Classification of metastable alloys phases in Al-Mg2Si alloys by HRTEM

被引：29
|
作者：
Matsuda, K [1 ]
Ikeno, S [1 ]
Sato, T [1 ]
Kamio, A [1 ]
机构：
[1] TOKYO INST TECHNOL,FAC ENGN,MEGURO KU,TOKYO 152,JAPAN
来源：
ALUMINIUM ALLOYS: THEIR PHYSICAL AND MECHANICAL PROPERTIES, PTS 1-3 | 1996年 / 217卷
关键词：
aluminum-magnesium-silicon alloy; metastable phase; crystal structure; high resolution transmission electron microscope;
D O I：
10.4028/www.scientific.net/MSF.217-222.707
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The metastable phases in an Al-Mg2Si alloy containing silicon in excess were observed using HRTEM. The observed phases were found to be new three types with different crystal structures from that of the beta' phase (HCP lattice, a=0.407nm, c=0.405nm). The first precipitate has a hexagonal lattice with a=0.405nm, c=0.67nm (the TYPE-A precipitate), and the second one has an orthorhombic lattice with a=0.684nm, b=0.793nm and c=0.405nm (the TYPE-B precipitate). The third one, which is the target in this work, has a hexagonal lattice with a=1.04 +/- 0.02nm and c=0.405nm.
引用
收藏
页码：707 / 712
页数：6
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