M&M材料力学カンファレンス
Online ISSN : 2424-2845
セッションID: MM0708
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高/中エントロピー合金のFCC-HCP変態による高機能化
ー形状記憶効果と耐疲労性ー
*土谷 浩一
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FCC-HCP martensitic transformation is a known cause of transformation-induced plasticity in high manganese steels and shape memory effects in Fe-Mn-Si shape memory alloys. This paper describes the shape memory effect due to FCC-HCP martensitic transformation in Cr20Mn20Fe20Co40-xNix high-entropy alloys.Deformation behavior and low-cycle properties were investigated for Co51-xCr23Mo6Nix medium-entropy alloys. Alloys that underwent FCC-HCP martensitic transformation simultaneously with deformation twinning exhibited improved low-cycle fatigue life.

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