[G] Fundamentals of Mechanical Properties

[19] Strain rate dependent deformation behavior and its mechanism of a heterogeneous nano-structured austenitic steel

*JIANG Hua¹, WATANABE Chihiro², MIYAJIMA Yoji², KOGA Norimitsu², AOYAGI Yoshiteru³, KOBAYASHI Masakazu⁴, MIURA Hiromi⁴ (1. Gratuate school of Kanazawa Univ., 2. Inst. of Sci. & Eng. of Kanazawa Univ., 3. Tohoku Univ., 4. Toyohashi Univ. of Tech.)

Keywords:Heterogeneous nano-structure、SUS316LN stainless steel、In-situ X-ray measurement、Dislocation density、Deformation twin

オーステナイト鋼SUS316LNに冷間強圧延を施すことで，ヘテロナノ組織が形成し，極めて高い強度に加え，充分な延性も達成された．この優れた延性の原因について，実験的に検討を行った．