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    时效对FeMnSiCrNiTiC合金耐磨性和耐蚀性的影响

    Effect of Aging on Wear and Corrosion Resistance of FeMnSiCrNiTiC Alloy

    • 摘要: 研究了直接时效和形变时效对Fe14.51Mn6.02Si9.10Cr5.06Ni1.49Ti0.16C合金第二相析出行为、耐磨性和耐蚀性的影响。结果表明: 该合金在固溶态的耐磨性能高于1Cr18Ni9Ti不锈钢的; 直接时效和形变时效能提高合金的耐磨性, 后者的效果更好, 特别是在大载荷下; 与直接时效相比, 形变时效后在基体中除析出σ相外还析出了大量的Cr23C6相,因而形变时效降低了合金在NaCl溶液中的耐蚀性, 但对在NaOH溶液中的耐蚀性影响不大; 直接时效对该合金耐蚀性的降低不显著。

       

      Abstract: The effects of direct-aging and strain-aging on the precipitation behavior of second-phase, wear resistance and corrosion resistance were studied in a Fe14.51Mn6.02Si9.10Cr5.06Ni1.49Ti0.16C alloy. The results show that the wear resistance of solid-solution treated alloys was better than that of 1Cr18Ni9Ti stainless steel. The wear resistance of alloy could be improved by direct-aging and strain-aging, the latter was better, especially under the condition of heavy load. Compared with direct-aging, a lot of Cr23C6 phase precipitated in matrix besides σ phase after strain-aging, so corrosion resistance of the alloy became worse in NaCl solution after strain-aging, but unchanged in NaOH solution, and the direct-aging didn′t decreased corrosion resistance of the alloy obviously.

       

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