Mixing Enthalpyを活用した合金設計の可能性

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  • 三浦 博己
    豊橋技術科学大学　機械工学系
  • 今 政晶
    三菱マテリアル株式会社　銅加工事業部　銅加工開発センター
  • 小林 正和
    豊橋技術科学大学　機械工学系

書誌事項

タイトル別名
  • Possibility of Alloying Design Employing Mixing Enthalpy
  • Mixing Enthalpy オ カツヨウ シタ ゴウキン セッケイ ノ カノウセイ

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<p>Microstructures and mechanical properties of Cu–Zr and Cu–Zr–B alloys were systematically investigated and the origin of their differences was precisely discussed. Addition of 100 ppm B to Cu–Zr alloy could drastically improve the mechanical properties, even while the microstructure and electrical conductivity were unchanged. Especially the tensile strength and ductility were evidently raised by the slight addition of B. From the above experimental results, a hypothesis that extremely low mixing enthalpy can probably cause formation dipoles and/or clusters of the impurity elements which contribute to strengthening without spoiling electrical conductivity has been proposed.</p>

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