锻造及热处理工艺对耐磨钢组织及耐磨性能的影响

doi:10.13251/j.issn.0254-6051.2022.07.025

金属热处理 ›› 2022, Vol. 47 ›› Issue (7): 138-143.DOI: 10.13251/j.issn.0254-6051.2022.07.025

锻造及热处理工艺对耐磨钢组织及耐磨性能的影响

张衡, 张迪, 刘馨宇, 王晓东, 高占勇, 陈林

内蒙古科技大学材料与冶金学院(稀土学院), 内蒙古包头 014010

收稿日期:2022-02-11 修回日期:2022-05-18 出版日期:2022-07-25 发布日期:2022-08-12
通讯作者: 陈林,教授,E-mail:chenlin39805@163.com
作者简介:张衡(1996—),男,硕士研究生,主要研究方向为高强耐磨钢,E-mail:1428574168@qq.com。
基金资助:
包头市科技计划项目(2019Z3004—1)

Effect of forging and heat treatment on microstructure and wear resistance of wear-resistant steel

Zhang Heng, Zhang Di, Liu Xinyu, Wang Xiaodong, Gao Zhanyong, Chen Lin

School of Materials and Metallurgy(Rare Earth College), Inner Mongolia University of Science and Technology, Baotou Inner Mongolia 014010, China

Received:2022-02-11 Revised:2022-05-18 Online:2022-07-25 Published:2022-08-12

摘要/Abstract

摘要： 研究了锻造变形量与热处理工艺对一种新型耐磨钢显微组织、硬度和耐磨性的影响,并用彩色金相法定量分析了钢中马氏体+残留奥氏体含量。结果表明:不同变形量下耐磨钢组织均为贝马复合相,贝氏体板条厚度由30%变形量的524 nm降低到70%变形量的292 nm,马氏体+残留奥氏体体积分数由25.4%增加至41.1%;与直接进行260 ℃等温转变时相比,先在Ms点以上的330 ℃保温5 min,再进行260 ℃等温转变时的贝氏体板条厚度减少了357.2 nm,磨损量降低了0.02 g,且平均摩擦因数由0.311降至0.212。

关键词: 锻造, 热处理工艺, 耐磨性能, 贝马复相组织

Abstract: Effect of forging deformation and heat treatment process on microstructure, hardness and wear resistance of a new wear-resistant steel was studied, and the content of martensite+retained austenite in the steel was quantitatively analyzed by color metallography method. The results show that the wear-resistant steel microstructure under different deformations are all bainite/martensite multiphase, and the thickness of the bainitic lath is reduced from 524 nm to 292 nm as the deformation increases from 30% to 70%, while the volume fraction of martensite +retained austenite increases from 25.4% to 41.1%. After holding at 330 ℃(above the Ms) for 5 min and then 260 ℃ isothermal transformation, and compared with that of direct 260 ℃ isothermal transformation without 330 ℃ holding, the thickness of bainite lath decreases by 357.2 nm, the wear loss decreases by 0.02 g, and the average friction factor decreases from 0.311 to 0.212.

Key words: forging, heat treatment process, wear resistance, bainite/martensite multiphase

中图分类号:

TG156.1

张衡, 张迪, 刘馨宇, 王晓东, 高占勇, 陈林. 锻造及热处理工艺对耐磨钢组织及耐磨性能的影响[J]. 金属热处理, 2022, 47(7): 138-143.

Zhang Heng, Zhang Di, Liu Xinyu, Wang Xiaodong, Gao Zhanyong, Chen Lin. Effect of forging and heat treatment on microstructure and wear resistance of wear-resistant steel[J]. Heat Treatment of Metals, 2022, 47(7): 138-143.

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锻造及热处理工艺对耐磨钢组织及耐磨性能的影响

Effect of forging and heat treatment on microstructure and wear resistance of wear-resistant steel

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