[G] Martensitic and Displacive transformation

[314] Deformation behavior of a heterogeneous-nano structured austenitic steel at cryogenic temperature and its deformation mechanism

*Hua JIANG¹, Chihiro WATANABE², Norimitsu KOGA², Yoshiteru AOYAGI³, Masakazu KOBAYASHI⁴, Hiromi MIURA⁴ (1. Kanazawa University (GSNST), 2. Kanazawa University, 3. Tohoku University, 4. Toyohashi University of Technology)

Keywords:HN structure、Twinning、Martensite transformation、Cryogenic temperature、ε-martensite

HN組織オーステナイト系SUS316LN鋼は77 Kでの引張変形中に非常に優れた強度と延性が表した．この特異な変形挙動は，電子顕微鏡法とX線回折測定を用いて，変形中の組織変化から変形機構を調査した．