高碳铬轴承钢100CrMnSi6-4的动态连续冷却转变行为

doi:10.13251/j.issn.0254-6051.2025.10.013

金属热处理 ›› 2025, Vol. 50 ›› Issue (10): 87-92.DOI: 10.13251/j.issn.0254-6051.2025.10.013

高碳铬轴承钢100CrMnSi6-4的动态连续冷却转变行为

王焕章¹, 吕艳¹, 倪益华¹, 倪忠进¹, 韩陈哲¹, 芦荣培¹, 刘凯²

1.浙江农林大学光机电工程学院, 浙江杭州 311300;
2.浙江金沃股份有限公司, 浙江衢州 324000

收稿日期:2025-05-09 修回日期:2025-08-25 出版日期:2025-10-25 发布日期:2025-11-04
通讯作者: 吕艳,副教授,博士,E-mail:yan.lv@outlook.com
作者简介:王焕章(1998—),男,硕士研究生,主要研究方向为钢的组织性能调控,E-mail:793071374@qq.com。
基金资助:
浙江省 “尖兵”“领雁”研发攻关计划(2023C01248)

Dynamic continuous cooling transformation behavior of high carbon chromium bearing steel 100CrMnSi6-4

Wang Huanzhang¹, Lü Yan¹, Ni Yihua¹, Ni Zhongjin¹, Han Chenzhe¹, Lu Rongpei¹, Liu Kai²

1. College of Optoelectronics and Mechanical Engineering, Zhejiang A&F University, Hangzhou Zhejiang 311300, China;
2. Zhejiang Jinwo Co., Ltd., Quzhou Zhejiang 324000, China

Received:2025-05-09 Revised:2025-08-25 Online:2025-10-25 Published:2025-11-04

摘要/Abstract

摘要： 利用Gleeble-3500热模拟机测试了100CrMnSi6-4轴承钢在变形条件下的动态连续冷却转变(CCT)行为,分析了冷却速度对其组织演变和硬度的影响规律,结合热膨胀法绘制了100CrMnSi6-4轴承钢的动态CCT曲线。结果表明,100CrMnSi6-4轴承钢的相变温度为Ac₁=766 ℃,Ac_cm=823 ℃,在高温状态单道次压缩的试验条件下,当冷却速度低于1 ℃/s时,试验钢组织主要为珠光体和先共析渗碳体组织;当冷却速度升至1.5 ℃/s时,开始出现马氏体组织,在1.5~5 ℃/s冷速区间内,试验钢组织为珠光体+马氏体,先共析渗碳体含量显著减少;当冷却速度超过8 ℃/s时,试验钢组织几乎为马氏体组织。硬度随冷速的增加而增加。

关键词: 100CrMnSi6-4轴承钢, 动态CCT曲线, 显微组织, 硬度

Abstract: Dynamic continuous cooling transformation (CCT) behavior of 100CrMnSi6-4 bearing steel under deformation conditions was tested using a Gleeble-3500 thermal simulator. The influence of cooling rate on microstructural evolution and hardness was analyzed, and the dynamic CCT curve of the 100CrMnSi6-4 bearing steel was plotted combined with the thermal dilatometric method. The results show that the critical temperatures Ac₁ and Ac_cm of the 100CrMnSi6-4 bearing steel are 766 ℃ and 823 ℃, respectively. Under the experimental condition of single-pass compression at high temperature, when the cooling rate is below 1 ℃/s, the microstructure of the tested steel is mainly composed of pearlite and proeutectoid cementite. When the cooling rate increases to 1.5 ℃/s, martensite appears inside the tested steel. Within the cooling rate range of 1.5-5 ℃/s, the microstructure of the tested steel is pearlite+martensite, and the content of proeutectoid cementite significantly decreases. When the cooling rate exceeds 8 ℃/s, the microstructure of the tested steel is almost martensite. The hardness increases with the increase of cooling rate.

Key words: 100CrMnSi6-4 bearing steel, dynamic CCT curves, microstructure, hardness

中图分类号:

TG156.1

王焕章, 吕艳, 倪益华, 倪忠进, 韩陈哲, 芦荣培, 刘凯. 高碳铬轴承钢100CrMnSi6-4的动态连续冷却转变行为[J]. 金属热处理, 2025, 50(10): 87-92.

Wang Huanzhang, Lü Yan, Ni Yihua, Ni Zhongjin, Han Chenzhe, Lu Rongpei, Liu Kai. Dynamic continuous cooling transformation behavior of high carbon chromium bearing steel 100CrMnSi6-4[J]. Heat Treatment of Metals, 2025, 50(10): 87-92.

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高碳铬轴承钢100CrMnSi6-4的动态连续冷却转变行为

Dynamic continuous cooling transformation behavior of high carbon chromium bearing steel 100CrMnSi6-4

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