Modelling of heterogeneous precipitate distribution evolution during friction stir welding process

被引：102
|
作者：
Kamp, N.
Sullivan, A.
Tomasi, R.
Robson, J. D.
机构：
[1] Univ Manchester, Sch Math, Manchester M1 7HS, Lancs, England
[2] Univ Nantes, Ecole Polytech, F-44306 Nantes 3, France
来源：
ACTA MATERIALIA | 2006年 / 54卷 / 08期
基金：
英国工程与自然科学研究理事会;
关键词：
aluminium alloys; friction stir welding; precipitation; modelling;
D O I：
10.1016/j.actamat.2005.12.024
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A numerical model based on the Kampmann and Wagner method is developed to predict the evolution of precipitate distribution during friction stir welding (FSW). The model has been applied to FSW of AA7449, an aerospace aluminium alloy. It considers both metastable and equilibrium precipitate phases and the transition between them. It also predicts the evolution of grain boundary precipitates and their effect on the precipitate free zone size. The model has been calibrated against results from isothermal and quench experiments. Subsequent predictions for welds show good qualitative agreement between the model and observation. The model has also been used to explore the effect of different FSW parameters on the predicted precipitate evolution. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：2003 / 2014
页数：12
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