低炭素オーステナイト系ステンレス鋼SUS316Lの粒内•粒界の変形挙動の評価

DOI Web Site 参考文献12件

書誌事項

タイトル別名
  • Evaluation of Deformation Behavior of In Grains and Grain Boundaries of L-grade Austenitic Stainless Steel316L
  • 低炭素オーステナイト系ステンレス鋼SUS316Lの粒内・粒界の変形挙動の評価
  • テイタンソ オーステナイトケイ ステンレス コウ SUS316L ノ リュウナイ リュウカイ ノ ヘンケイ キョドウ ノ ヒョウカ

この論文をさがす

抄録

In this study, micro-hardness tests and AFM observations were performed on SUS316L low-carbon austenitic stainless steel pre-strained by cold rolling to investigate its deformation behavior. The following results were obtained. Despite the fact that the same plastic strain was applied, post-tensile test AFM showed narrower slip-band spacing in a reduction in area of 30% cold-rolled specimen than the unrolled specimen. Concentrated slip bands were observed near grain boundaries. These were presumably due to slip blocking at grain boundaries. SCC sensitivity increased at a hardness of 300 or higher, the frequency occurrence of a hardness of 300 or higher in the micro-hardness measurements was compared. The micro-hardness did not exceed 300both within grains and at grain boundaries in the unrolled and up to a reduction in area of 20% cold-rolled specimens of before and after the tensile tests. Micro-hardness exceeding 300 was found to occur frequently in after tensile test specimens with a reduction in area of 30% or more, particularly at grain boundaries. It is suggested that the nonuniformity of deformation at grain boundaries plays an important role of IGSCC crack propagation mechanism of low-carbon austenitic stainless steel.

収録刊行物

  • 圧力技術

    圧力技術 47 (4), 236-244, 2009

    一般社団法人 日本高圧力技術協会

参考文献 (12)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ