ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2007, Vol. 28 ›› Issue (6): 7-9.

• 试验研究 • 上一篇    下一篇

高温不锈轴承钢Cr14Mo4的热处理、组织和性能

魏果能, 许 达 ,俞 峰   

  1. 钢铁研究总院结构材料研究所,北京100081
  • 收稿日期:2007-05-09 出版日期:2007-12-01 发布日期:2022-12-26
  • 作者简介:魏果能(1940-),男,教授,1965年西安交通大学毕业,轴承材料和工艺研究。

Heat Treatment,Structure and Properties of High Temperature Stainless Bearing Steel Cr14Mo4

Wei Guoneng, Xu Da , Yu Feng   

  1. Structural Material Research Institute,Central Iron and Steel Institute,Beijing 100081
  • Received:2007-05-09 Published:2007-12-01 Online:2022-12-26

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KIC为31.5~32.1 MPa·m1/2;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

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 KIC value 31.5~32.1 MPa ·m1/2;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