稳定化处理对DC53钢力学性能及尺寸稳定性的影响

doi:10.13251/j.issn.0254-6051.2021.09.024

金属热处理 ›› 2021, Vol. 46 ›› Issue (9): 138-141.DOI: 10.13251/j.issn.0254-6051.2021.09.024

稳定化处理对DC53钢力学性能及尺寸稳定性的影响

邱华兴^1,2,3, 吴正环^1,2,3, 黎肖辉^2,3, 谷历文^2,3, 黄历锋^2,3

1.天津职业技术师范大学机械工程学院, 天津 300222;
2.国家模具产品质量监督检验中心, 广东东莞 523850;
3.广东省东莞市质量监督检测中心, 广东东莞 523808

收稿日期:2021-05-01 出版日期:2021-09-25 发布日期:2021-12-09
通讯作者: 黄历锋,副教授,博士,E-mail:hlf@gddqt.com
作者简介:邱华兴(1997—),男,硕士研究生,主要研究方向为模具钢热处理,E-mail:huaxingq@126.com。
基金资助:
重要工业原材料(模具钢材产品)质量国际比对研究

Effect of stabilization treatment on mechanical properties and dimensional stability of DC53 steel

Qiu Huaxing^1,2,3, Wu Zhenghuan^1,2,3, Li Xiaohui^2,3, Gu Liwen^2,3, Huang Lifeng^2,3

1. School of Mechanic and Engineering, Tianjin University of Technology and Education, Tianjin 300222, China;
2. National Mold Product Quality Supervision & Inspection Center, Dongguan Guangdong 523850, China;
3. Guangdong Dongguan Quality Supervision Testing Center, Dongguan Guangdong 523808, China

Received:2021-05-01 Online:2021-09-25 Published:2021-12-09

摘要/Abstract

摘要： 通过SEM、XRD、硬度、韧性以及三坐标测量机等测试,探究了常规热处理和回火后稳定化处理对冷作模具钢DC53力学性能和尺寸稳定性的影响。结果表明:DC53钢在稳定化处理前后的组织均为回火马氏体+少量残留奥氏体+碳化物。通过400 ℃×2 h 附加回火的稳定化处理方式后,试验钢的硬度和冲击吸收能量分别为61.5 HRC和19.7 J,同时材料的尺寸稳定性进一步提高。回火后组织稳定性的提升、材料内部残余应力值的降低以及残留奥氏体的陈化是改善试验钢尺寸稳定性的主要原因。

关键词: 冷作模具钢DC53, 稳定化处理, 力学性能, 尺寸稳定性

Abstract: Effects of conventional heat treatment and stabilization treatment after tempering on mechanical properties and dimensional stability of the cold work mold steel DC53 were investigated by using scanning electron microscope (SEM), X-ray diffraction(XRD), hardness, toughness and coordinate measuring machine (CMM). The results show that the microstructure of the DC53 steel consists of tempered martensite, a small amount of retained austenite and carbide before and after the stabilization treatment. After the stabilization treatment with additional tempering at 400 ℃ for 2 h, the hardness and impact absorbed energy of the tested steel are 61.5 HRC and 19.7 J, respectively, while the dimensional stability of the material is further improved. The improvement of microstructure stability after tempering, the reduction of the residual stress values in the material and the aging of retained austenite are the main reasons for the improvement of dimensional stability of the tested steel.

Key words: cold work mold steel DC53, stabilization treatment, mechanical properties, dimensional stability

中图分类号:

TG156

邱华兴, 吴正环, 黎肖辉, 谷历文, 黄历锋. 稳定化处理对DC53钢力学性能及尺寸稳定性的影响[J]. 金属热处理, 2021, 46(9): 138-141.

Qiu Huaxing, Wu Zhenghuan, Li Xiaohui, Gu Liwen, Huang Lifeng. Effect of stabilization treatment on mechanical properties and dimensional stability of DC53 steel[J]. Heat Treatment of Metals, 2021, 46(9): 138-141.

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稳定化处理对DC53钢力学性能及尺寸稳定性的影响

Effect of stabilization treatment on mechanical properties and dimensional stability of DC53 steel

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