Molecular dynamic simulation of a homogeneous bcc{r_arrow}hcp transition
We have performed molecular dynamic simulations of a martensitic bcc{r_arrow}hcp transformation in a homogeneous system. The system evolves into three martensitic variants, sharing a common nearest-neighbor vector along a bcc{l_angle}111{r_angle} 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.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40203529
- Journal Information:
- Physical Review B, Journal Name: Physical Review B Journal Issue: 22 Vol. 63; ISSN 0163-1829
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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