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.
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)
出处
《材料保护》
CAS
CSCD
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)。
