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Title
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A hidden single-stage martensitic transformation from B2 parent phase to B19 ' martensite phase in an aged alloy
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Author
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Abstract
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| The aged Ni-rich NiTi shape memory alloys (SMAs) exhibit the multi-stage martensitic transformation (MMT), which has important influences on functional properties and practical applications of the NiTi SMAs. A hidden single-stage martensitic transformation from B2 parent phase to B19' martensite phase is found in an aged Ni51Ti49 alloy, which happens concurrently with a commonly observed two-stage martensitic transformation B2-R-B19' (R: martensite phase) and actually composes one stage of a multi-stage martensitic transformation (MMT) together with the two-stage one. B2-B19' martensitic transformation occurs in the NiTi matrix containing Ni4Ti3 precipitates with relatively large inter-particle space, while B2-R-B19' transformation takes place in the NiTi matrix with Ni4Ti3 precipitates having relatively small inter-particle space. (C) 2019 Elsevier B.V. All rights reserved. |
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Language
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English
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Source (journal)
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Materials letters. - Amsterdam
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Publication
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Amsterdam
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2019
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ISSN
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0167-577X
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DOI
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10.1016/J.MATLET.2019.06.055
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Volume/pages
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253
(2019)
, p. 99-101
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ISI
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000482629500025
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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