Effect of (Ti, Mo)xC Particle Size on Wear Performance of High Titanium Abrasion-resistant Steel

Abstract

Particle-reinforced steels containing a high volume fraction of carbide, nitride, boride, and/or oxide particles have garnered increasing interest, because of their high specific modulus and strength, thermal stability, and excellent wear resistance.1–4) Similarly, TiC is attractive as a reinforcing material in particle-reinforced steel because of its low density (~4.93 g/cm3), high melting point (~3 430 K), extreme hardness (2 859–3 200 HV), high Young’s modulus (~440 GPa), and high resistance to oxidation and wear.5–8) There are two main ways to obtain a high volume fraction of TiC particles in an alloy: through liquid state processing or solid state processing. Solid state processing includes powder metallurgy, self-propagation high-temperature synthesis, mechanical alloying, and carbo-thermal reduction.9–14) Compared with solid state processing, liquid state processing has the advantage of ease and enabling the fabrication of larger ingots. The melt solidification processing methods that have been reported previously include the addition of TiC into Fe–C, addition of ferrotitanium into Effect of (Ti, Mo)xC Particle Size on Wear Performance of High Titanium Abrasion-resistant Steel