On the role of grain size on slurry erosion behavior of a novel medium-carbon, low-alloy pipeline steel after induction hardening

Grain refinement has been widely used to enhance the hardness and toughness properties of metallic materials. However, effect prior austenite grain on final martensitic microstructure wear performance steels is not yet fully understood. In this study, induction hardening treatment with heating rates in range 50–500 °C/s peak temperatures 900 1000 °C followed by water quenching employed produce through-hardened microstructures a new medium-carbon, low-alloy steel intended as slurry transportation pipeline material. The results revealed that achieved size i.e. 2-15 ?m, during different paths, experienced only slight difference blocks level hardness. mean hardness, homogeneity, structure uniformity were highest rate 50 °C/s, especially for those samples which re-austenitized at temperature °C. A pin-mill type high-speed slurry-pot tester was evaluate erosion behavior steel. It found above-mentioned had no significant value, however, martensite block did notably influence work consequently mechanism tests.