Effect of defocused electron beam surface Ni/VC alloying on microstructure and properties of 40Cr steel

IF 1.7 3区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Ironmaking & Steelmaking Pub Date : 2022-12-28 DOI:10.1080/03019233.2022.2155761

D. Wei, Hongquan Liu, Rong Wang, Xulong Ren, Qimao Qin

引用次数: 0

Abstract

ABSTRACT The use of alloying technology can improve the surface mechanical properties of 40Cr steel and prolong its service life. In this study, the Ni/VC surface alloying modification treatment of 40Cr steel was carried out using electron beam defocusing. The results show that after defocusing electron beam treatment, the cross-section of the specimen is composed of alloying layer, heat-affected zone and matrix. When the VC content is 80%, the maximum hardness is 1030 HV0.1, which is 4.3 times higher than that of the 40Cr matrix (240 HV0.1), and the lowest coefficient of friction (COF) is 0.395, which is 1.9 times lower than that of the matrix (0.757). The wear mechanism of the matrix is mainly severe abrasive wear, and the wear mechanisms of the three specimens are mainly slight abrasive wear, slight fatigue wear and adhesive wear.

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散焦电子束表面Ni/VC合金化对40Cr钢组织和性能的影响

采用合金化技术可以改善40Cr钢的表面力学性能，延长40Cr钢的使用寿命。本研究采用电子束散焦技术对40Cr钢进行了Ni/VC表面合金化改性处理。结果表明:经离焦电子束处理后，试样的横截面由合金层、热影响区和基体组成;VC含量为80%时，最大硬度为1030 HV0.1，是40Cr基体硬度(240 HV0.1)的4.3倍;最小摩擦系数(COF)为0.395，是基体硬度(0.757)的1.9倍。基体的磨损机制主要为重度磨粒磨损，三个试样的磨损机制主要为轻度磨粒磨损、轻度疲劳磨损和粘着磨损。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ironmaking & Steelmaking 工程技术-冶金工程

CiteScore

3.70

自引率

9.50%

发文量

125

审稿时长

2.9 months

期刊介绍： Ironmaking & Steelmaking: Processes, Products and Applications monitors international technological advances in the industry with a strong element of engineering and product related material. First class refereed papers from the international iron and steel community cover all stages of the process, from ironmaking and its attendant technologies, through casting and steelmaking, to rolling, forming and delivery of the product, including monitoring, quality assurance and environmental issues. The journal also carries research profiles, features on technological and industry developments and expert reviews on major conferences.