Furukawa-Sky Review No.8 (April 2012)

  • ツイートする
  • facebookでシェアする


Effects of Cu Addition on Aging Behavior of Al-0.3%Mg-0.5%Si Alloy

Full Text PDF(PDFファイルを開きます974KB)

  • Makoto Ando
  • Yoshikazu Suzuki

The aging behavior of Al-0.3mass%Mg-0.5mass%Si alloys with or without Cu was investigated at the working temperature of radiators (i.e., 90℃). It was observed that Cu addition was not necessarily effective in strengthening the alloys in the cases where these alloys were aged for a long time at the working temperature of radiators. The Cu-free alloy stored at 90℃ for 4300 h possessed approximately the same yield strength as the alloy containing 0.5%Cu or 0.8%Cu. In contrast, when the alloys were stored at room temperature or at 180℃, the yield strength of the alloy containing Cu was larger than that of the alloy not containing Cu. Results of DSC analyses and TEM observations showed that the dominant phases in age hardening were as follows: (i) formation of Mg-Si (-Cu) clusters at room temperature, (ii) formation of clusters and ß″-phase precipitates at 90℃, and (iii) formation of needle-shaped ß″-phase precipitates at 180℃.

技術論文 / Technology Articles

  1. Effect of Experimental Humidity on Fatigue Fracture of 6XXX-series Aluminum Alloys
  2. 極低温における破壊靱性に優れたアルミニウム合金溶接部材の開発(液体水素輸送・貯蔵用アルミニウム材料の研究)
    Development of Aluminum Alloy Welding Member with Superior Fracture Toughness at Cryogenic Temperature (Study of Aluminum Material for Liquid Hydrogen Transportation and Storage Vessels)
  3. 電気化学インピーダンス法による陽極酸化皮膜の耐アルカリ性評価
    Characterization for Alkaline Dissolution of Anodic Oxide Films Formed on Aluminum by EIS
  4. Evolution of Recrystallization Texture in Aluminum Alloy Sheets by Asymmetric-Warm-Rolling
  5. Effects of Cu Addition on Aging Behavior of Al-0.3%Mg-0.5%Si Alloy

Get Adobe Reader

PDFをお読みいただくにはAdobe Readerが必要です。