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Microstructural fingerprints of phase transitions in shock-loaded iron
S. J. Wang; M. L. Sui; Y. T. Chen; Q. H. Lu; E. Ma; X. Y. Pei; Q. Z. Li; H. B. Hu
2013
Source PublicationScientific Reports
ISSN2045-2322
Volume3
AbstractThe complex structural transformation in crystals under static pressure or shock loading has been a subject of long-standing interest to materials scientists and physicists. The polymorphic transformation is of particular importance for iron (Fe), due to its technological and sociological significance in the development of human civilization, as well as its prominent presence in the earth's core. The martensitic transformation epsilon ->epsilon (bcc -> hcp) in iron under shock-loading, due to its reversible and transient nature, requires non-trivial detective work to uncover its occurrence. Here we reveal refined microstructural fingerprints, needle-like colonies and three sets of {112}< 111 >. twins with a threefold symmetry, with tell-tale features that are indicative of two sequential martensitic transformations in the reversible alpha ->epsilon phase transition, even though no e is retained in the post-shock samples. The signature orientation relationships are consistent with previously-proposed transformation mechanisms, and the unique microstructural fingerprints enable a quantitative assessment of the volume fraction transformed.
description.department[wang, s. j. ; lu, q. h.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [sui, m. l.] beijing univ technol, inst microstruct & property adv mat, beijing 100124, peoples r china. [chen, y. t. ; pei, x. y. ; li, q. z. ; hu, h. b.] china acad engn phys, inst fluid phys, mianyang 621900, peoples r china. [ma, e.] johns hopkins univ, dept mat sci & engn, baltimore, md 21218 usa. ; sui, ml (reprint author), beijing univ technol, inst microstruct & property adv mat, beijing 100124, peoples r china. ; mlsui@bjut.edu.cn
KeywordEpsilon-phase High-pressure Transformation Mechanism Dynamics Bismuth Alloys Waves
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Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71552
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
S. J. Wang,M. L. Sui,Y. T. Chen,et al. Microstructural fingerprints of phase transitions in shock-loaded iron[J]. Scientific Reports,2013,3.
APA S. J. Wang.,M. L. Sui.,Y. T. Chen.,Q. H. Lu.,E. Ma.,...&H. B. Hu.(2013).Microstructural fingerprints of phase transitions in shock-loaded iron.Scientific Reports,3.
MLA S. J. Wang,et al."Microstructural fingerprints of phase transitions in shock-loaded iron".Scientific Reports 3(2013).
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