Coupling between plasticity and phase transition in shock- and ramp- compressed single-crystal iron

N Amadou and T de Resseguier and A Dragon and E Brambrink, PHYSICAL REVIEW B, 98, 024104 (2018).

DOI: 10.1103/PhysRevB.98.024104

Molecular dynamics simulations have been used to investigate the coupling process between plasticity and structural phase transformation in single-crystal iron under both shock and ramp compressions. In both cases, iron was found to yield via twinning. Then, the onset of the bcc- hcp phase transformation was shown to be tightly dependent on the plasticity history through a hardening-like effect, which in some conditions may inhibit the nucleation of the hcp phase.

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