A hidden single-stage martensitic transformation from B2 parent phase to B19′martensite phase in an aged Ni51Ti49alloy
A hidden single-stage martensitic transformation from B2 parent phase to B19′martensite phase in an aged Ni51Ti49alloy
复制标题
时效Ni51Ti49合金中从B2母相到B19-马氏体相的隐藏单阶段马氏体相变
DOI：
10.1016/j.matlet.2019.06.055
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发表时间：
2019
影响因子：
3
通讯作者：
Zhang X P
中科院分区：
文献类型：
--
作者：
Zeng C Y;Cao S;Li Y Y;Zhao Z X;Yao X Y;Ma X;Zhang X P
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 Ni51Ti49alloy, 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 Ni4Ti3precipitates with relatively large inter-particle space, while B2–R–B19′ transformation takes place in the NiTi matrix with Ni4Ti3precipitates having relatively small inter-particle space.
