摘要
弹簧钢60Si2Mn在热处理过程中会发生脱碳.由于脱碳会严重影响零件的使用性能,因此可采用喷丸的方法来提高零件的使用性能,喷丸在材料表面产生的残余应力是二维的.基于此,讨论了喷丸强化对脱碳表层的影响,利用X射线应力分析技术及Mises等效应力法,可测得弹簧钢60Si2Mn脱碳表层在喷丸前后的屈服强度.实验结果表明,喷丸试样的表面屈服强度比未喷丸试样的表面屈服强度有了很大的提高,这说明了喷丸可以改善脱碳零件的性能.
The spring steel 60 Si2Mn will be decarburized in heating process, and decarburiz, ation will reduce the performance of the machine parts. The general method of shot peening improves the fatigue performance of the decarburized machine parts, and the residual stress produced by shot peening is planar. For the sake of discussion of the influence of shot peening on the decarburized surface layer, the X-ray stress analysis technique and Mises effective stress method can be used to measure the yield strength of the decarburized layer of the spring steel 60Si2Mn before and after shot peening. The results indicated that the yield strength of shot peening surfaces was greatly improved when compared with that of unpeened surfaces. This fact pointed out that the shot peening can improve the performance of the machine parts.
出处
《兰州理工大学学报》
CAS
北大核心
2006年第2期28-30,共3页
Journal of Lanzhou University of Technology
基金
国家自然科学基金(59371037)
关键词
弹簧钢
脱碳
喷丸
应力
屈服强度
spring steel
decarburization
shot peening
stress
yield strength
