Study on Performance of TiC Particle Reinforced Martensite Wear-resistant Steel

TiC particle reinforced martensite wear-resistant steels with a hardness of HB450 were fabricated by mold casting and continuous casting processes.The principal of precipitation of TiC in experimental steels was studied.The microstructures and mechanical and wear-resistant properties of obtained steel were analyzed and compared with that of traditional martensite wear-resistant steels.It is found out that a higher solidification rate of continuous casting resulted in finer micron-sized TiC precipitates.In addition,a larger deformation ratio resulted in a more homogeneous distribution of TiC particles. Uniformly distributed micron-sized TiC particles could passivate the tip of the grains and stop scratches,which improved the wear resistant property of steels significantly,and reduced the weight loss to 70% compared with the traditional martensite wear resistant steels.