Mn-Cu-Cr系非磁性エリンバー型合金について

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タイトル別名
  • Nonmagnetic Elinvar-Type Alloys in Mn-Cu-Cr System
  • Mn-Cu-Crケイ ヒジセイ エリンバーカタ ゴウキン ニ ツイテ

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Measurements of Young’s modulus at −150°∼400°C and of thermal expansion, rigidity modulus and hardness at room temperature have been carried out with Mn-Cu-Cr alloys subjected to a variety of heat treatment and cold-working. It was found that Mn-Cu-Cr alloys containing about 5.0∼56.0%Cu and 0.1∼24.0%Cr slow-cooled after heating for 1 hr at 950°C showed a minimum in Young’s modulus-temperature curves and its anomaly may be a antiferromagnetic Néel points. The values of Young’s modulus at room temperature in the annealed state were higher than those in the cold-worked or water-quenched state, the difference becoming remarkably large with increasing manganese or chromium content. The temperature coefficient of Young’s modulus showed a wide variation by annealing, water-quenching, cold-working and reheating after water-quenching or cold-working, and also with alloy composition. It is also to be noted that the temperature coefficients of Young’s modulus as a function of composition exhibited a large maximum and minimum in positive and negative signs, thus showing the Elinvar property. The variation in rigidity modulus and its temperature coefficient by heat treatment, cold-working and composition showed a close resemblance to that in Young’s modulus and its temperature coefficient. The hardness in the annealed, cold-worked and water-quenched states were generally lower than that in the reheated state after cold-working or water-quenching. Further the oxidation and corrosion resistance properties of Mn-Cu-Cr alloys were superior to binary alloys in Mn-Cu and Mn-Ni.

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  • 日本金属学会誌

    日本金属学会誌 35 (12), 1150-1155, 1971

    公益社団法人 日本金属学会

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