| Effects of heat treatment on properties of multi-element low alloy wear-resistant steel |
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| 作者姓名： | *SONG Xu-ding FU Han-guang |
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| 作者单位： | 1. School of Mechanical Engineering，Chang'an University，Xi'an 710064，China; 2. School of Material Engineering，Xi'an jiaotong University，Xi’an 710000，China |
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| 摘 要： | The paper has studied the mechanical properties and heat treatment effects on multi-element low alloy wear-resistant steel (MLAWS) used as a material for the liner of rolling mill torii. The results show that when quenched at 900-920℃ and tempered at 350-370℃, the MLAWS has achieved hardness above 60 HRC, tensile strength greater than 1 600 MPa, impact toughness higher than 18J/cm2 and fracture toughness greater than 37 MPa·m1/2. When the quenching temperature is lower than 900℃, the hardness of the MLAWS increases with the temperature. When the quenching temperature is higher than 900℃, the hardness decreases with the increase of temperature. At a quenching temperature below 920℃, the effect of quenching temperature on the impact toughness is not obvious. In quenching at above 920℃, impact toughness decreases as the temperature increases. When the tempering temperature is exceeding 450℃, the hardness begins to decrease significantly. Tempering at 350℃ has produced the best wear resistance on the MLAWS.
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| 关 键 词： | 多元素 低合金钢 耐磨钢 热处理 机械性能 |
Effects of heat treatment on properties of multi-element low alloy wear-resistant steel |
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| SONG Xu-ding,FU Han-guang.Effects of heat treatment on properties of multi-element low alloy wear-resistant steel[J].China Foundry,2007,4(1):18-21. |
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| Authors: | SONG Xu-ding FU Han-guang |
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| Abstract: | The paper has studied the mechanical properties and heat treatment effects on multi-element low alloy wear-resistant steel (MLAWS) used as a material for the liner of rolling mill torii. The results show that when quenched at 900-920 ℃ and tempered at 350-370 ℃, the MLAWS has achieved hardness above 60 HRC, tensile strength When the quenching temperature is lower than 900℃, the hardness of the MLAWS increases with the temperature.When the quenching temperature is higher than 900℃, the hardness decreases with the increase of temperature. At a quenching temperature below 920℃, the effect of quenching temperature on the impact toughness is not obvious.In quenching at above 920℃, impact toughness decreases as the temperature increases. When the tempering temperature is exceeding 450℃, the hardness begins to decrease significantly. Tempering at 350℃ has produced the best wear resistance on the MLAWS. |
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| Keywords: | rolling mill torii liner heat treatment mechanical properties wear resistance |
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