论文部分内容阅读
在5Cr Mn Mo模具材料中添加了不同含量的纳米钒,并对材料的显微组织、耐磨损性、抗弯性能、高温抗氧化性能进行分析。结果表明,纳米钒的添加可有效细化材料的晶粒,提高耐磨损性能、抗弯性能和高温抗氧化性能。纳米钒的添加量优选为1.0%。与未添加纳米钒的5Cr Mn Mo模具材料相比,添加1.0%纳米钒可使材料25℃磨损体积减小72.7%、250℃磨损体积减小73.5%、500℃磨损体积减小77.6%、25℃抗弯强度增加28.1%、500℃×80 h高温氧化后单位面积质量增重减少89.6%。
In the 5Cr Mn Mo mold material, different content of nano-vanadium was added, and the microstructure, wear resistance, bending resistance and high temperature oxidation resistance were analyzed. The results show that the addition of nano-vanadium can effectively refine the grain of the material, improve the wear resistance, bending resistance and high temperature oxidation resistance. The amount of nano vanadium added is preferably 1.0%. Compared with 5CrMnMo without nano-vanadium, adding 1.0% nano-vanadium can reduce the wear volume of the material by 72.7% at 25 ℃, decrease the wear volume at 250 ℃ by 73.5% and decrease the wear volume at 500 ℃ by 77.6%, 25 The flexural strength increased by 28.1%. The mass weight gain per unit area decreased by 89.6% after high temperature oxidation at 500 ℃ for 80 h.