可控离子渗入对新型热作模具钢高温耐磨性能的影响

doi:10.13251/j.issn.0254-6051.2022.09.026

金属热处理 ›› 2022, Vol. 47 ›› Issue (9): 146-152.DOI: 10.13251/j.issn.0254-6051.2022.09.026

可控离子渗入对新型热作模具钢高温耐磨性能的影响

李文明¹, 罗德福², 廖宏毅¹, 潘虹吉²

1.湖南红宇智能制造有限公司, 湖南长沙 410600;
2.西华大学材料科学与工程学院, 四川成都 610036

收稿日期:2022-04-15 修回日期:2022-07-02 发布日期:2022-10-18
通讯作者: 罗德福,教授级高工,博士,E-mail:cd_df@126.com
作者简介:李文明(1986—),男,工程师,硕士,主要研究方向为金属材料表面改性技术研究与应用,E-mail:609808323@qq.com。

Effect of programmable ion permeation on high temperature wear resistance of a novel hot-working die steel

Li Wenming¹, Luo Defu², Liao Hongyi¹, Pan Hongji²

1. Hunan Hongyu Intelligent Manufacturing Co. , Ltd. , Changsha Hunan 410600, China;
2. School of Materials Science and Engineering, Xihua University, Chengdu Sichuan 610036, China

Received:2022-04-15 Revised:2022-07-02 Published:2022-10-18

摘要/Abstract

摘要： 借助高温摩擦磨损试验机、X射线衍射仪(XRD)、扫描电镜(SEM)、显微硬度计等研究了可控离子渗入(PIP)对新型热作模具钢显微组织及高温耐磨性的影响。结果表明,采用可控离子渗入技术处理后的新型热作模具钢试样表面形成了40 μm厚的致密且均匀的渗层。最外层的Fe₃O₄相能降低试样表面的摩擦因数,次表层的Fe_2-3N和Fe₄N能显著提高基体硬度。磨损温度低于 600 ℃ 时,Fe_2-3N和Fe₄N相稳定存在;磨损温度高于800 ℃时,Fe_2-3N和Fe₄N相转变为α-Fe相,形成含氮马氏体组织,提高了材料的抗高温磨损性能。

关键词: 新型热作模具钢, 可控离子渗入技术, 高温耐磨性能

Abstract: Effect of programmable ion permeation (PIP) on microstructure and high temperature wear resistance of a novel hot-working die steel was studied by means of high temperature wear testing machine, X-ray diffraction (XRD), scanning electron microscope (SEM) and micro-hardness testing machine. The results show that when the novel hot-working die steel is treated by PIP, a dense and complete compound layer reaching 40 μm is formed. The out layer is composed of Fe₃O₄ phase, which can reduce the surface friction coefficient. The subsurface layer is composed of Fe_2-3N and Fe₄N phases, which can improve the surface hardness. When the wear test temperature is lower than 600 ℃, Fe_2-3N and Fe₄N phases exist stably. When the wear test temperature is higher than 800 ℃, Fe_2-3N and Fe₄N phases transform into α-Fe phase to form a nitrogen-containing martensite structure, which improves the high temperature wear resistance of the material.

Key words: novel hot-working die steel, programmable ion permeation technology, high temperature wear resistance

中图分类号:

TG142.3

李文明, 罗德福, 廖宏毅, 潘虹吉. 可控离子渗入对新型热作模具钢高温耐磨性能的影响[J]. 金属热处理, 2022, 47(9): 146-152.

Li Wenming, Luo Defu, Liao Hongyi, Pan Hongji. Effect of programmable ion permeation on high temperature wear resistance of a novel hot-working die steel[J]. Heat Treatment of Metals, 2022, 47(9): 146-152.

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可控离子渗入对新型热作模具钢高温耐磨性能的影响

Effect of programmable ion permeation on high temperature wear resistance of a novel hot-working die steel

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