Mechanical Properties of High Strength Al-Mg-Si Alloy during Solidification

• Nagaumi Hiromi

  Nikkei Research & Development Center (NRDC), Nippon Light Metal Company Ltd.

• Suvanchai Pongsugitwat

  Department of Metallurgical Engineering, Faculty of Engineering, Chulalongkorn University

• Okane Toshimitsu

  Digital Manufacturing Research Center, National Institute of Advanced Industrial Science and Technology (AIST)

• Umeda Takateru

  Department of Metallurgical Engineering, Faculty of Engineering, Chulalongkorn University Professor Emeritus, The University of Tokyo

抄録

Mechanical properties of high strength Al-Mg-Si alloy during solidification have been investigated. Tensile strength and ductility have been measured by using an electromagnetic induction heating tensile machine. The relation between solid fraction and temperature was calculated by the Gulliver-Scheil model applied with the thermodynamic data-base Thermo-Calc for multi-component system, and its validity was confirmed, comparing with the experiment. Zero Strength Temperature (ZST) and Zero Ductility Temperature (ZDT) were evaluated and correlated with the corresponding solid fraction. Furthermore, the capability of the high temperature tensile test to apply to the break-out of direct chill (DC) casting was examined, comparing the breaking section of the tensile test sample with that of DC billet. Main conclusions are as follows: (1) ZST and ZDT were 893 and 883 K at which the corresponding solid fraction were 0.69 and 0.77, respectively. (2) Breaking sections of the tensile testing sample and DC billet had a similar rupture structure where intergranular fracture was observed. Consequently, it was considered that breaking elongation and breaking strength that were obtained by the present tensile test can be used as one of the criteria of Direct-Chill casting crack formation.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 47 (12), 2918-2924, 2006

  公益社団法人 日本金属学会

キーワード

• tensile strength
• ductility
• aluminum-magnesium-silicon alloy
• intergranular fracture
• hot tearing
• fracture strain
• solidification

詳細情報

• CRID: 1390001204250327936
• NII論文ID: 130004452994
• NII論文ID: 10018421340
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.47.2918
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 8587787
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8587787
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/47/12/47_12_2918/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可