回火温度对U20Mn贝氏体轨钢耐磨性的影响

doi:10.13251/j.issn.0254-6051.2025.08.020

金属热处理 ›› 2025, Vol. 50 ›› Issue (8): 118-126.DOI: 10.13251/j.issn.0254-6051.2025.08.020

回火温度对U20Mn贝氏体轨钢耐磨性的影响

高超¹, 王旭¹, 蒋宏利², 王东梅¹, 岑耀东¹, 陈林¹

1.内蒙古科技大学材料科学与工程学院, 内蒙古包头 014010;
2.鞍钢股份有限公司鲅鱼圈钢铁分公司, 辽宁营口 115007

收稿日期:2025-03-03 修回日期:2025-06-20 出版日期:2025-08-25 发布日期:2025-09-10
通讯作者: 陈林,教授,硕士,E-mail:chenlin39805@163.com
作者简介:高超(1998—),男,硕士研究生,主要研究方向为钢轨热处理及其性能,E-mail:192916914@qq.com。
基金资助:
国家自然科学基金(52164046);内蒙古自治区重点研发和成果转化计划(2023YFHH0036)

Effect of tempering temperature on wear resistance of U20Mn bainitic rail steel

Gao Chao¹, Wang Xu¹, Jiang Hongli², Wang Dongmei¹, Cen Yaodong¹, Chen Lin¹

1. School of Materials Science and Engineering, Inner Mongolia University of Science and Technology, Baotou Inner Mongolia 014010, China;
2. Bayuquan Branch of Angang Steel Co., Ltd., Yingkou Liaoning 115007, China

Received:2025-03-03 Revised:2025-06-20 Online:2025-08-25 Published:2025-09-10

摘要/Abstract

摘要： 对淬火态U20Mn贝氏体轨钢在280~420 ℃温度区间进行回火,并对回火后的轨钢进行耐磨性测试,探索回火温度对轨钢显微组织、强度、韧性、硬度以及耐磨性的影响。结果表明,经280 ℃与340 ℃回火后,贝氏体轨钢具有更高的强度、冲击吸收能量与硬度,耐磨性测试表现出磨损量较低、表层疲劳裂纹尺寸较小、剥落坑较少、塑性变形层厚度较小等特点。回火温度在280~340 ℃区间,U20Mn贝氏体轨钢可获得最佳强韧性匹配与较好的抗接触疲劳性能及耐磨性。

关键词: 贝氏体轨钢, 回火, 显微组织, 耐磨性, 滚动接触疲劳性能

Abstract: Tempering in the temperature range of 280-420 ℃ was conducted to quenched U20Mn bainitic rail steel, and wear resistance tests of the tempered rail steel were carried out to explore the effect of tempering temperature on the microstructure, strength, toughness, hardness, and wear resistance of the rail steel. The results show that the bainitic rail steel tempered at temperatures of 280 ℃ and 340 ℃, respectively, obtains higher strength, impact absorbed energy, and hardness, and the wear resistance tests show lower wear loss, smaller surface fatigue crack size, fewer peeling pit, and thinner plastic deformation layer. It is indicated that the U20Mn bainitic rail steel tempered between 280 ℃ and 340 ℃ can achieve the best strength toughness matching, good contact fatigue resistance and wear resistance.

Key words: bainite rail steel, tempering, microstructure, wear resistance, rolling contact fatigue property

中图分类号:

U213.4⁺2

高超, 王旭, 蒋宏利, 王东梅, 岑耀东, 陈林. 回火温度对U20Mn贝氏体轨钢耐磨性的影响[J]. 金属热处理, 2025, 50(8): 118-126.

Gao Chao, Wang Xu, Jiang Hongli, Wang Dongmei, Cen Yaodong, Chen Lin. Effect of tempering temperature on wear resistance of U20Mn bainitic rail steel[J]. Heat Treatment of Metals, 2025, 50(8): 118-126.

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回火温度对U20Mn贝氏体轨钢耐磨性的影响

Effect of tempering temperature on wear resistance of U20Mn bainitic rail steel

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