Abstract: The structure and properties of electroslag remelting steel Cr14Mo4(1.03C,14.36Cr,3.98Mo)Φ22 mm hot rolled products annealed at 750~950 ℃,quenched at 950～1200 ℃ and tempered at 450～550 ℃ have been studied. Results showed that HB hardness value of steel annealed at(890±20)℃ was 207~255;structure of steel quenched at 1100～1120 ℃ and tempered at 500~525℃ consisted of fine acicular tempered martensite,residual austenite and carbide with HRC hardness value 61 and fracture toughness K_IC value 31.5～32.1 MPa ·m^1/2;high temperature contact fatigue life L₁₀ of steel Cr14Mo4 at 200℃ was 1. 1×10⁵ and the steel Cr14Mo4 has higher wear resistance.

Key words: Stainless Bearing Steel Cr14Mo4,Heat Treatment, Structure,Mechanical Properties,High Temperature Contact Fatigue Life

摘要： 试验研究了电渣重熔Cr14Mo4钢(%:1.03C、14.36Cr、3.98Mo)Φ22mm热轧材750～950℃退火、950～1200℃淬火、450～550℃回火后钢的组织和性能。结果表明,(890±20)℃退火后钢的HB硬度值207～255;1100～1120℃淬火500～525℃四次回火后钢的组织由细针状回火马氏体、残余奥氏体和碳化物组成,HRC硬度值61,断裂韧性K_IC为31.5～32.1 MPa·m^1/2;Cr14Mo4钢200℃高温接触疲劳寿命L₁₀为1.1×10⁵,并且Cr14Mo4钢具有较好的耐磨性能。

关键词: 不锈轴承钢Cr14Mo4, 热处理, 组织, 机械性能, 高温接触疲劳寿命