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金澤 健二 , 杉本 真優 , 高橋 幸男

M&M材料力学カンファレンス 2010, 1029-1030, 2010-10-09

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長島 伸夫 , 古谷 佳之 , 木村 勇次 , 井上 忠信

… Both tempformed and conventional steels showed surface fracture in short life regions and fish-eye fracture in long life regions. … The fish-eye facture origins were oxide inclusions comprised of Si, Mg, Ca other than Al. …

M&M材料力学カンファレンス 2010, 1022-1023, 2010-10-09

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蛭川 寿 , 古谷 佳之

… In the fatigue tests, due to the cleanliness improvement, inclusions never caused fish-eye fracture even in the nitrided specimens. … Although the local stress amplitudes beneath the hardened layer exceeded the fatigue limit expected from the local hardness, the nitrided specimens showed surface fracture only. … These results meant that C-increase and P-addition improved the surface fracture properties. …

鐵と鋼 : 日本鐡鋼協會々誌 95(1), 79-85, 2009-01-01

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塩澤 和章 , 村井 優文

… that is, there were two curves composed of a surface inclusion-induced fracture mode and a subsurface inclusion-induced fracture mode with granular bright facet (GBF) area in the vicinity of inclusion. … Roughness of the GBF area was about 2 times larger than the area outside the GBF in the fish-eye zone relating to the size and distribution of carbide particle in the matrix. …

日本機械学會論文集. A編 74(742), 885-893, 2008-06-25

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酒井 達雄 , 近藤 崇 , 小林 俊太 , 速石 正和 , 村瀬 拓朗

… These steels tempered at both temperatures indicated significant dual S-N characteristics consisting of S-N curves for surface-induced fracture and interior inclusion-induced fracture. … In the case of interior inclusion-induced fracture, fish-eye pattern can be observed depending on the depth of the inclusion played a role as the crack starter. …

M&M材料力学カンファレンス 2007, 449-450, 2007-10-24

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菅田 淳 , 杉山 幸久 , 箕島 弘二

… The area that was called the Fish-eye and FGA was observed in the fracture surface. … In addition, beach marks were observed in Fish-eye under repeated two-step loadings. …

年次大会講演論文集 : JSME annual meeting 2007(1), 345-346, 2007-09-07

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