Effect of isothermal quenching methods on impact toughness and wear resistance in high boron steel

Abstract

Effect of isothermal quenching methods on impact toughness and wear resistance in high borons teelIsothermal quenching methodswere applied to highboron steel for improving the impact toughness and wear resistance. The effect of different heat treatment processes on the microstructure and mechanical properties was studied. Each of the specimens was characterized using metallographictechniques, scanning electronic microscope, energy dispersives pectroscopy, X-ray diffraction, toughness and hardness testing. The results indicate that the as-cast high boron steel consistso fp earlite matrix and eutectic boride M 2 Ba nd Fe 3 (C, B) type distributing along grain boundaries. After isothermal quenching, the matrix of highboron steel is changed from pearlite to martensite and lower bainite. The impact toughness and wear resistance of high boron steel after isothermal quenching are better than that of high boronsteel after water quenching.

Effect of Quenching Process on Microstructure and performance of High-Boron High-Speed Steel

“…In recent years, high boron wear-resistant alloy has been widely concerned in the world [4][5][6]. High boron wear-resistant materials have been extensively and deeply studied, and breakthroughs have been made in the application of high boron wear-resistant steel in the manufacture of new generation of wear-resistant materials [7,8]. The borocarbide has high hardness and good thermal stability.…”