深冷处理对M2Al高速钢高温耐磨性的影响

doi:10.13251/j.issn.0254-6051.2022.08.026

金属热处理 ›› 2022, Vol. 47 ›› Issue (8): 158-162.DOI: 10.13251/j.issn.0254-6051.2022.08.026

深冷处理对M2Al高速钢高温耐磨性的影响

陈峙, 孟宇, 兰东生, 闫献国

太原科技大学机械工程学院, 山西太原 030024

收稿日期:2022-03-27 修回日期:2022-06-25 出版日期:2022-08-25 发布日期:2022-09-19
通讯作者: 孟宇,硕士研究生,E-mail:1583681901@qq.com
作者简介:陈峙(1981—),男,副教授,硕士生导师,主要研究方向为先进制造技术,E-mail:mechenzhi@tyust.edu.cn。
基金资助:
国家自然科学基金(51275333)

Effect of cryogenic treatment on high temperature wear resistance of M2Al high speed steel

Chen Zhi, Meng Yu, Lan Dongsheng, Yan Xianguo

School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan Shanxi 030024, China

Received:2022-03-27 Revised:2022-06-25 Online:2022-08-25 Published:2022-09-19

摘要/Abstract

摘要： 探究了不同深冷处理温度对M2Al高速钢高温耐磨性的影响。结果表明,经过深冷处理的M2Al高速钢试样微观组织发生了变化,残留奥氏体转变为马氏体,碳化物尺寸减小并且弥散分布在马氏体基体上。随着深冷温度的降低,碳化物的尺寸减小且分布均匀。M2Al高速钢经过深冷处理后高温摩擦因数比未深冷处理的减小,其中-160 ℃深冷处理试样的高温摩擦因数比未深冷处理的降低55.7%,经过深冷处理的M2Al高速钢磨损量比未深冷处理的减小,其中-160 ℃深冷处理后磨损量最小。未深冷处理的M2Al高速钢试样磨损形貌比较粗糙,发生严重的粘着磨损,经过-160 ℃深冷处理的试样,磨痕比较浅,磨损形式主要为磨粒磨损。当深冷处理温度为-160 ℃时,M2Al高速钢的高温耐磨性提升效果最好。

关键词: M2Al高速钢, 深冷处理, 高温耐磨性

Abstract: Effect of cryogenic treatment temperature on high temperature wear resistance of the M2Al high speed steel was investigated. The results show that the microstructure of the M2Al high speed steel specimen after cryogenic treatment is changed, the retained austenite is transformed into martensite, the carbide is reduced in size and dispersed on the martensite matrix. With the decrease of cryogenic temperature, the size of carbides decreases and the distribution is uniform. The high temperature friction coefficient of the steel after cryogenic treatment is lower than that without cryogenic treatment. The high temperature friction coefficient of -160 ℃ cryogenic treatment specimen is lower than that without cryogenic treatment by 55.7%. The wear loss of the steel after cryogenic treatment is lower than that without cryogenic treatment, and the wear loss after -160 ℃ cryogenic treatment is the smallest. The wear morphology of the steel specimen without cryogenic treatment is rough, and serious adhesive wear occurs. The specimen cryogenic treated at -160 ℃ has shallow wear marks, and the wear form is mainly abrasive wear. The M2Al high speed steel has the best effect of improving the high temperature wear resistance when the cryogenic treatment temperature is -160 ℃.

Key words: M2Al high speed steel, cryogenic treatment, high temperature wear resistance

中图分类号:

TH162⁺.1

陈峙, 孟宇, 兰东生, 闫献国. 深冷处理对M2Al高速钢高温耐磨性的影响[J]. 金属热处理, 2022, 47(8): 158-162.

Chen Zhi, Meng Yu, Lan Dongsheng, Yan Xianguo. Effect of cryogenic treatment on high temperature wear resistance of M2Al high speed steel[J]. Heat Treatment of Metals, 2022, 47(8): 158-162.

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深冷处理对M2Al高速钢高温耐磨性的影响

Effect of cryogenic treatment on high temperature wear resistance of M2Al high speed steel

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