田间触土部件用60Si2Mn钢激光熔敷硬质相增强耐磨层的组织性能

doi:10.13251/j.issn.0254-6051.2023.12.036

金属热处理 ›› 2023, Vol. 48 ›› Issue (12): 213-221.DOI: 10.13251/j.issn.0254-6051.2023.12.036

田间触土部件用60Si2Mn钢激光熔敷硬质相增强耐磨层的组织性能

陈登华^1,2,3, 于洪海⁴, 刘海定^1,2,3, 何曲波^1,2,3,5, 张洁柯⁵, 黄海堂^1,2,3, 龚宇豪⁵

1.重庆材料研究院有限公司, 重庆 400707;
2.耐腐蚀合金重庆市重点实验室, 重庆 400707;
3.国家仪表功能材料工程技术研究中心, 重庆 400707;
4.海装广州局, 重庆 400042;
5.重庆大学材料科学与工程学院, 重庆 400044

收稿日期:2023-08-03 修回日期:2023-10-29 出版日期:2023-12-25 发布日期:2024-01-29
通讯作者: 刘海定,正高级工程师,博士,E-mail: liuhaiding@cmri.cc
作者简介:陈登华(1985—),男,高级工程师,主要研究方向为高性能金属材料,E-mail: 287331912@qq.com。
基金资助:
中国机械工业集团有限公司重大科技专项(ZDZX2020-2);中国机械工业集团有限公司青年科技基金(QNJJ-ZD-2022-19)

Microstructure and properties of hard-phase reinforced wear-resistantlayer on 60Si2Mn steel for soil-engaging component deposited by laser cladding

Chen Denghua^1,2,3, Yu Honghai⁴, Liu Haiding^1,2,3, He Qubo^1,2,3,5, Zhang Jieke⁵, Huang Haitang^1,2,3, Gong Yuhao⁵

1. Chongqing Materials Research Institute Co., Ltd., Chongqing 400707, China;
2. Chongqing Key Laboratory of Corrosion Resistant Alloys, Chongqing 400707, China;
3. National Instrument Functional Materials Engineering & Technology Research Center, Chongqing 400707, China;
4. Guangzhou Bureau of Sea Decoration, Chongqing 400042, China;
5. School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China

Received:2023-08-03 Revised:2023-10-29 Online:2023-12-25 Published:2024-01-29

摘要/Abstract

摘要： 设计了3种不同成分(I、Ⅱ、Ⅲ)的高耐磨粉末材料,利用激光熔敷对犁铧用60Si2Mn钢进行了表面强化,结合淬火和回火来调控硬质相的形貌分布特点,提高入土工作部件的耐磨性能。结果表明,淬火态熔敷层中主要析出相包括VC碳化物、晶界富Fe和Cr网状碳化物和Fe₂O₃颗粒。500 ℃高温回火后,微观组织以回火马氏体和碳化物为主。XRD物相分析证明熔敷层中存在VC、MoC、Cr₃C₂等多种碳化物。成分Ⅲ的熔敷层具有最高的硬度值;回火试样的磨损率全部高于淬火试样,且回火态成分Ⅱ的熔敷层的磨损率最低。不同熔敷层的磨损机制包括磨粒磨损和氧化磨损。

关键词: 触土部件, 激光熔敷, 马氏体, 碳化物, 回火, 耐磨性能

Abstract: High wear-resistant powder materials with 3 different chemical compositions (I, Ⅱ, Ⅲ) were designed and used to reinforce the surface of the 60Si2Mn ploughshare steel by laser cladding, then combined with quenching and tempering treatment to control the morphology and distribution characteristics of hard phases to improve the wear resistance of the working components. The results show that the as-quenched deposited metal mainly contains precipitated phases including VC carbide, Fe-rich and Cr-rich networked carbides, and Fe₂O₃ particles. After tempering at 500 ℃, the microstructure is dominated of tempered martensite and carbide, and the XRD phase analysis shows that the VC, MoC, Cr₃C₂ and other carbides exist in the deposited metal. The deposited metal with composition Ⅲ has the highest hardness value and the wear rate of tempered specimens is higher than that of the quenched, while the wear rate of deposited metal with composition Ⅱ is the lowest. The wear mechanisms for different deposited metals include abrasive wear and oxidation wear.

Key words: soil-engaging component, laser cladding, martensite, carbide, tempering, wear resistance

中图分类号:

TG142.1

陈登华, 于洪海, 刘海定, 何曲波, 张洁柯, 黄海堂, 龚宇豪. 田间触土部件用60Si2Mn钢激光熔敷硬质相增强耐磨层的组织性能[J]. 金属热处理, 2023, 48(12): 213-221.

Chen Denghua, Yu Honghai, Liu Haiding, He Qubo, Zhang Jieke, Huang Haitang, Gong Yuhao. Microstructure and properties of hard-phase reinforced wear-resistantlayer on 60Si2Mn steel for soil-engaging component deposited by laser cladding[J]. Heat Treatment of Metals, 2023, 48(12): 213-221.

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田间触土部件用60Si2Mn钢激光熔敷硬质相增强耐磨层的组织性能

Microstructure and properties of hard-phase reinforced wear-resistantlayer on 60Si2Mn steel for soil-engaging component deposited by laser cladding

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