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Fe3Al合金形變誘導有序顯微結構及合金元素的作用(Ⅱ)

Strain-induced Microstructural Changes and Effects of Alloying Elements for Fe3Al-based Alloys (Ⅱ)

  • 摘要: 從變誘導有序顯微結構變化的角度,說明了合金元素鉻和鉬對Fe3Al基合金力學性能和顯微組織的影響.結果表明:合金元素鉻和鉬主要固溶于Fe3Al基合金中,鉻的主要作用是固溶軟化,促進形變誘導無序化;鉬主要起因溶強化作用,阻礙形變誘導無序化,有利于蠕變回復誘導有序化.

     

    Abstract: Effects of Cr and Mo on machanical properties and micro-structure of Fe3Al based alloys were investigated from the point of the strain-induced microstructural changes in Fe3Al-based alloys during room temperature deformation and high temperature creep. It is found that both Cr and Mo soluted into the matrix of Fe3Al-based alloys. TheAddition of Cr can accelerate strain-induced disordering resulting in an effect of solution softening. The addition of Mo is beneficial to creep-induced rreordering and to increase the recrys tallization temperature, resulting in solution sirengthening.

     

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