中文摘要：

研究了直接时效和形变时效对Fel4．51Mn6．02Si9．10Cr5．06Nil．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1Crl8Ni9Ti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a相外还析出了大量的CrzsCs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。

英文摘要：

The effects of direct-aging and strain-aging on the precipitation behavior of second-phase, wear resistance and corrosion resistance were studied in a Fel4. 51Mn6. 02Si9. 10Cr5. 06Nil. 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 Cr23 C4 phase precipitated in matrix besides o phase after strain-aging, so corrosion resistance of the alloy became worse in NaC1 solution after strainaging, but unchanged in NaOH solution, and the direct-aging didn＇t decreased corrosion resistance of the alloy obviously.