書誌事項
- タイトル別名
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- Rolling Contact Fatigue of Austempered Cast Irons with Different Graphite Shapes.
- コクエン ケイジョウ ノ コトナル オーステンパ ショリ チュウテツ ノ コロ
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The effects of graphite shapes and matrix structure on the rolling contact fatigue strength of cast iron were investigated using a Nishihara-type wear test machine with gear oil lubricant. Two kinds of spheroidal graphite cast irons with different graphite diameters, compacted vermicular (CV) cast iron and the flake graphite cast iron were austempered at 648K, 573K and 513K for 7.2 ks. They were also quenched from 1123K and tempered at 825K and 552K for 7.2 ks. The rolling contact fatigue limit (F∗) of austempered irons are much higher than those of quenched and tempered irons with the similar graphite morphology and matrix hardness. The morphology of graphite has also large on F∗, and F∗ tends to increase in the order of flake, CV and spheroidal graphite cast iron under the same heat treatment condition. Two types of fatigue cracks were observed : one generated from the contact surface and the other from inside of the specimen. The latter type appeared only in the CV cast iron and the flake graphite cast iron austempered at 648K. The mode of cracking should depend on both the strength and toughness of matrix and the morphology of graphite.
収録刊行物
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- 鋳造工学
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鋳造工学 70 (6), 381-387, 1998
公益社団法人 日本鋳造工学会
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詳細情報 詳細情報について
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- CRID
- 1390282681484365824
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- NII論文ID
- 10002553855
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- NII書誌ID
- AN10514770
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- ISSN
- 21855374
- 13420429
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- NDL書誌ID
- 4502303
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可