热处理工艺对20Cr14Co12Mo5轴承钢力学性能的影响
鲍俭
江阴兴澄特种钢铁有限公司
Effect of Heat Treatment on Mechanical Properties of Bearing Steel 20Cr14Co12Mo5
摘要 本文通过不同的热处理工艺制度，研究20Cr14Co12Mo5高性能轴承钢的组织以及硬度、冲击韧性、抗拉强度和屈服强度等力学性能的变化规律。研究表明：不同热处理工艺对材料显微组织与力学性质具有显著影响规律，在一定的热处理制度下，20Cr14Co12Mo5可达到表面硬度HRC51.0，σb～1840MPa,σ0.2～1410MPa,δ～17%,ψ～ 62.5%,Aku～75 J•cm-2,KIc～108MPa•m1/2 。
Abstract ：The relationship between microstructures and mechanical properties of bearing steel 20Cr14Co12Mo5 are researched with different heat treatment in this paper. The results show that microstructures and mechanical properties are influenced by heat treatment With different heat treatment, the mechanical properties of the bearing steel can obtain HRC 51.0, σb～1840MPa, σ0.2～1410MPa, δ～17%,ψ～ 62.5%,Aku～75 J•cm-2,KIc～108MPa•m1/2 .
收稿日期: 2008-12-03
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2010, Vol. 45 
