Direct observation of martensitic reversion from lenticular martensite to austenite in Fe-Ni alloy
Direct observation of martensitic reversion from lenticular martensite to austenite in Fe-Ni alloy
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DOI：
10.1016/j.matlet.2016.10.056
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发表时间：
2017-01
影响因子：
3
通讯作者：
Nobuo Nakada
中科院分区：
文献类型：
--
作者：
Nobuo Nakada
Martensitic reversion from lenticular martensite to austenite was investigated in Fe-29%Ni alloy. Martensitically reversed austenite has essentially the same crystal orientation as untransformed austenite, which means that the crystallographic reversibility appears even in non-thermoelastic martensitic transformations. On the other hand, a small amount of the reversed austenite forms having a specific twin orientation with respect to the untransformed austenite. The formation of twined austenite reveals that reversed austenite nucleates at the untransformed austenite/martensite interface and grows into the interior of lenticular martensite. In addition, it was found that martensitically reversed austenite contains high-density dislocations leading to a significant strengthening.
