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タイトル: Stress corrosion cracking susceptibility of 310S stainless steel in hydrogenated hot water
著者: Huang, Yen-Jui
Kawakita, Kousuke
Kimura, Akihiko  kyouindb  KAKEN_id
著者名の別形: 黄, 彦瑞
河北, 航介
木村, 晃彦
キーワード: SSRT
Hydrogen assisted SCC
Cross slip
Stacking fault energy
発行日: May-2018
出版者: Elsevier BV
誌名: Nuclear Materials and Energy
巻: 15
開始ページ: 103
終了ページ: 109
抄録: The stress corrosion cracking (SCC) susceptibility of solution-annealed 310S stainless steel (SS) was examined by means of slow-strain rate test (SSRT) method in hot water (288 °C) with dissolved-hydrogen (DH), and the results were compared with those of 316L SS. Almost no SCC was observed in 310S SS, while a remarkable SCC was found in 316L SS showing brittle fracture surfaces and cracks on specimen side surfaces. The SCC observed in 316L SS started as IGSCC while necking, and transferred to TGSCC. It was also shown that sensitization resulted in the suppression of IGSCC of 316L SS. On the assumption that the SCC in hydrogenated hot water can be interpreted in terms of hydrogen assisted SCC, the mechanism of the suppression of SCC in 310S SS is related with a higher nickel content which increases stacking fault energy and facilitates cross slip of dislocations, resulting in the reduction of hydrogen concentration on a unit area of slip plane.
著作権等: © 2018 Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/BY-NC-ND/4.0/).
URI: http://hdl.handle.net/2433/233812
DOI(出版社版): 10.1016/j.nme.2018.03.004
出現コレクション:学術雑誌掲載論文等

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