単純強圧延オーステナイト系ステンレス鋼中のヘテロナノ組織が集合組織と延性に及ぼす影響

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タイトル別名
  • Influences of Heterogeneous Nano-Structure Developed in Heavily Cold-Rolled Austenitic Stainless Steel on Texture and Ductility
  • タンジュン キョウアツエン オーステナイトケイ ステンレスコウ チュウ ノ ヘテロナノ ソシキ ガ シュウゴウ ソシキ ト エンセイ ニ オヨボス エイキョウ

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<p>SUS316LN austenitic stainless steel was simply and heavily cold-rolled up to 92% reduction in thickness. The microstructure developed was composed of complicated heterogeneous nano-structure; “eye-shaped” twin domains, which were surrounded by shear bands, were embedded in low-angle lamellar boundaries. The cold-rolled austenitic steel exhibited marvelous high strength of 1.95 GPa when tensile tested normal to the rolling direction, while lower strength of 1.57 GPa along the rolling direction. Moderate ductility around 10% was still retained in spite of the high strength. The superior mechanical properties of the heavily cold-rolled austenitic stainless steel would be attributed to complicated heterogeneous nano-structures. These achieved strengths were comparable with those obtained by methods of severe plastic deformation.</p>

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 81 (12), 536-541, 2017

    公益社団法人 日本金属学会

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