淬火冷速对过共析轨钢中珠光体组织的影响

doi:10.13251/j.issn.0254-6051.2021.03.003

金属热处理 ›› 2021, Vol. 46 ›› Issue (3): 12-16.DOI: 10.13251/j.issn.0254-6051.2021.03.003

淬火冷速对过共析轨钢中珠光体组织的影响

王东梅^1,2, 赵磊城³, 陈林¹, 包喜荣¹, 郭瑞华¹

1.内蒙古科技大学材料与冶金学院, 内蒙古包头 014010;
2.内蒙古自治区新金属材料重点实验室, 内蒙古包头 014010;
3.内蒙古第一机械集团股份有限公司第三分公司, 内蒙古包头 014030

收稿日期:2020-09-26 出版日期:2021-03-25 发布日期:2021-05-08
通讯作者: 陈林,教授,E-mail:chenlin39805@163.com
作者简介:王东梅(1985—),女,讲师,博士,主要研究方向为先进钢铁结构材料组织和性能以及新一代钢轨开发及钢轨组织性能控制,E-mail:wangdm6@126.com。
基金资助:
内蒙古自治区自然科学基金(2020BS05035);内蒙古科技大学创新基金(2019QDL-B04);内蒙古自治区科技重大专项(ZDZX2018024);内蒙古自治区科技创新引导项目(第三代高强度重载耐磨热处理钢轨关键技术研究及应用)

Effect of quenching cooling rate on pearlite microstructure ofhypereutectoid rail steel

Wang Dongmei^1,2, Zhao Leicheng³, Chen Lin¹, Bao Xirong¹, Guo Ruihua¹

1. School of Materials and Metallurgical, Inner Mongolia University of Science & Technology, Baotou Inner Mongolia 014010, China;
2. Key Laboratory of New Metal Materials of Inner Mongolia Autonomous Region, Baotou Inner Mongolia 014010, China;
3. The Third Branch of Inner Mongolia First Machinery Group Co., Ltd., Baotou Inner Mongolia 014030, China

Received:2020-09-26 Online:2021-03-25 Published:2021-05-08

摘要/Abstract

摘要： 采用OM、SEM以及硬度测试等方法研究了淬火工艺中冷却速率对过共析轨钢珠光体组织特征的影响规律。结果表明,随着冷却速率的提高,珠光体片层间距和渗碳体厚度均逐渐减小,分别由302 nm和43.6 nm减小到205 nm和29.2 nm。珠光体片层间距的细化对硬度提高起到了一定作用,使其由286 HV提高到了348 HV。

关键词: 过共析轨钢, 冷却速率, 珠光体片层间距, 细化

Abstract: Effect of cooling rates on pearlite microstructure characteristics of the hypereutectoid rail steel in the quenching process was investigated by means of OM, SEM and hardness testes. The results show that with the increase of cooling rates, the pearlite interlamellar spacing and cementite thickness decrease from 302 nm and 43.6 nm to 205 nm and 29.2 nm, respectively. Moreover, the refined pearlite interlamellar spacing acts on the enhancement of hardness from 286 HV to 348 HV.

Key words: hypereutectoid rail steel, cooling rates, pearlite interlamellar spacing, refinement

中图分类号:

TG142.21

王东梅, 赵磊城, 陈林, 包喜荣, 郭瑞华. 淬火冷速对过共析轨钢中珠光体组织的影响[J]. 金属热处理, 2021, 46(3): 12-16.

Wang Dongmei, Zhao Leicheng, Chen Lin, Bao Xirong, Guo Ruihua. Effect of quenching cooling rate on pearlite microstructure ofhypereutectoid rail steel[J]. Heat Treatment of Metals, 2021, 46(3): 12-16.

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淬火冷速对过共析轨钢中珠光体组织的影响

Effect of quenching cooling rate on pearlite microstructure ofhypereutectoid rail steel

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