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

• 箕田 正

  住友軽金属工業（株）研究開発センター

• 吉田 英雄

  住友軽金属工業（株）研究開発センター

• 都筑 隆之

  三菱重工業（株）

書誌事項

タイトル別名

• The effect of reversion heat treatment on bendability of 7475 aluminum alloy sheet.
• 7475 アルミニウム ゴウキンバン ノ マゲ カコウセイ ニ オヨボス フクゲン ショリ ノ コウカ

抄録

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

  一般社団法人 軽金属学会

キーワード

• 7475 aluminum alloy
• aircraft
• heat treatment
• reversion
• formability

詳細情報

• CRID: 1390001206335064960
• NII論文ID: 10002666276
• NII書誌ID: AN00069773
• DOI: 10.2464/jilm.49.161
• COI: 1:CAS:528:DyaK1MXivVWjtL4%3D
• ISSN: 18808018
• ISSN: 04515994
• ISSN: http://id.crossref.org/issn/04515994
• NDL書誌ID: 4705339
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4705339
• 本文言語コード: ja
• 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