激光硬化与渗氮复合处理H13钢组织与性能  

Microstructure and properties of H13 steel treated by laser hardening and nitriding

作　　者：曹驰[1,2] 骆卫东[1] 陈志林 罗丽萍 陈贤武 CAO Chi;LUO Wei-dong;CHEN Zhi-lin;LUO Li-ping;CHEN Xian-wu(School of Materials Science and Engineering,Lanzhou Univ.of Tech.,Lanzhou 730050;Wenzhou Pump and Valve Engineering Research Institute,Lanzhou Univ.of Tech.,Wenzhou 325105,China)

机构地区：[1]兰州理工大学材料科学与工程学院,甘肃兰州730050 [2]兰州理工大学温州泵阀工程研究院,浙江温州325105

出　　处：《兰州理工大学学报》2024年第1期10-18,共9页Journal of Lanzhou University of Technology

基　　金：甘肃省科技计划项目(20YF8GA058);温州市工业科技项目(ZG20211003)。

摘　　要：通过激光淬火/离子渗氮复合方法对H13钢进行表面改性处理,从而提高其表面的性能.利用X射线衍射技术、光学显微观察、扫描电子显微观察、能谱分析技术、显微硬度和纳米测试系统以及高频往复磨损试验,分别研究了离子渗氮、激光淬火、以及激光淬火与离子渗氮复合处理对H13钢改性层组织结构、力学性能、摩擦磨损性能的影响过程和影响机理.结果表明:复合处理工艺可以显著改善改性层的综合性能.和单一渗氮处理相比,复合处理改性层硬度和有效硬化层深度分别从1180 HV和80μm提高至1360 HV和550μm,摩擦系数和磨损率分别从0.68和5.78×10^(-8)mm^(3)·N^(-1)·m^(-1)降低至0.59和1.35×10^(-8)mm^(3)·N^(-1)·m^(-1).试样的硬度和耐磨性显著增加,平均摩擦系数明显降低.H13 steel surface was modified by laser quenching/plasma nitriding compound treatment method,so as to improve the performance of its surface.The influence process and mechanism of plasma nitriding,laser quenching,and the laser quenching/plasma nitriding compound treatment on the microstructure,mechanical properties,and friction and wear properties of H13 steel were studied by X-ray diffraction,optical observation,scanning electron observation,energy spectrum analysis technology,microhardness and nano testing,and high-frequency reciprocating wear test,respectively.The results showed:that the compound treatment process can significantly improve the comprehensive performance of the modified layer.Compared with single nitriding treatment,the hardness of effective case depth of the compound treatment modified layer increased from 1180 HV and 80μm to 1360 HV and 550μm,respectively.and the friction coefficient and wear rate decreased from 0.68 and 5.78×10^(-8) mm^(3)·N^(-1)·m^(-1) to 0.59 and 1.35×10^(-8) mm^(3)·N^(-1)·m^(-1),respectively.The hardness and wear resistance of the specimen are significantly increased,and the average coefficient of friction is significantly reduced.

关 键 词：H13钢 激光淬火 离子渗氮 复合处理 

分 类 号：TG156.8[金属学及工艺—热处理]