带状组织对20CrMn齿轮钢端淬硬度的影响

doi:10.13251/j.issn.0254-6051.2025.05.020

金属热处理 ›› 2025, Vol. 50 ›› Issue (5): 124-131.DOI: 10.13251/j.issn.0254-6051.2025.05.020

带状组织对20CrMn齿轮钢端淬硬度的影响

赵昊, 刘新宽, 张柯, 马凤仓, 李伟, 刘平

上海理工大学材料与化学学院, 上海 200093

收稿日期:2024-12-24 修回日期:2025-03-09 发布日期:2025-06-25
通讯作者: 刘新宽,副教授,博士,E-mail:xinkuanliu@usst.edu.cn
作者简介:赵昊(2000—),男,硕士研究生,主要研究方向为带状组织对齿轮钢淬透性影响,E-mail:222203057@st.usst.edu.cn。

Influence of banded structure on Jominy end quenching hardness of 20CrMn gear steel

Zhao Hao, Liu Xinkuan, Zhang Ke, Ma Fengcang, Li Wei, Liu Ping

School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

Received:2024-12-24 Revised:2025-03-09 Published:2025-06-25

摘要/Abstract

摘要： 通过光学显微镜、扫描电镜和电感耦合等离子体高分辨双聚焦磁质谱仪研究了20CrMn齿轮钢的带状组织,分析了齿轮钢的端淬硬度波动和带状组织的关系。结果表明,齿轮钢中出现的带状组织使其端淬硬度出现条带状异常波动,同时出现硬度测量值偏高或者偏低的现象。带状组织的条带宽度标准差可以反应组织不均匀程度,并通过数据整理和拟合发现,带状组织中条带宽度标准差与测量的硬度波动呈多项式关系。

关键词: 20CrMn齿轮钢, 带状组织, 淬透性

Abstract: Banded structure in 20CrMn gear steel was studied by using optical microscopy, scanning electron microscopy and high-resolution double focusing magnetic sector mass spectrometer with inductively coupled plasma. The relationship between the Jominy end quenching hardness fluctuations of the steel and its banded structure was analyzed. The results show that the banded structure causes abnormal fluctuations in Jominy end quenching hardness, which exhibits either higher or lower hardness measurements simultaneously. The standard deviation of band width of the banded structure can reflect the degree of inhomogeneity of the microstructure. Through data processing and fitting analysis, it shows that there is a polynomial relationship between the standard deviation of band width of the banded structure and the measured hardness fluctuations.

Key words: 20CrMn gear steel, banded structure, hardenability

中图分类号:

TB403.4

赵昊, 刘新宽, 张柯, 马凤仓, 李伟, 刘平. 带状组织对20CrMn齿轮钢端淬硬度的影响[J]. 金属热处理, 2025, 50(5): 124-131.

Zhao Hao, Liu Xinkuan, Zhang Ke, Ma Fengcang, Li Wei, Liu Ping. Influence of banded structure on Jominy end quenching hardness of 20CrMn gear steel[J]. Heat Treatment of Metals, 2025, 50(5): 124-131.

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带状组织对20CrMn齿轮钢端淬硬度的影响

Influence of banded structure on Jominy end quenching hardness of 20CrMn gear steel

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