# Effect of magnetism on kinetics of "gamma"-"alpha" transformation and pattern formation in iron

Source: [Effect of magnetism on kinetics of "gamma"-"alpha" transformation and pattern formation in iron](<https://www.sota2.com/research/paper/68fa2c0c1e209131ce84c60d>)

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

Data updated: 2025-10-24T15:05:26.448Z

Authors: I.K.Razumov, Yu.N.Gornostyrev, M.I.Katsnelson

Published: 2013-02-19T15:29:42.000Z

## Abstract

Kinetics of polymorphous "gamma"-"alfa" transformation in Fe is studied numerically within a model taking into account both lattice and magnetic degrees of freedom, based on first-principle calculations of the total energy for different magnetic states. It is shown that magnetoelastic phenomena, namely, a strong sensitivity of the potential relief along the Bain deformation path to the magnetic state, are crucial for the picture of the transformation. With the temperature increase, a scenario of the phase transformation evolves from a homogeneous lattice instability at T\<Ms (Ms is the temperature of the beginning of the martensitic transformation) to the growth and nucleation of embryos of the new phase at T\>Ms. In the latter case, a stage of formation of a tweed-like structure occurs, with a strong short-range order and slow interphase fluctuations.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1302.4643>)

[PDF](<https://arxiv.org/pdf/1302.4643.pdf>)