRAPHY; PRECIPITATE; MORPHOLOGY; BEHAVIOR;
D O I：
10.1080/09500839.2013.805267
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new Mg-Sn-Zn based alloy modified with a small amount of Ag exhibits a significantly higher aging peak than that of the base alloy and at a considerably shorter aging time. The enhanced aging response of the Ag-modified alloy is ascribed to the precipitation of densely distributed MgZn2 needles and Mg2Sn plates stimulated by the Ag. A wide and low plateau behind the hardness peak could be associated with rod-shaped precipitates of the orthorhombic Mg54Ag17 phase, aligned with the hexagonal axis of the Mg matrix.
引用
收藏
页码：473 / 480
页数：8
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