Effect of casting overheat and rolling temperature on morphology of sulfide in 30MnVS steel
Effect of superheat and initial rolling temperature on the morphology and distribution of sulfide in non quenched and tempered free cutting steel 30MnVS has been studied by optical microscope and scanning electron microscope. Results show that proper superheat and initial rolling temperature can turn rod-shaped sulfide into massive or globular sulfide, to alleviate sulfide segregation and pro-eutectoid ferrite distribution along the boundary of pearlite clusters in 30MnVS , increase the intragranular ferrite content and optimize the structure of continuous casting slab. Recent years, with the rapid development of automobile industry, the demand for special steel for automobiles is increasing. Cutting non-quenched and tempered steels are mainly used to manufacture cars in the connecting rod and crankshaft 1. The morphology of sulfide affects the cutting and mechanical properties of the steel significantly. The addition Ca can optimize the morphology and distribution of sulfides, thereby reducing the effect on the mechanical properties of steels 2-4. The present works focus on the effect of casting superheat and rolling temperature on the morphology of sulfide in 30MnVS.
30MnVS overheat rolling temperature sulfide
Yiyou Tu Guozhong Li
Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing 211189,China Xingcheng Iron and Steel Co. Ltd., Wuxi 214016, China
国际会议
沈阳
英文
270-273
2011-11-22（万方平台首次上网日期，不代表论文的发表时间）