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两种多元合金耐磨钢的强韧化研究 被引量:3

Research on Strengthening and Toughening of Two Wear Resistant Multi-Element Alloy Steel
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摘要 探究了热处理工艺对多元低、中碳中合金耐磨铸钢组织和性能的影响,特别分析了它们的强韧化机理。结果表明,低碳合金钢经945℃淬火、280℃回火后硬度值为49 HRC以上,韧性值超过224 J/cm2;中碳合金钢经945℃淬火、370℃回火后硬度值达48.6 HRC,韧性值90 J/cm2左右。两种材料具有较好的回火稳定性,基体组织主要是板条状马氏体,马氏体板条间少量薄膜状的残余奥氏体,以及界面上弥散的碳化物起到强韧化作用,材料综合性能表现良好。 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/cm^2; 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/cm^2. 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.
出处 《铸造技术》 CAS 北大核心 2012年第3期304-307,共4页 Foundry Technology
关键词 多元合金耐磨钢 冲击韧度 热处理 马氏体 impact toughness heat treatment wear resistant steel martensite
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