Effect of Carbon Content on Mechanical Properties of Electroslag Remelted Fe3Al Based Intermetallic Alloys.

• Baligidad R. G.

  Defence Metallurgical Research Laboratory

• Prakash U.

  Defence Metallurgical Research Laboratory

• Rao V. Ramakrishna

  Defence Metallurgical Research Laboratory

• Rao P. K.

  Indian Institute of Technology

• Ballal N. B.

  Indian Institute of Technology

抄録

The effect of carbon content (0.013 to 0.50 wt%C) on structure and mechanical properties of electroslag remelted iron aluminides based on Fe₃Al containing approximately 16 wt% (28 at%) aluminium alloy has been studied. At low carbon contents (0.031 wt% or less) the ESR ingots suffer from hydrogen embrittlement which results in poor mechanical properties. At high (0.074 wt% or more) carbon contents the hardness and strength of ESR ingots increase with increasing carbon content without significant change in ductility. This is attributed to the solid solution strengthening arising from interstitial carbon present in the Fe₃Al matrix as well as to the increased amount of Fe₃AlC (perovskite) precipitation. The mechanical properties of these high carbon ESR cast alloys are comparable or superior to those reported for high purity wrought alloys with similar aluminium contents. The machinability of ESR ingots improves with increase in carbon content. This is attributed to the presence of uniformly distributed Fe₃AlC precipitates in the ingots which allow formation of small and uniform size chips during machining.

収録刊行物

• ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ

  ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ 36 (12), 1453-1458, 1996

  一般社団法人 日本鉄鋼協会

キーワード

• electroslag remelting
• iron aluminide
• carbon content
• mechanical properties
• machinability

詳細情報

• CRID: 1390282681429912704
• NII論文ID: 10015620148
• NII書誌ID: AA10680712
• DOI: 10.2355/isijinternational.36.1453
• COI: 1:CAS:528:DyaK2sXhsFSm
• ISSN: 13475460
• ISSN: 09151559
• Web Site: http://www.jstage.jst.go.jp/article/isijinternational1989/36/12/36_12_1453/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可