渗碳工艺对18CrNiMo7-6齿轮钢渗层组织的影响

doi:10.13251/j.issn.0254-6051.2025.06.041

金属热处理 ›› 2025, Vol. 50 ›› Issue (6): 270-275.DOI: 10.13251/j.issn.0254-6051.2025.06.041

渗碳工艺对18CrNiMo7-6齿轮钢渗层组织的影响

田学锋¹, 肖金¹, 宋小春²

1.广东松山职业技术学院先进制造学院, 广东韶关 512126;
2.华南理工大学机械与汽车工程学院, 广东广州 510641

收稿日期:2024-12-03 修回日期:2025-03-19 出版日期:2025-06-25 发布日期:2025-07-08
作者简介:田学锋(1974—),男,副教授,博士,主要研究方向为金属材料组织演变及成形工艺,E-mail: tianxuefeng05@163.com
基金资助:
国家自然科学基金(52001123);韶关市科技计划(210806154531768)

Effect of carburizing process on microstructure of carburied layer of 18CrNiMo7-6 gear steel

Tian Xuefeng¹, Xiao Jin¹, Song Xiaochun²

1. School of Advanced Manufacturing, Guangdong Songshan Polytechnic, Shaoguan Guangdong 512126, China;
2. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou Guangdong 510641, China

Received:2024-12-03 Revised:2025-03-19 Online:2025-06-25 Published:2025-07-08

摘要/Abstract

摘要： 以高性能18CrNiMo7-6齿轮钢为研究对象,对其进行不同渗碳温度和淬火方式的渗碳处理,采用金相显微镜、X射线衍射仪和硬度计对渗碳层组织和硬度进行表征。结果表明,在930~1020 ℃渗碳温度范围内,随着渗碳温度的升高,渗碳层深度由1.51 mm增加至2.23 mm,渗碳层的峰值硬度逐渐下降,930 ℃渗碳层峰值硬度最高,为751 HV0.2。随着渗碳温度的升高,碳化物、针状马氏体以及残留奥氏体均发生粗化,当渗碳温度超过990 ℃时粗化最为明显。渗碳后两次淬火处理试样中残留奥氏体含量较直接淬火处理降低了8%,渗碳层硬度由751 HV0.2提高到762 HV0.2,且渗碳层深度为1.53 mm,略大于直接淬火试样。综合考虑,18CrNiMo7-6钢渗碳温度不宜超过990 ℃,且优先选择两次淬火工艺。

关键词: 齿轮钢, 渗碳层, 渗碳温度, 淬火工艺, 组织, 硬度

Abstract: Taking high-performance 18CrNiMo7-6 gear steel as the research object, carburizing treatment was carried out at different carburizing temperatures and quenching methods. The microstructure and hardness of carburized layer were characterized by using metallographic microscope, X-ray diffractometer, and hardness tester. The results show that in the carburizing temperature range of 930-1020 ℃, with the increase of carburizing temperature, the depth of carburized layer increases from 1.51 mm to 2.23 mm, and the peak hardness of carburized layer decreases gradually. The peak hardness of carburized layer is the highest at 930 ℃, which is 751 HV0.2. With the increase of carburizing temperature, the carbides, acicular martensite and retained austenite all undergo coarsening. When the carburizing temperature exceeds 990 ℃, the coarsening is the most obvious. The content of retained austenite in the double quenched specimen after carburizing is 8% lower than that of the direct quenched specimen, the hardness of carburized layer increases from 751 HV0.2 to 762 HV0.2, and the depth of carburized layer is 1.53 mm, which is slightly greater than that of the direct quenched specimen. Overall consideration, the carburizing temperature of the 18CrNiMo7-6 steel should not exceed 990 ℃, and double quenching process is preferably selected.

Key words: gear steel, carburized layer, carburizing temperature, quenching process, microstructure, hardness

中图分类号:

TG142.1

田学锋, 肖金, 宋小春. 渗碳工艺对18CrNiMo7-6齿轮钢渗层组织的影响[J]. 金属热处理, 2025, 50(6): 270-275.

Tian Xuefeng, Xiao Jin, Song Xiaochun. Effect of carburizing process on microstructure of carburied layer of 18CrNiMo7-6 gear steel[J]. Heat Treatment of Metals, 2025, 50(6): 270-275.

参考文献

[1] 杨少朋, 胡芳忠, 尉文超, 等. Nb微合金化对渗碳齿轮钢组织演变及接触疲劳性能的影响[J]. 表面技术, 2022, 51(1): 358-367.
Yang Shaopeng, Hu Fangzhong, Yu Wenchao, et al. Effect of niobium microalloying on microstructure evolution and rolling contact fatigue properties of carburized gear steels[J]. Surface Technology, 2022, 51(1): 358-367.
[2] 陈立佳, 潘卫东, 耿新, 等. 稀土对渗碳层组织及性能的影响[J]. 沈阳工业大学学报, 1997, 19(2): 83-87.
Chen Lijia, Pan Weidong, Geng Xin, et al. Influence of rare-earth on microstructure and performance of carburized layer[J]. Journal of Shenyang University of Technology, 1997, 19(2): 83-87.
[3] 江志华, 佟小军, 孙枫, 等. 13Cr4Mo4Ni4VA钢复合化学热处理过程渗层组织性能演变[J]. 航空材料学报, 2011, 31(3): 40-45.
Jiang Zhihua, Tong Xiaojun, Sun Feng, et al. Evolution of microstructures and properties during duplex thermochemical processing of 13Cr4Mo4Ni4VA steel[J]. Journal of Aeronautical Materials, 2011, 31(3): 40-45.
[4] 陈德华, 滕鲁湘, 李光瑾, 等. 渗碳淬硬层残余应力的分布特征[J]. 热处理, 2011, 26(2): 65-71.
Chen Dehua, Teng Luxiang, Li Guangjin, et al. Distribution characteristics of residual stress in carburized and hardened case[J]. Heat Treatment, 2011, 26(2): 65-71.
[5] 陈玲, 魏沛堂, 刘怀举, 等. 齿轮接触疲劳微观结构作用研究综述[J]. 机械传动, 2022, 46(1): 1-18.
Chen Ling, Wei Peitang, Liu Huaiju, et al. Review on the effect of microstructure on gear contact fatigue[J]. Journal of Mechanical Transmission, 2022, 46(1): 1-18.
[6] 曹志刚, 刘世军, 李俞峰, 等. 渗碳淬火工艺齿轮内部残余应力状态有限元仿真研究[J]. 内燃机与配件, 2022(10): 17-19.
Cao Zhigang, Liu Shijun, Li Yufeng, et al. Finite element simulation research on internal residual stress state of carburizing and quenching gear[J]. Internal Combustion Engine and Parts, 2022(10): 17-19.
[7] 尚可超, 杨帅, 廖云鑫. 渗碳淬火工艺对齿轨轮残余应力和变形影响的仿真研究[J]. 煤矿机械, 2020, 41(1): 85-87.
Shang Kechao, Yang Shuai, Liao Yunxin. Simulation study on effect of carburizing and quenching on residual stress and deformation of coal-cutter gear[J]. Coal Mine Machinery, 2020, 41(1): 85-87.
[8] 康贺铭, 邓海龙, 李明凯, 等. 渗碳齿轮接触疲劳特性及寿命预测模型构建[J]. 制造技术与机床, 2022(8): 137-141.
Kang Heming, Deng Hailong, Li Mingkai, et al. Contact fatigue characteristics and life prediction model of carburized gear[J]. Manufacturing Technology and Machine Tool, 2022(8): 137-141.
[9] 吴吉展, 朱才朝, 魏沛堂, 等. 航空齿轮钢强化工艺与表面完整性关联规律研究[J]. 表面技术, 2024, 53(1): 153-168.
Wu Jizhan, Zhu Caizhao, Wei Peitang, et al. Correlation between strengthening process and surface integrity of aviation gear steel[J]. Surface Technology, 2024, 53(1): 153-168.
[10] 赵鑫. 齿轮钢18Cr2Ni4WA表面复合强化工艺设计及性能研究[D]. 哈尔滨: 哈尔滨工程大学, 2019.
Zhao Xin. Research on surface compound reinforcement technology design and performance of gear steel 18Cr2Ni4WA[D]. Harbin: Harbin Engineering University, 2019.
[11] 刘华松, 董延楠, 郑宏光, 等. Nb微合金化对齿轮钢高温渗碳奥氏体晶粒度的影响[J]. 钢铁研究学报, 2021, 33(8): 828-838.
Liu Huasong, Dong Yannan, Zheng Hongguang, et al. Influence of Nb microalloying on grain size of austenite in high-temperature carburized gear steel[J]. Journal of Iron and Steel Research, 2021, 33(8): 828-838.
[12] 谭克诚, 高祯云. 渗碳温度对齿轮钢组织及磨损性能的影响[J]. 铸造技术, 2015, 36(3): 641-643.
Tan Kecheng, Gao Zhenyun. Effects of carburizing temperature on performance of automobile gears[J]. Foundry Technology, 2015, 36(3): 641-643.
[13] 朱百智, 李小末, 张伟. 不同渗碳淬火模式下的18CrNiMo7-6钢晶粒度研究[J]. 金属加工(热加工), 2020(5): 24-27.
Zhu Baizhi, Li Xiaomo, Zhang Wei. Study on grain size of 18CrNiMo7-6 steel under different carburizing and quenching modes[J]. MW Metal Forming, 2020(5): 24-27.
[14] 秦盛伟, 邸黎寅, 王连翔, 等. 渗碳工艺对18CrNiMo7-6合金钢缺口件疲劳性能的影响[J]. 材料导报, 2024, 38(2): 204-210.
Qin Shengwei, Di Liyin, Wang Lianxiang, et al. Effect of carburizing on fatigue properties of notched 18CrNiMo7-6 alloy steel[J]. Materials Reports, 2024, 38(2): 204-210.
[15] 孙振淋, 张茜, 辛玉武, 等. 渗碳方式对18CrNi4A钢齿轮渗层的影响[J]. 金属热处理, 2015, 40(12): 128-131.
Sun Zhenlin, Zhang Qian, Xin Yuwu, et al. Effect of carburizing method on carburized layer of 18CrNi4A steel gear[J]. Heat Treatment of Metals, 2015, 40(12): 128-131.

渗碳工艺对18CrNiMo7-6齿轮钢渗层组织的影响

Effect of carburizing process on microstructure of carburied layer of 18CrNiMo7-6 gear steel

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	何肖飞, 陈武, 徐乐, 王文军. Cr-Ni-Mo系齿轮钢的淬透性及其影响因素[J]. 金属热处理, 2025, 50(6): 1-5.
[2]	孙小斌, 李杰, 曹炜鹏, 吴凯迪, 冯运莉. 间隙元素C对亚稳FeMnCoCrAl系高熵合金组织与力学性能的影响[J]. 金属热处理, 2025, 50(6): 6-11.
[3]	杨栋杰, 冯奕洁, 张宁, 蒋波. 微合金耐候钢的连续冷却转变及轧制温度对其组织与硬度的影响[J]. 金属热处理, 2025, 50(6): 18-26.
[4]	陶乐晓. 纳米陶瓷颗粒对超高强铝合金组织与性能的影响[J]. 金属热处理, 2025, 50(6): 27-31.
[5]	李阳, 张威. 钒对304N奥氏体不锈钢组织与力学性能的影响[J]. 金属热处理, 2025, 50(6): 32-37.
[6]	陈瑞, 陈保安, 李梦琳, 韩钰, 祝志祥, 杨长龙, 郑维刚, 夏霏霏. 退火态铝合金导体的压缩蠕变[J]. 金属热处理, 2025, 50(6): 54-58.
[7]	解炜, 张明玉, 梁飞龙, 岳旭, 张天蔚. 包覆叠轧工艺对TC4钛合金板材组织与力学性能的影响[J]. 金属热处理, 2025, 50(6): 67-72.
[8]	赵勇, 吴裕, 刘超红, 伍晓勇, 方忠强, 强瑞. 铸态U-10wt%Zr合金的微观组织及第二相[J]. 金属热处理, 2025, 50(6): 73-78.
[9]	郭斯源, 罗巍, 徐登伟, 张腾, 宋达, 师春生. 65Si2MnWA钢螺旋压缩弹簧的应力松弛行为与组织演变[J]. 金属热处理, 2025, 50(6): 89-94.
[10]	欧新哲, 马天军. N06625合金750 ℃长期时效后的组织与性能[J]. 金属热处理, 2025, 50(6): 102-106.
[11]	梁爽, 刘智鑫, 王锐琛, 刘丽荣. 晶体取向对Ni₃Al基单晶高温合金持久性能的影响[J]. 金属热处理, 2025, 50(6): 107-113.
[12]	朱冉冉, 杨书瑜, 宋炜, 成美贞, 顾凤仙, 朱雯, 韩逸. 显微组织对6061锻造轮毂表面切削性能的影响[J]. 金属热处理, 2025, 50(6): 114-118.
[13]	谢善, 任率, 林思宇. 1Cr16Co5Ni2MoWVNbN马氏体不锈钢锻件组织偏析原因分析[J]. 金属热处理, 2025, 50(6): 119-124.
[14]	王鑫奕, 玄伟东, 张诚江, 张翔宇, 余旭, 王保军, 屠挺生, 任忠鸣. 热等静压对镍基单晶高温合金CMSX-4组织与性能的影响[J]. 金属热处理, 2025, 50(6): 131-138.
[15]	花思明. 固溶温度对Cu-Cr-Zr合金组织与性能的影响[J]. 金属热处理, 2025, 50(6): 139-144.