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

被引：138

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

页码：66 / 74

页数：9

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