Si含量对Fe-Cr-Si合金高温耐磨性能的影响  

Effect of Si Content on the High Temperature Wear Resistance of Fe-Cr-Si Alloy

作　　者：郝威 龙海洋 贵永亮 宋春燕 马汝成 张学峰 HAO Wei;LONG Haiyang;GUI Yongliang;SONG Chunyan;MA Rucheng;ZHANG Xuefeng(College of Metallurgy and Energy,North China University of Science and Technology,Tangshan 063210,China;Tangshan Key Laboratory of Special Metallurgy and Material Preparation,North China University of Science and Technology,Tangshan 063210,China;Guangdong Provincial Key Laboratory of Modern Surface Engineering Technology,National Engineering Laboratory for Modern Materials Surface Engineering Technology,Institute of New Materials,Guangdong Academy of Sciences,Guangzhou 510650,China)

机构地区：[1]华北理工大学冶金与能源学院,河北唐山063210 [2]华北理工大学唐山市特种冶金及材料制备重点实验室,河北唐山063210 [3]广东省科学院新材料研究所、现代材料表面工程技术国家工程实验室、广东省现代表面工程技术重点实验室,广东广州510650

出　　处：《材料保护》2024年第3期98-103,129,共7页Materials Protection

基　　金：河北省杰出青年科学基金(E2019209473);河北省高校百名优秀创新人才支持计划(Ⅲ)(SLRC2019030);河北省人才工程培养资助项目(A201905010)。

摘　　要：为研究Si含量对Fe-Cr-Si合金高温耐磨性能的影响,改善Fe-Cr-Si合金在高温环境下的耐磨性能,采用真空电弧熔炼制备了4种不同Si含量(原子分数5%、10%、15%、20%)的Fe-Cr-Si合金,研究了Si含量变化对其高温耐磨性能的影响。结果表明,4种Fe-Cr-Si合金均由单相组织构成,Si含量的增加使得合金硬度逐渐升高,并且促进了金属硅化物Fe_(3)Si的形成。随着Si含量的增加,Fe-Cr-Si合金的摩擦系数和磨损率逐渐减小,磨损机制由剥落磨损转变为氧化磨损、磨粒磨损和黏着磨损。In order to study the effect of Si content on the high temperature wear resistance of Fe-Cr-Si alloy,and improve the wear resistance of Fe-Cr-Si alloy in high temperature environment,the four kinds of Fe-Cr-Si alloys with different Si contents(5%,10%,15%and 20%,atomic fraction)were manufactured by vacuum arc melting,and the effect of the variation of Si content on their high temperature wear resist-ance was investigated.Results showed that all of the four Fe-Cr-Si alloys consisted of single-phase organization.The increase of Si content gradually improved the hardness of the alloy and promoted the formation of metal silicide Fe_(3)Si.Furthermore,with the increase of Si content,the friction coefficient and wear rate of the Fe-Cr-Si alloys gradually declined,and the wear mechanism changed from spalling wear to oxidation wear,abrasive wear and adhesive wear.

关 键 词：Fe-Cr-Si合金 金属硅化物 高温耐磨性能 

分 类 号：TH117.1[机械工程—机械设计及理论]