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

页码：66 / 74

页数：9

共 61 条

[1] DIFFUSION-LIMITED PHASE TRANSFORMATIONS - A COMPARISON AND CRITICAL EVALUATION OF MATHEMATICAL APPROXIMATIONS
AARON, HB
FAINSTEIN, D
KOTLER, GR
[J]. JOURNAL OF APPLIED PHYSICS, 1970, 41 (11) : 4404 - +
[2] Kinetics of phase change I - General theory
Avrami, M
[J]. JOURNAL OF CHEMICAL PHYSICS, 1939, 7 (12) : 1103 - 1112
[3] BAGARYATSKII YA, 1952, DOKL AKAD NAUK SSSR, V87, P559
[4] Modelling of precipitation reactions in industrial processing
Bratland, DH
Grong, O
Shercliff, H
Myhr, OR
Tjotta, S
[J]. ACTA MATERIALIA, 1997, 45 (01) : 1 - 22
[5] Cartaud L, 1976, P 4 INT C STRENGTH M, V1, P214
[6] Christian JW, 1975, THEORY TRANSFORMATIO
[7] Self-consistent modelling of the plastic deformation of FCC polycrystals and its implications for diffraction measurements of internal stresses
Clausen, B
Lorentzen, T
Leffers, T
[J]. ACTA MATERIALIA, 1998, 46 (09) : 3087 - 3098
[8] Davis JR, 1993, ASM SPECIALITY HDB A
[9] Influence of predeformation and ageing of an Al-Zn-Mg alloy - II. Modeling of precipitation kinetics and yield stress
Deschamps, A
Brechet, Y
[J]. ACTA MATERIALIA, 1998, 47 (01) : 293 - 305
[10] A yield strength model for the Al-Mg-Si-Cu alloy AA6111
Esmaeili, S
Lloyd, DJ
Poole, WJ
[J]. ACTA MATERIALIA, 2003, 51 (08) : 2243 - 2257

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