Influence of predeformation and ageing of an Al-Zn-Mg alloy. 2: Modeling of precipitation kinetics and yield stress

Journal Article · Fri Dec 11 04:00:00 EST 1998 · Acta Materialia

DOI:https://doi.org/10.1016/S1359-6454(98)00296-1· OSTI ID:328287

Deschamps, A ^[1]; Brechet, Y ^[1]

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1. Domaine Univ., St. Martin d`Heres (France)

The authors 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.

• OSTI ID: 328287
• Journal Information: Acta Materialia, Journal Name: Acta Materialia Journal Issue: 1 Vol. 47; ISSN 1359-6454; ISSN ACMAFD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
KINETICS
MAGNESIUM ALLOYS
MATHEMATICAL MODELS
MICROSTRUCTURE
PARTICLE SIZE
PRECIPITATION
YIELD STRENGTH
ZINC ALLOYS