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对新型00Cr18Mn15Mo2N0.9高氮无镍不锈钢进行不同变形量的冷轧处理,研究了高氮无镍不锈钢的冷变形性能以及冷变形对其摩擦磨损性能的影响。结果表明,高氮无镍不锈钢的奥氏体组织稳定,即使发生60%的冷变形也不产生形变马氏体;随着冷变形量的增加,高氮无镍不锈钢的强度、硬度提高,断后延伸率、加工硬化指数逐渐减小。在2、5和10 N载荷作用下,00Cr18Mn15Mo2N0.9高氮无镍不锈钢的磨损速率随着冷变形量的增加呈现先减小后增加的趋势,且载荷为2 N和5 N时在20%变形量处高氮无镍不锈钢具有最佳耐磨性,载荷为10 N时40%变形态高氮无镍不锈钢的耐磨性最佳。同时,随着冷变形程度和载荷的增加,00Cr18Mn15Mo2N0.9高氮无镍不锈钢的磨损机制逐渐由磨粒磨损、氧化磨损和脆性剥落转变为磨粒磨损和脆性剥落。
The cold deformation of the new 00Cr18Mn15Mo2N0.9 high nitrogen and nickel-free stainless steel with different deformation was studied. The cold deformation performance and cold deformation of the high nitrogen and nickel-free stainless steel were investigated. The results show that the austenite structure of high nitrogen and nickel-free stainless steel is stable and does not produce deformed martensite even after 60% cold deformation. With the increase of cold deformation, the strength and hardness of high nitrogen and nickel-free stainless steel increase, Elongation, work hardening index gradually reduced. Under the loads of 2, 5 and 10 N, the wear rate of 00Cr18Mn15Mo2N0.9 high nitrogen and nickel-free stainless steel first decreased and then increased with the increase of cold deformation, and at 20% High-nitrogen, nickel-free stainless steel at the amount of deformation has the best wear resistance, 40% at 10 N load High nitrogen-free, nickel-free stainless steel offers the best wear resistance. At the same time, with the increase of cold deformation and load, the wear mechanism of 00Cr18Mn15Mo2N0.9 high nitrogen and nickel-free stainless steel gradually changes from abrasive wear, oxidative wear and brittle flaking to abrasive wear and brittle flaking.