Aging Behavior of Boron Bearing Low Carbon Steel with Various Copper Contents
The aging effect for boron-bearing low carbon steels with varying copper content has been investigated.Through the microhardness measurement and optical and TEM microscopes,the evolutions of microstructure of the tested steels were analyzed in details and the interaction between various aging processes,microhardness,precipitation and boron content were obtained.The result revealed that the aging can be attributed to interaction between precipitation hardening and microstructure tempering.As the aging temperature rises,the peak of precipitation for the tested steels has been found to vary from double to single and even to no occurrence of peak.It has been further uncovered that the replacement of a proportion of copper by boron does not affect the microhardness obviously.Therefore,it can concluded that the composite effect of boron and copper in low-carbon steels stabilizing martensitic matrix more effectively than that only with copper addition,eventually pinning the appearance of the soft effect.
boron copper low carbon steel aging e-Cu precipitation
Zhang Zhihong Xue Xiangxin
Institute of Metallurgical Resources and Environmental Engineering, Northeastern University, Liaoning Key Laboratory of Metallurgical Resources Circulation Science, Liaoning Engineering Technology Research Center of Comprehensive Utilization of Boron Resources, Liaoning University Key Laboratories of Ecological Utilization Technology of Boron Resources and Boron Materials, Shengyang 110819, China
国际会议
The 4th Australia-China-Japan Joint Symposium on Iron and Steelmaking(第四届中日澳钢铁冶金学术会议)
沈阳
英文
306-309
2012-11-03（万方平台首次上网日期，不代表论文的发表时间）