# Kinetics of coherent order-disorder transition in $Al\_3 Zr$

Source: [Kinetics of coherent order-disorder transition in $Al\_3 Zr$](<https://www.sota2.com/research/paper/68fa255f2c2a3760193af793>)

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

Data updated: 2025-10-24T10:39:56.118Z

Authors: Laurent Proville, Alphonse Finel

Published: 2001-09-14T09:01:04.000Z

## Abstract

Within a phase field approach which takes the strain-induced elasticity into account, the kinetics of the coherent order-disorder transition is investigated for the specific case of $Al\_3 Zr$ alloy. It is shown that a microstructure with cubic $L1\_2$ precipitates appears as a transient state during the decomposition of a homogeneous disordered solid solution into a microstructure with tetragonal $DO\_{23}$ precipitates embedded into a disordered matrix. At low enough temperature, favored by a weak internal stress, only $L1\_2$ precipitates grow in the transient microstructure preceding nucleation of the $DO\_{23}$ precipitates that occurs exclusively at the interface of the solid solution with the $L1\_2$ precipitates. Analysis of microstructures at nanoscopic scale shows a characteristic rod shape for the $DO\_{23}$ precipitates due to the combination of their tetragonal symmetry and their large internal stress.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/cond-mat/0109262>)

[PDF](<https://arxiv.org/pdf/cond-mat/0109262.pdf>)