Mechanical Properties of Thermomechanical Treated Hyper-Eutectic Al–Si–(Fe,Mn,Cu) Materials

• Umezawa Osamu

  Division of Mechanical Engineering and Materials Science Graduate School of Engineering, Yokohama National University

書誌事項

タイトル別名

• Mechanical Properties of Thermomechanical Treated Hyper-Eutectic Al–Si–(Fe,Mn,Cu) Materials

抄録

Tensile and high-cycle fatigue behavior of thermomechanical treated hyper-eutectic Al–Si–(Fe,Mn,Cu) materials were studied. Through the repeated thermomechanical treatment (RTMT) which is a repeat of the multi steps cold-working followed by heat treatment, Si crystals and/or intermetallic compounds were broken into some fragments and dispersed in the aluminum matrix. Fine dispersion of the second phase particles exhibited good ductility, since early fracture was overcome. A few large Si crystals or aggregates of compounds, however, gave an origin of fatigue crack generation. Since microcrack linkage generates a larger fetal crack, not only refinement but also random distribution of second particles may be required to improve fatigue strength at and below room temperature. At higher temperature, on the other hand, dynamic recovery may cause apparent strain rate dependence on flow curves.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 46 (12), 2616-2623, 2005

  公益社団法人 日本金属学会

キーワード

• aluminum–silicon alloys
• thermomechanical treatment
• microstructual refinement
• flow stress
• ductility
• fatigue fracture

詳細情報

• CRID: 1390001204250205312
• NII論文ID: 130004452679
• NII論文ID: 10017149293
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.46.2616
• COI: 1:CAS:528:DC%2BD28Xht1Ohur0%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 7757403
• Web Site: http://hdl.handle.net/10131/7894
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7757403
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/46/12/46_12_2616/_pdf
• 本文言語コード: en
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