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Study on Contact Fatigue Life and Failure Mechanism of Subquenched 42CrMo Steel 被引量：3

Study on Contact Fatigue Life and Failure Mechanism of Subquenched 42CrMo Steel
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摘要 The effect of undissolved ferrite amount in subcritically quenched 42CrMo steel on contact fatigue properties and failure mechanism were studied. The amount of undissolved ferrite in the steel were 0%,3%,10%,15% and 20% in volume fraction, respectively. The experimental results show that the existence of undissolved ferrite can increase the contact fatigue life The contact fatigue life can be prolonged with increasing the amounts of undissolved ferrite The grain size can be fined by using subcritical quenching process and the area of phase boundaries can also be greatly increased. The stress relaxation and grain refinement due to occurring of plastic deformation are main reasons for improving the fatigue life. The existence of undissolved ferrite can increase the crack initiation period. Under the experiment conditions, when the amount of undissolved ferrite is 10%, the longest contact fatigue life can be the obtained. The effect of undissolved ferrite amount in subcritically quenched 42CrMo steel on contact fatigue properties and failure mechanism were studied. The amount of undissolved ferrite in the steel were 0%,3%,10%,15% and 20% in volume fraction, respectively. The experimental results show that the existence of undissolved ferrite can increase the contact fatigue life The contact fatigue life can be prolonged with increasing the amounts of undissolved ferrite The grain size can be fined by using subcritical quenching process and the area of phase boundaries can also be greatly increased. The stress relaxation and grain refinement due to occurring of plastic deformation are main reasons for improving the fatigue life. The existence of undissolved ferrite can increase the crack initiation period. Under the experiment conditions, when the amount of undissolved ferrite is 10%, the longest contact fatigue life can be the obtained.
作者 HEBo-lin YUYing-xia SHAOEr-yu
机构地区 SchoolofMechanical＆ElectricalEngineering MaterialInstitute
出处 《材料热处理学报》 EI CAS CSCD 北大核心 2004年第5期260-262,共3页 Transactions of Materials and Heat Treatment
关键词 亚临界灭弧 接触疲劳 失效机理 铁素体 42CRMO钢 Subcritical quenching contact fatigue failure mechanism undissolved ferrite 42CrMo steel
分类号 TG113.255 [金属学及工艺—物理冶金] TG142.23 [金属学及工艺—金属材料]
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参考文献5

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同被引文献29

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引证文献3

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材料热处理学报
2004年 第5期

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