2012•Rejiagong gongyiRequires access
Research on Strengthening and Toughening of Two Wear Resistant Multi-Element Alloy Steel
Xiaoxue Zhang
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Abstract
The influence of heat treatment processs on the microstructure and properties of multi-element low and medium carbon alloy steel was studied,especially the mechanism of strengthening and toughening.The results show that,after quenching at 945 ℃ and tempering at 280 ℃,the hardness of low carbon alloy steel exceeds 49 HRC and the impact toughness is above 224 J/cm2;after quenching at 945 ℃ and tempering at 370 ℃,medium carbon alloy steel has good comprehensive mechanical properties with hardness 48.6 HRC and impact toughness about 90 J/cm2.Two kinds of material have good temper stability and comprehensive mechanical properties.The microstructure consists of tempered martensite,a small amount of residual austenite disperses between martensite laths and carbide to strengthen and toughen their matrix.