A model for precipitation kinetics and strengthening in Al-Cu-Mg alloys

被引：134
作者：
Khan, I. N. [1 ]
Starink, M. J. [1 ]
Yan, J. L. [1 ]
机构：
[1] Univ Southampton, Sch Engn Sci, Mat Res Grp, Southampton SO17 1BJ, Hants, England
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 472卷 / 1-2期
关键词：
aluminium alloys; ageing; modelling; precipitation kinetics; co-clusters;
D O I：
10.1016/j.msea.2007.03.033
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A physically based numerical model is developed to predict the microstructural evolution and strengthening in Al-Cu-Mg alloys during isothermal treatments. The modelling of the formation kinetics of the precipitates is based on the Kampmann and Wagner model. The strengthening by the shearable Cu:Mg co-clusters is modelled on the basis of modulus strengthening mechanism and the strengthening by the non-shearable S phase precipitates is based on the Orowan looping mechanism. The model predictions are verified by comparing with the strength and differential isothermal calorimetery data on 2024-T351 aluminium alloys. The microstructural development and strength predictions of the model are generally in good agreement with the experimental data. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：66 / 74
页数：9
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