Mn-Ni-V系非強磁性エリンバー型合金について

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  • Nonferromagnetic Elinvar-Type Alloys in the Mn-Ni-V System
  • Mn Ni Vケイ ヒ キョウジセイ エリンバーカタ ゴウキン ニ ツイテ

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Young’s modulus at high temperatures, and thermal expansion and hardness at room temperature have been measured with Mn-Ni-V alloys subjected to various heat treatments and cold working. The Young’s modulus vs temperature curves of the ternary alloys annealed at 900°C indicate anomalous changes related to antiferromagnetic\ ightleftarrowsparamagnetic transformations. The temperature coefficient of Young’s modulus is greatly affected by annealing, water quenching, cold working, and reheating after cold working or water quenching; it also varies with the alloy composition. The temperature coefficient vs composition curves are also found to exhibit large positive maxima. These results show that the ternary alloys have the Elinvar characteristics.

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