フェライト基地球状黒鉛鋳鉄の高温粒界脆性

• 岩渕 義孝

  釧路鉱業高等専門学校　工博

• 小林 勲

  同校

• 成田 英記

  （株）日本製鋼所室蘭製作所

• 竹之内 朋夫

  同　工博

書誌事項

タイトル別名

• Low-Ductility Intergranular Fracture of Ferritic Ductile Cast Iron at Elevated Temperature
• 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

抄録

  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.

収録刊行物

• 鋳造工学

  鋳造工学 68 (3), 209-215, 1996

  公益社団法人 日本鋳造工学会

詳細情報

• CRID: 1390282681482739456
• NII論文ID: 130004556224
• NII論文ID: 10002113105
• NII書誌ID: AN10514770
• DOI: 10.11279/jfes.68.209
• ISSN: 21855374
• ISSN: 13420429
• NDL書誌ID: 3976335
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3976335
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可