Lattice Dynamics of Martensitic Transformations Examined by Atomistic Simulations

Details Lattice Dynamics of Martensitic Transformations Examined by Atomistic Simulations Lattice Dynamics of Martensitic Transformations Examined by Atomistic Simulations

1997-06-24

arxiv.org/abs/cond-mat/9706248v1

Physics

Condensed Matter

Materials Science

7 pages, 4 figures, Contribution submitted to the "IV European Symposium on Martensitic Transformations" (ESOMAT 97), July 1-5

Scientific paper

We have performaed molecular dynamics simulations of Fe(80)Ni(20) alloys using an inter-atomic potential of the EAM-type which allows the simulation of the martensite-austenite transition. We present results, showing the development of an inhomogeneous shear system on a nanoscale during the thermally induced austenitic transition. In addition to this we obtained the phonon dispersion relations of the martensite phase by calculating the dynamical structure factor from our simulation results. On approaching the transition temperature the phonon dispersion shows anomalies which might be connected with the formation of the microstructure during the austenitic transition.

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