Fe-Mo合金の減衰能について

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タイトル別名
  • Damping Capacity of Fe-Mo Alloys
  • Fe Mo ゴウキン ノ ゲンスイノウ ニ ツイテ

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The measurements of internal friction Q−1 and mechanical properties have been carried out for open-melted Fe-Mo alloys containing 0∼16%Mo. The Q−1 values linearly increase with the maximum shear strain amplitude εm and decrease after reaching a peak at εm=about 1.2×10−4. This peak heights gradually diminish with increasing tensile load. The Q−1 values are as small as 0.5×10−3 in the cold-worked state, while they are considerably large in the annealed state and increase with annealing temperature. The highest Q−1 value of 58×10−3 is obtained with an Fe-6%Mo alloy annealed at 1200°C for 1 h.<BR>The results obtained indicate that Q−1 increases with measuring temperature and decreases rapidly with external magnetic field. The fairly large value of Q−1 in these alloys are mainly due to the effect of magnetomechanical hysteresis. The mechanical strengths of Fe-Mo alloys increase with Mo content, for example, an Fe-6%Mo alloy shows a tensile strength of 390 MPa and a yield strength of 200 MPa, an elongation of 29% and Vickers hardness 135, when subjected to annealing at 1000°C for 1 h.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 41 (8), 820-823, 1977

    公益社団法人 日本金属学会

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