In situ transmission electron microscopy observations of precipitation and a new orientation relationship between γ-Mg17Al12 and magnesium-based matrix in an Mg-Al-Zn-Sn alloy

被引：16
|
作者：
Liu, Yu [1 ,2 ]
Zhao, Dongshan [1 ,2 ]
Nie, Xin [1 ,2 ]
Tao, Hongyu [1 ,2 ]
Wang, Jianbo [1 ,2 ]
Gui, Jianian [1 ,2 ]
机构：
[1] Wuhan Univ, Sch Phys & Technol, Minist Educ, Wuhan 430072, Peoples R China
[2] Wuhan Univ, Key Lab Artificial Micro & Nano Struct, Minist Educ, Wuhan 430072, Peoples R China
来源：
PHILOSOPHICAL MAGAZINE LETTERS | 2012年 / 92卷 / 12期
基金：
中国国家自然科学基金;
关键词：
electron microscopy; magnesium alloys; aging; precipitation; age hardening; orientation relationships; O-LATTICE THEORY; FOIL THICKNESS; AZ91; CRYSTALLOGRAPHY; MICROSTRUCTURE; MORPHOLOGY; MG17AL12;
D O I：
10.1080/09500839.2012.715247
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An in situ observation of the precipitation of gamma-Mg17Al12 phase in a die-cast Mg-Al-Zn-Sn alloy was performed using a transmission electron microscope equipped with a heating stage maintained at 403K for 100 min. The addition of a small amount of Sn to the AZ91 system accelerates the development of the gamma-Mg17Al12 phase formed during continuous precipitation. A new orientation relationship between the gamma-Mg17Al12 precipitate and alpha-Mg matrix was identified as [1210](alpha)//[(1) over bar 33](gamma), (0001)(alpha)//(321)(gamma).
引用
收藏
页码：668 / 674
页数：7
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