Mn-Cu-Ni系非磁性エリンバー型合金について

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  • Nonmagnetic Elinvar-Type Alloys in the Mn-Cu-Ni System
  • Mn-Cu-Ni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 the thermal expansion, rigidity modulus and hardness at room temperature have been carried out with Mn-Cu-Ni alloys subjected to a variety of heat treatment and cold working. Mn-Cu-Ni alloys containing 5.06∼55.16%Cu and 4.08∼25.35%Ni slow-cooled after heating for 1 hr at 950°C showed a minimum in Young’s modulus vs.temperature curves and its minimum 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 states, the difference becoming remarkably large with increasing manganese or nickel 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 or 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 reheated state after cold-working or water-quenching. Further the oxidation and corrosion resistance properties of Mn-Cu-Ni alloys were superior to those Mn-Cu and Mn-Ni binary alloys.

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  • 日本金属学会誌

    日本金属学会誌 35 (12), 1155-1161, 1971

    公益社団法人 日本金属学会

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