Cu-Zn-A1合金の高温形状変化に及ぼす予備変形温度の影響

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タイトル別名
  • Effect of Preparatory-Deformation Temperature on High Temperature Shape Change of a Cu-Zn-Al Alloy
  • Cu-Zn-Al合金の高温形状変化に及ぼす予備変形温度の影響
  • Cu Zn Al ゴウキン ノ コウオン ケイジョウ ヘンカ ニ オヨボス ヨ

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In a previous report, the authors showed that shape-changes in the temperature range 700∼1000 K occur during thermal cycles up to about 1000 K in a Cu-27.6 mass%Zn-3.8 mass%Al alloy which was deformed at room temperature after being quenched from the β phase region to 273 K. The amount of shape-change increases with increasing maximum temperature during the thermal cycles.<BR>In the present report, using a Cu-25.3 mass%Zn-3.9 mass%Al alloy, the effect of deformation temperature on the shape-change has been studied. The samples were deformed at temperatures from 77 to 670 K, using a die in a salt bath, an oil bath, etc. The maximum temperature of each thermal cycle is set at 1000 K. The results show that the amount of shape-change by the thermal cycle is constant for the deformation in a temperature range lower than about 300 K, increases for the deformation up to about 400 K and decreases for the deformation in a higher temperature range. No appreciable shape-change, however, can be detected at 670 K. In the case of the deformation at higher temperatures than 420 K, it was observed that the amount of shape-change decreases with increasing heating time before the deformation.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 51 (7), 694-699, 1987

    公益社団法人 日本金属学会

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