Effects of Rare Earths on Inclusion Distribution and Modality of 8Cr4MoV Cold Work Roll Cast Steel
A study of rare earth effects on inclusion modality of 8Cr4MoV cold work roll steels was carried out in the laboratory, the steels smelting by a 50kg vacuum induction furnace, atmospheric casting, processing sample after annealing, then inspecting the steels”microstructure, inclusion modality and composition; The results showed that the steels” microstructure fine, micro-hardness increased with increasing rare earth content, while the average size of inclusions decreased significantly, also the morphology and composition of inclusions significantly changed from the angular black manganese sulfide to the ball white sulfur oxides of rare earth, and thus played roles of deoxidation, destulfufization, purification and deterioration of liquid steel, it will help improving the fatigue performance of the work roll.
arc earth 8Cr4MoV cast steel microstructure inclusion
WU Guosheng LI Xiao
Research and Development Center of WISCO, Wuhan Hubei 430080, China Science and Technology Department of Wuhan Engineering Institute, Wuhan Hubei 430080, China
国内会议
西安
英文
165-170
2013-10-25（万方平台首次上网日期，不代表论文的发表时间）