Nb-V微合金化对弹簧钢60Si2MnA表面脱碳的影响
Effects of Nb-V Micro-alloying on Surface Decarburization of Spring Steel 60Si2MnA
姜 超, 刘雅政, 张朝磊, 肖金福
点击：3162次 下载：0次
作者单位：(北京科技大学 材料科学与工程学院, 北京 100083)
中文关键字：弹簧钢； 微合金化； 扩散； 脱碳敏感性
英文关键字：spring steel; micro-alloying; diffusion; decarburization sensitivity
中文摘要：研究了Nb-V复合微合金化、加热温度和保温时间对弹簧钢60Si2MnA表面脱碳行为的影响，并运用Fick第二定律讨论了脱碳层深度与温度、时间之间的定量关系，探讨了Nb-V降低60Si2MnA表面脱碳敏感性的机理。结果表明，等温处理或等时处理，60Si2MnA的脱碳层深度的实测值和基于扩散方程的计算值具有较好的一致性，Nb-V复合微合金化可以明显降低弹簧钢60Si2MnA的脱碳敏感性。
英文摘要：The effects of Nb-V addition, heating temperature and holding time on surface decarburization of spring steel 60Si2MnA were studied. And the relationship between the decarburization layer depth and heating temperature, holding time was discussed using fick's second law. Besides, the mechanism of Nb-V on reducing surface decarburization of spring steel 60Si2MnA was investigated. The results show that the calculation results based on the diffusion equation are coincident with the measured data, and Nb-V addition can decrease the decarburization sensitivity under the condition of isothermal or equi-time heat treatment.