7475アルミニウム合金板の曲げ加工性に及ぼす復元処理の効果 The effect of reversion heat treatment on bendablity of 7475 aluminum alloy sheet

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A new process of producing airplane frames was designed to reduce the costs. In this new process, 7475–W aluminum alloy sheets followed by reversion heat treatment (RHT) were used before roll formings instead of 7475–O ones. In this process, the hardness of the sheets after RHT should be below HV120, which was the limit hardness of roll forming. The most suitable condition of RHT, 453 K–40 s was recommended in this study. But the hardness after RHT wasn't reduced to the as-quenched condition. Furthermore, the hardness of the as-quenched specimen followed by RHT was raised to HV110 level. It was confirmed that copper addition reduces the precipitating temperature of η′ and η phase in the Al–Zn–Mg alloy. Then it was suggested that the dissolution of GP Zones and precipitation of η′ and η phase occurred simultaneously in 7475–W aluminum alloy sheet at the reversion heat treatment of 453 K–40 s.

収録刊行物

  • 軽金属  

    軽金属 49(4), 161-165, 1999-04-30 

    The Japan Institute of Light Metals

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各種コード

  • NII論文ID(NAID)
    10002666276
  • 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
    4705339
  • 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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