Dissimilar Metal Joining of Aluminum to Steel by MIG Arc Brazing Using Flux Cored Wire

• Murakami Taichi

  Joining and Welding Research Institute, Osaka University

• Nakata Kazuhiro

  Joining and Welding Research Institute, Osaka University

• Tong Hongjun

  Welding Research & Mechanical Engineering Dept., DAIHEN Corporation

• Ushio Masao

  Joining and Welding Research Institute, Osaka University

抄録

Dissimilar metal joining of aluminum to steel, which is difficult due to the formation of the brittle intermetallic compound at the interface of the welded joint, by DC pulsed MIG arc brazing in a lap joint with the flux cored Al-Si filler wire has been investigated for the application of the weight saving of automobiles. The major compound formed at the interface between steel and weld metal was determined to be Al_7.4Fe₂Si as the Al-Fe-Si ternary compound. The composition control of weld metal can suppress the growth of the intermetallic compound layer less than the thickness of 2.5 μm. In this condition, the transverse tensile strength of the welded joint was about 80 MPa, 70% of that of Al base metal due to the fracture at HAZ on the aluminum side. The mechanism of the suppressed growth of the intermetallic compound layer during MIG arc brazing has been discussed.

収録刊行物

• ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ

  ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ 43 (10), 1596-1602, 2003

  一般社団法人 日本鉄鋼協会

キーワード

• dissimilar metal joining
• arc brazing
• aluminum
• steel
• intermetallic compound

詳細情報

• CRID: 1390282681428145536
• NII論文ID: 10014450389
• NII書誌ID: AA10680712
• DOI: 10.2355/isijinternational.43.1596
• COI: 1:CAS:528:DC%2BD3sXosVKmsLY%3D
• ISSN: 13475460
• ISSN: 09151559
• Web Site: http://www.jstage.jst.go.jp/article/isijinternational1989/43/10/43_10_1596/_pdf
• 本文言語コード: en
• データソース種別:
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• 抄録ライセンスフラグ: 使用不可