Molecular dynamic simulation of a homogeneous bcc -> hcp transition

Details Molecular dynamic simulation of a homogeneous bcc -> hcp transition Molecular dynamic simulation of a homogeneous bcc -> hcp transition

2001-03-13

arxiv.org/abs/cond-mat/0103278v1

Physics

Condensed Matter

Materials Science

11 pages plus 8 figures (GIF format); to appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.63.224116

We have performed molecular dynamic simulations of a Martensitic bcc->hcp transformation in a homogeneous system. The system evolves into three Martensitic variants, sharing a common nearest neighbor vector along a bcc <111> direction, plus an fcc region. Nucleation occurs locally, followed by subsequent growth. We monitor the time-dependent scattering S(q,t) during the transformation, and find anomalous, Brillouin zone-dependent scattering similar to that observed experimentally in a number of systems above the transformation temperature. This scattering is shown to be related to the elastic strain associated with the transformation, and is not directly related to the phonon response.

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