Formation of multiple orientation relationships of Q precipitates in Al-Mg-Si-Cu alloys

被引：47

作者：

Fiawoo, M. ^{[1
]}

Gao, X. ^{[1
]}

Bourgeois, L. ^{[1
,2
]}

Parson, N. ^{[3
]}

Zhang, X. Q. ^{[4
]}

Couper, M. ^{[1
]}

Nie, J. F. ^{[1
]}

机构：

[1] Monash Univ, Dept Mat Engn, Clayton, Vic 3800, Australia

[2] Monash Univ, Monash Ctr Electron Microscopy, Clayton, Vic 3800, Australia

[3] Rio Tinto Alcan, Arvida Res & Dev Ctr, Jonquiere, PQ G7S 4K8, Canada

[4] Rio Tinto Alcan, Melbourne, Vic, Australia

来源：

SCRIPTA MATERIALIA | 2014年 / 88卷

基金：

澳大利亚研究理事会;

关键词：

Aluminium alloys; Precipitates; Orientation relationship; HAADF-STEM; TRANSMISSION ELECTRON-MICROSCOPY; HEAT-TREATMENT; ADDITIONS; AA6111;

D O I：

10.1016/j.scriptamat.2014.05.013

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Precipitation of Q laths/rods in some age-hardenable aluminium alloys has been traditionally accepted to occur with a single orientation relationship with the alpha-Al matrix. In this study, the orientation relationships of Q precipitates are characterized by atomic resolution high-angle annular dark-field scanning transmission electron microscopy. Contrary to the long-standing view, multiple orientation relationships are found between Q precipitates and the alpha-Al matrix. These orientations are correlated by rigid-body rotations about the long axes of the Q laths! rods. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：53 / 56

页数：4

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