6061アルミニウム合金とSUS304ステンレス鋼の摩擦圧接部組織 Microstructures of friction welded joint of 6061 aluminum alloy to 304 stainless steel

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A 6061 aluminum alloy was joined to a 304 stainless steel by friction welding. The structure of aluminum alloy was refined in the vicinity of the weld interface. However, the Vickers hardness was decreased near the interface since the precipitates were dissolved in the aluminum alloy matrix by the friction heat. The width of heat affected zone (HAZ) was decreased as the increase in the friction and upset pressure (<i>P</i><sub>1</sub> and <i>P</i><sub>2</sub>) increased. The sound joints were obtained welded by <i>P</i><sub>1</sub> =30 MPa, <i>P</i><sub>2</sub> =60 MPa and <i>t</i><sub>1</sub> (friction time) ≥2.0 s. The higher <i>P</i><sub>1</sub> made the joint strength decrease owing to the excess formation of brittle intermetallic compounds at the weld interface. The inter-diffusion of each element through the weld interface were revealed using TEM–EDS analysis. Fe<sub>2</sub>Al<sub>5</sub> was mainly formed at the weld interface. The welding temperature was estimated to be under the eutectic temperature of Al/Fe system(925 K) by the thickness of intermetallic compound. Therefore, it is assumed that this friction welding was carried out in solid state in this system.

収録刊行物

  • 軽金属  

    軽金属 48(1), 36-41, 1998-01-30 

    The Japan Institute of Light Metals

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各種コード

  • NII論文ID(NAID)
    10002664346
  • NII書誌ID(NCID)
    AN00069773
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    04515994
  • NDL 記事登録ID
    4392691
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-284
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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