Co-Fe-W系新恒弾性合金タンゲリンバー並びにその特性に及ぼすNiの影響について

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タイトル別名
  • New Elinvar-type Alloy “Tungelinvar” in the Ternary System of Cobalt,Iron and Tungsten, and Influence of Addition of Nickel on its Characteristics
  • Co-Fe-Wケイ シン コウ ダンセイ ゴウキン タンゲリンバー ナラビニ ソノ トクセイ ニ オヨボス Ni ノ エイキョウ ニ ツイテ
  • New Elinvar-type Alloy “Tungelinvar” in the Ternary System of Cobalt,Iron and Tungsten, and Influence of Addition of Nickel on its Characteristics

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抄録

According to the rule of the small expansibility of invar proposed previously by Dr. H. Masumoto, it was proposed that there are some invar- and elinvar-type alloys in the cobalt, iron and tungsten system, and also in the quaternary system containing nickel besides these. Thus,the thermal expansion coefficient, the rigiditiy modulus and its temperature coefficient were measured with the ternary and the quaternary alloys mentioned above in annealed state. It was found that the temperature coefficient of rigidity modulus showed its negative minimum value of −0.7×10−5 having a composition with the minimum value of 7.39×10−6 of thermal expansion coefficient in the ternary system; the figures of the curves of iso-temperature coefficient of the modulus were almost the same as those obtained previously with alloys containing cobalt, iron and chromium, cobalt, iron and vanadium, and also cobalt, iron and molybdenum with the exception that the present alloys did not show any positive value of the coefficient. Thus, it has been proved that there are some invar- and elinvar-type alloys in this ternary system as expected. When 10 per cent of nickel was added to the ternary alloys, the range showing positive temperature coefficient of the modulus began to appear. With increase of nickel content,the minimum value of the thermal expansion coefficient became smaller and the positive maximum value of the temperature coefficient of the modulus larger, and the composition at which these special characteristics were observed shifted to the side of low cobalt and low tungsten, finally reaching 36 per cent of nickel in the binary system of iron and nickel; showing the same effect as when the nickel was added to the alloys of cobalt, iron and chromium, of cobalt, iron and vanadium, and of cobalt, iron and molybdenum. These new ternary and quaternary alloys with small temperature coefficient of the modulus have been named “Tungelinvar”.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 25 (11), 716-720, 1961

    公益社団法人 日本金属学会

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