Al-Ge合金の振動減衰能

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タイトル別名
  • Damping Capacity of Al-Ge Alloys
  • Al Ge ゴウキン ノ シンドウ ゲンスイノウ

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The logarithmic decrement δ and the rigidity modulus G were investigated for heat-treated and cold-worked Al-Ge alloys containing 2 to 20 mass%Ge. The δ and G values were measured by an inverted torsion pendulum method.<BR>The δ values upon furnace cooling were somewhat higher than those upon water quenching, which were as low as 0.007. By cold working after heat treatment, the δ values of all alloys were increased considerably. With increasing Ge concentration, the δ upon cold working increased abruptly to 5 mass%Ge and then increased gradually. Moreover, in alloys cold worked after furnace cooling, the δ became higher than those cold-worked after water quenching.<BR>With increasing Ge concentration, the G increased, and cold working after heat treatment caused G to decrease. The ΔG effect increased abruptly up to 5 mass%Ge and then increased gradually, and high δ values were obtained in the alloys with a large ΔG effect.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 55 (5), 601-604, 1991

    公益社団法人 日本金属学会

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