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Title: Magnetostructural Transition Kinetics in Shocked Iron

Journal Article · · Physical Review Letters
 [1];  [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
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Here, a generalized Heisenberg model is implemented to study the effect of thermal magnetic disorder on kinetics of the Fe α–ε transition. The barrier to bulk martensitic displacement remains large in α-Fe shocked well past the phase line but is much reduced in the [001] α–ε boundary. The first result is consistent with observed overdriving to metastable α, while the second suggests structural instability, as implied by observation of a [001] shock transformation front without plastic relaxation. Reconciling both behaviors may require concurrent treatment of magnetic and structural order.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344; 13-ERD-044
OSTI ID:
1367964
Alternate ID(s):
OSTI ID: 1294716
Report Number(s):
LLNL-JRNL-689345; PRLTAO
Journal Information:
Physical Review Letters, Vol. 117, Issue 8; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

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