Abstract:
:Emergence and time evolution of micro-structured new-phase domains play a crucial role in determining the macroscopic physical and mechanical behaviors of iron under shock compression. Here, we investigate, through molecular dynamics simulations and theoretical modelings, shock-induced phase transition process of iron from body-centered-cubic (bcc) to hexagonal-close-packed (hcp) structure. We present a central-moment method and a rolling-ball algorithm to calculate and analyze the morphology and growth speed of the hcp phase domains, and then propose a phase transition model to clarify our derived growth law of the phase domains. We also demonstrate that the new-phase evolution process undergoes three distinguished stages with different time scales of the hcp phase fraction in the system.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Pang WW,Zhang P,Zhang GC,Xu AG,Zhao XGdoi
10.1038/srep03628subject
Has Abstractpub_date
2014-01-10 00:00:00pages
3628issn
2045-2322pii
srep03628journal_volume
4pub_type
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