Discrete-element modeling of shock-induced phase transition in iron

Yano, K.; Horie, Y.
April 2000
AIP Conference Proceedings;2000, Vol. 505 Issue 1, p287
Academic Journal
The shock-induced α → ε phase transition in iron has been numerically investigated at the grain level by use of a two dimensional, discrete element model with focus on the metastability and dynamics of the transition. It was found (1) that the transition relaxes to the static metastable surface and (2) that the relaxation time of the transition increases as the wave propagates, and decreases for stronger shock pressure. Also, the calculation showed that the second order kinetics yields the global transition pressure closer to the experimental value than the first order kinetics.


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