2%Fe-Cu合金の磁場中冷却効果における誘起した単軸磁気異方性と析出過程の関係

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タイトル別名
  • Relation between Induced Ferromagnetic Anisotropy and Precipitation Process in the Magnetic Annealing Effect of 2% Iron-Copper Alloy
  • 2 Fe-Cu ゴウキン ノ ジバ チュウ レイキャク コウカ ニ オケル ユウキ シタ タンジク ジキ イホウセイ ト セキシュツ カテイ ノ カンケイ

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In order to study the magnetic annealing effect in the 2%Fe-Cu alloy,the changes of induced ferromagnetic anisotropy and micro-Vickers hardness were observed during the precipitation process. In the specimens quenched from 900°C and then aged at 700°C and 600°C in a magnetic field, the anisotropy constant Ku was obtained from the induced anisotropy energy which was found to be expressed experimentally as E=−Kucos2Θ, where Θ is the angle between the direction of magnetic field of ca. 5000 Oe applied during aging and that of the measuring field of ca. 10 KOe. The maximum value of anisotropy constant in these specimens was 4×103 ergs/cc. The influence on the anisotropy constant of the transformation of the α-precipitates to the ferromagnetic γ-precipitates and of repeated quenching in accumulating aging time was observed. The magnetic annealing affects the initial precipitation stage rather than the over-growth stage. The origin of this effect seems to be explained qualitatively not by magnetoelastic anisotropy nor by directional order, but rather by shape-anisotropy of the α-precipitates.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 23 (12), 731-735, 1959

    公益社団法人 日本金属学会

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