Influence of predeformation and ageing of an Al-Zn-Mg Alloy-II. Modeling of precipitation kinetics and yield stress

A. Deschamps, Y. Brechet

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Abstract

We present a model for precipitation kinetics integrating nucleation growth and coarsening. This model allows the description of competitive kinetics of heterogenous and homogeneous precipitation. The precipitation model is coupled to a model for structural hardening predicting the yield stress. This structural hardening model includes the possibility of taking into account the distribution of precipitate size and strength. The model is applied to experimental data on age hardening of Al-Zn-Mg alloys, and allows to describe the effect of a prestraining on the subsequent aging behavior.

Original languageEnglish
Pages (from-to)293-305
Number of pages13
JournalActa Materialia
Volume47
Issue number1
DOIs
Publication statusPublished - 11 Dec 1998
Externally publishedYes

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