Wear resistance of TiC particle reinforced low alloy ferritic wear-resistant steel

doi:10.13251/j.issn.0254-6051.2020.02.011

Abstract

Abstract:

Compared with the traditional low alloy ferritic steel, the abrasive wear resistance of 1.0vol% TiC particle-reinforced ferritic wear resistant steel prepared by in situ synthesis technique was studied. OM, SEM and EDS were used to analyze the microstructure morphology and distribution of precipitated particles in the tested steel, and the mechanical properties and wear resistance of the tested steel were analyzed and tested. The results show that the rolled TiC particles are evenly distributed in the tested steel. Nano-TiC particles have obvious precipitation strengthening effect, which improves the strength and hardness of the matrix and ensures good bending properties. TiC particles with size of 1-5 μm effectively hinder the plough-grinding effect of abrasive particles and improve the abrasive wear resistance. The wear weight loss of TiC-reinforced ferritic tested steel is only 60% of that of non-reinforced ferritic steel, which is equivalent with the wear resistance of unreinforced ferritic steel after quenching and tempering. The abrasive wear mechanism of TiC-reinforced ferritic tested steel includes both plow type abrasive wear and micro-cutting mechanism, which means that the improvement of wear resistance of the steel can be attributed to the combined action of nano-TiC and micro-TiC particles.

Key words: particle-reinforced ferritic wear-resistant steel, TiC particles, wear resistance, abrasive wear

CLC Number:

TG142.72

Liu Luojin, Sun Xinjun, Liang Xiaokai, Ye Xiaoyu. Wear resistance of TiC particle reinforced low alloy ferritic wear-resistant steel[J]. HTM, 2020, 45(2): 56-60.

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