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

页码：668 / 674

页数：7