Low-Ductility Intergranular Fracture of Ferritic Ductile Cast Iron at Elevated Temperature
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- Iwabuchi Yoshitaka
- 釧路鉱業高等専門学校 工博
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- iNarita Hideki
- (株)日本製鋼所室蘭製作所
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- Takenouchi Tomoo
- 同 工博
Bibliographic Information
- Other Title
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- フェライト基地球状黒鉛鋳鉄の高温粒界脆性
- フェライト キチ キュウジョウ コクエン チュウテツ ノ コウオン リュウカイ
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Abstract
Elevated temperature brittleness (ETB) of ferritic ductile cast iron has been referred to as reduced ductility within an elevated temperature range and has been related to grain boundary brittleness. The phenomenon of ETB has not been yet clearly understood. In this study, the mechanism of ETB was studied in terms of strain rate and chemical composition. Yield strength was related to solid solution hardening of silicon. Serration, which was observed at temperatures between 425K and 625K, was suppressed by increasing strain rate and adding molybdenum. The reduced tensile ductility was the direct result of intergranular embrittlement and the temperature, at which ductility was minimum, was strain-dependent and was about 700K. Heats containing low phosphorus were found to be immune to ETB, indicating silicon and molybdenum had little effects on it.
Journal
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- Journal of Japan Foundry Engineering Society
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Journal of Japan Foundry Engineering Society 68 (3), 209-215, 1996
Japan Foundry Engineering Society
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Details 詳細情報について
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- CRID
- 1390282681482739456
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- NII Article ID
- 130004556224
- 10002113105
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- NII Book ID
- AN10514770
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- ISSN
- 21855374
- 13420429
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- NDL BIB ID
- 3976335
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed