발간논문

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Vol.30, No.4, 382 ~ 388, 1992
Title
Preferred Orientation of εMartensite in Fe - 15Mn - 5Cr - 5Co - 3Si Alloy
지광구K . K . Jee, 장우양W . Y . Jang, 양권승G . S . Yang, 신명철M . C . Shin
Abstract
The microstructural difference between thermal and stress-induced ε martensite was investigated in iron-based shape memory alloy. The thermal εmartensite plates were found to be randomly distributed with several variants, causing no shape change during cooling and heating. But stress-induced ε plates have almost single variant in one grain. Pole figure analysis showed that ε plates whose [1.63 0 1] ε direction is paralell to tensile stress are preferably formed on the deformation. The [1.63 0 1] εdirection was proved to be the most expandable one in fcc→hcp transformation by [112] γ shear deformation.
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