Evaluation of Deformation Behavior of In Grains and Grain Boundaries of L-grade Austenitic Stainless Steel316L
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- NAGASHIMA Nobuo
- National Institute for Materials Science
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- HAYAKAWA Masao
- National Institute for Materials Science
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- TSUKADA Takashi
- Japan Atomic Energy Agency(JAEA)
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- KAJI Yoshiyuki
- Japan Atomic Energy Agency(JAEA)
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- MIWA Yukio
- Japan Atomic Energy Agency(JAEA)
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- ANDO Masami
- Japan Nuclear Energy Safety Organization
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- NAKATA Kiyotomo
- Japan Nuclear Energy Safety Organization
Bibliographic Information
- Other Title
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- 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
- 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
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Abstract
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.
Journal
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- Journal of High Pressure Institute of Japan
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Journal of High Pressure Institute of Japan 47 (4), 236-244, 2009
HIGH PRESSURE INSTITUTE OF JAPN(HPI)
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Details 詳細情報について
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- CRID
- 1390001204618073728
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- NII Article ID
- 10025568014
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- NII Book ID
- AN00011762
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- ISSN
- 13479598
- 03870154
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- NDL BIB ID
- 10408609
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed