摘要:
在40Cr模具钢中添加不同含量的合金元素钒,进行了模具钢显微组织、室温冲击性能和耐磨损性能的测试、比较和分析。结果表明:适当地添加钒,能够改善40Cr模具钢试样的显微组织,增加冲击吸收功,减小磨损体积,提高冲击性能和耐磨损性能。与不含钒相比较,0.25%、0.5%、0.75%钒含量下试样的冲击吸收功分别提升了6.25%、16.67%、12.5%,磨损体积分别锐减了12.5%、26.92%、24.04%。当钒含量为0.5%时,试样的冲击吸收功最大,磨损体积最小,具有最佳冲击性能和耐磨损性能。从提高冲击性能和耐磨损性能出发,40Cr模具钢中钒含量优选0.5%。
Abstract:
Various contents of vanadium were added to 40 Cr die steel,and the microstructure,impact property at room temperature and wear resistance of the die steels were tested,compared and analyzed.The results show that proper addition of vanadium can improve the microstructure,increase impact absorption energy,reduce wear volume,improve impact property and wear resistance of 40 Cr die steel samples.Compared with the steel without vanadium,the impact absorption energy is separately increased by 6.25%,16.67% and 12.5%,and the wear volume is respectively decreased by 12.5%,26.92% and 24.04% for the sample with 0.25%,0.5% and 0.75% of vanadium,respectively.When the vanadium content is 0.5%,the impact absorption energy of the sample is the largest,and the wear volume is the smallest,with the best impact performance and wear resistance.The vanadium content in 40 Cr die steel is optimized at 0.5%.
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