钛改性离子渗氮处理对沉淀硬化钢性能的影响

doi:10.13251/j.issn.0254-6051.2024.08.032

金属热处理 ›› 2024, Vol. 49 ›› Issue (8): 183-188.DOI: 10.13251/j.issn.0254-6051.2024.08.032

钛改性离子渗氮处理对沉淀硬化钢性能的影响

李峰^1,2

1.东华大学机械工程学院, 上海 201620;
2.郑机所(郑州)传动科技有限公司, 河南郑州 450002

收稿日期:2024-04-22 修回日期:2024-06-18 出版日期:2024-08-25 发布日期:2024-09-27
作者简介:李峰(1979—),男,高级工程师,博士研究生,主要研究方向为机械设计制造与工艺研究,E-mail:lifeng715tt@163.com
基金资助:
工业和信息化部盾构/TBM关键核心零部件开发及应用项目

Effect of Ti-modified plasma nitriding on properties of precipitation-hardened steel

Li Feng^1,2

1. School of Mechanical Engineering, Donghua University, Shanghai 201620, China;
2. ZRIME Gearing Technology Co., Ltd., Zhengzhou Henan 450002, China

Received:2024-04-22 Revised:2024-06-18 Online:2024-08-25 Published:2024-09-27

摘要/Abstract

摘要： 以沉淀硬化钢20CrNi3Mn2Al为对象,对其进行有无Ti离子参与的离子渗氮处理(渗氮温度为540 ℃,渗氮时间为48 h,渗剂为热分解NH₃),并对离子渗氮后的渗层硬度、有效渗氮层深度、摩擦磨损性能和腐蚀性能进行对比分析,研究了钛改性离子渗氮处理对沉淀硬化钢性能的影响。结果表明,较常规离子渗氮,Ti改性离子渗氮试样有效渗氮层深度提高约15%,硬度梯度较平缓;摩擦磨损后的划痕最大深度为8.894 μm,腐蚀后的坑洞深度约9 μm,较常规离子渗氮试样分别减小约45%和36%,耐磨性和耐蚀性显著提升。

关键词: 钛改性离子渗氮, 沉淀硬化钢, 渗氮层深, 硬度, 耐磨性, 耐蚀性

Abstract: Plasma nitriding treatment for precipitation-hardened steel 20CrNi3Mn2Al was carried out with or without Ti (nitriding at 540 ℃ for 48 h with the infiltration agent of thermal decomposition NH₃). Then the hardness, effective nitrided layer depth, friction and wear performance, and corrosion performance of the nitrided layer after plasma nitriding were compared and analyzed, and the effect of Ti-modified plasma nitriding on properties of precipitation-hardened steel was studied. The results show that compared with conventional ion nitriding, the effective nitrided layer depth of Ti-modified ion nitriding specimen is increased by about 15%, and the hardness gradient is smoother. The maximum depth of scratches after friction and wear is 8.894 μm, and the depth of pits after corrosion is about 9 μm, which is reduced by about 45% and 36% compared to conventional plasma nitriding specimen, respectively. The wear resistance and corrosion resistance are significantly improved.

Key words: Ti-modified plasma nitriding, precipitation-hardened steel, nitrided layer depth, hardness, wear resistance, corrosion resistance

中图分类号:

TG156.8

李峰. 钛改性离子渗氮处理对沉淀硬化钢性能的影响[J]. 金属热处理, 2024, 49(8): 183-188.

Li Feng. Effect of Ti-modified plasma nitriding on properties of precipitation-hardened steel[J]. Heat Treatment of Metals, 2024, 49(8): 183-188.

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钛改性离子渗氮处理对沉淀硬化钢性能的影响

Effect of Ti-modified plasma nitriding on properties of precipitation-hardened steel

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