液相等离子体碳氮共渗时间对H13热作模具钢渗层组织及性能的影响

doi:10.13251/j.issn.0254-6051.2023.09.017

金属热处理 ›› 2023, Vol. 48 ›› Issue (9): 99-105.DOI: 10.13251/j.issn.0254-6051.2023.09.017

液相等离子体碳氮共渗时间对H13热作模具钢渗层组织及性能的影响

范兴平^1,2, 范维³, 谢雯⁴

1.攀枝花学院钒钛学院, 四川攀枝花 617000;
2.攀枝花学院钒钛资源综合利用四川省重点实验室, 四川攀枝花 617000;
3.攀枝花学院图书馆, 四川攀枝花 617000;
4.四川四环锌锗科技有限公司, 四川雅安 625000

收稿日期:2023-05-02 修回日期:2023-07-26 出版日期:2023-09-25 发布日期:2023-10-25
作者简介:范兴平(1979—),男,教授,博士,主要研究方向为钒钛新材料及表面改性,E-mail:fanxingping123@163.com

Effect of liquid phase plasma carbonitriding time on microstructure and properties of infiltration layer of H13 hot work die steel

Fan Xingping^1,2, Fan Wei³, Xie Wen⁴

1. School of Vanadium and Titanium, Panzhihua University, Panzhihua Sichuan 617000, China;
2. Sichuan Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua University, Panzhihua Sichuan 617000, China;
3. Library, Panzhihua University, Panzhihua Sichuan 617000, China;
4. Sihuan Zinc & Germanium Technology Co., Ltd., Yaan Sichuan 625000, China

Received:2023-05-02 Revised:2023-07-26 Online:2023-09-25 Published:2023-10-25

摘要/Abstract

摘要： 为提高H13热作模具钢的高温抗氧化性能及硬度,采用液相等离子体电解碳氮共渗技术对H13热作模具钢进行了碳氮共渗处理,用XRD、SEM、维氏硬度计等检测手段,对模具钢共渗层的微观结构、物相组成、硬度及高温抗氧化性进行测试,研究了碳氮共渗时间对渗层组织性能的影响。结果表明,在200 V电压下,分别经3、5、7 min液相等离子体碳氮共渗后的H13热作模具钢表面形成了铁的碳化物和氮化物,渗层的相组成包括Fe、Fe₁₉Mn、CrFe₄、Fe₃C、Fe_2-3N。随着碳氮共渗时间的延长,熔融物颗粒越聚越多,会产生“山坡”状形貌,使其表面变得更加粗糙,渗层厚度也增加,当碳氮共渗时间为7 min时,渗层厚度最大约5.9 μm。显微硬度随碳氮共渗时间的延长而升高,碳氮共渗7 min渗层的显微硬度最高达到403.13 HV0.2。H13热作模具钢经液相等离子体电解碳氮共渗后,其耐高温氧化性能显著提高。

关键词: H13热作模具钢, 液相等离子体电解, 碳氮共渗, 高温抗氧化

Abstract: In order to improve high temperature oxidation resistance and hardness of H13 hot work die steel, the liquid phase plasma electrolytic carbonitriding technology was used to treat the H13 hot work die steel. The microstructure, composition, hardness and high temperature oxidation resistance of infiltration layer of the hot work die steel were tested by means of XRD, SEM and Vickers hardness tester, and the effect of carbonitriding time on microstructrue and properties of the infiltration layer was investigated. The results show that iron carbides and nitrides are formed on surface of the H13 hot work die steel after liquid phase plasma carbonitriding for 3, 5 and 7 min respectively at 200 V voltage. The phase composition of the infiltration layer includes Fe, Fe₁₉Mn, CrFe₄, Fe₃C and Fe_2-3N. With the extension of carbonitriding time, the molten particles gather more and more, which produces a “hillside” shape, making its surface more rough, and the thickness of the infiltration layer also increases. When the carbonitriding time is 7 min, the thickness of the infiltration layer is the largest, about 5.9 μm. The microhardness increases with the increase of carbonitriding time. The microhardness of the infiltrated layer after carbonitriding for 7 min is the highest, reaching 403.13 HV0.2. The high temperature oxidation resistance of the H13 hot work die steel is significantly improved after liquid phase plasma electrolytic carbonitriding.

Key words: H13 hot work die steel, liquid plasma electrolysis, carbonitriding, high temperature oxidation resistance

中图分类号:

TG156.82

范兴平, 范维, 谢雯. 液相等离子体碳氮共渗时间对H13热作模具钢渗层组织及性能的影响[J]. 金属热处理, 2023, 48(9): 99-105.

Fan Xingping, Fan Wei, Xie Wen. Effect of liquid phase plasma carbonitriding time on microstructure and properties of infiltration layer of H13 hot work die steel[J]. Heat Treatment of Metals, 2023, 48(9): 99-105.

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液相等离子体碳氮共渗时间对H13热作模具钢渗层组织及性能的影响

Effect of liquid phase plasma carbonitriding time on microstructure and properties of infiltration layer of H13 hot work die steel

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