# Solid solution decomposition and Guinier-Preston zone formation in Al-Cu alloys: A kinetic theory with anisotropic interactions

Source: [Solid solution decomposition and Guinier-Preston zone formation in Al-Cu alloys: A kinetic theory with anisotropic interactions](<https://www.sota2.com/research/paper/68fa37661e209131ce8b1c78>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T22:21:49.710Z

Authors: A. Yu. Stroev, O. I. Gorbatov, Yu. N. Gornostyrev, P. A. Korzhavyi

Published: 2017-11-14T07:27:57.000Z

## Abstract

Using methods of statistical kinetic theory parametrized with first-principles interatomic interactions that include chemical and strain contributions, we investigated the kinetics of decomposition and microstructure formation in Al-Cu alloys as a function of temperature and alloy concentration. We show that the decomposition of the solid solution forming platelets of copper, known as Guinier-Preston (GP) zones, includes several stages and that the transition from GP1 to GP2 zones is determined mainly by kinetic factors. With increasing temperature, the model predicts a gradual transition from platelet-like precipitates to equiaxial ones and at intermediate temperatures both precipitate morphologies may coexist.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1711.04984>)

[PDF](<https://arxiv.org/pdf/1711.04984.pdf>)