Si对ZA35合金组织和摩擦磨损性能的影响  

Effect of Si on microstructure and friction and wear properties of ZA35 alloy

作　　者：付文达 刘敬福[1] 丁荣年 FU Wenda;LIU Jingfu;DING Rongnian(School of Materials Science and Engineering,Liaoning Technical University,Fuxin 123000,China)

机构地区：[1]辽宁工程技术大学材料科学与工程学院,辽宁阜新123000

出　　处：《兵器材料科学与工程》2019年第1期47-50,共4页Ordnance Material Science and Engineering

基　　金：国家自然科学基金(51601085);辽宁省自然科学基金(201602356)

摘　　要：以不同Si含量的ZA合金为研究对象,利用金相显微镜、扫描电镜及摩擦磨损试验研究Si对ZA35合金的组织和耐磨性的影响。结果表明:适量Si加入可以有效细化晶粒,提高ZA35合金的耐磨性,当Si的质量分数为1.35%时,粗大树枝晶转变为细小碎块状且组织均匀,细化效果最优;随Si含量的增多,摩擦磨损性能逐渐增强,当Si的质量分数为1.8%时,与ZA35合金相比,磨损量减少76.7%,摩擦因数降低46.9%。ZA alloys with different Si contents were studied.The effects of alloying element Si on the microstructure and wear resistance of ZA35 alloy were investigated by metallographic microscope,scanning electron microscope and friction and wear experiments.The results show that the addition of proper amount of Si can effectively refine the grains and improve the wear resistance of ZA35 alloy.When the mass fraction of Si is 1.35%,the coarse dendrites transform into fine fragments and uniform structure,and the refining effect is optimal.With the increase of Si content,the friction and wear properties are gradually improved.Compared with ZA35 alloy,when the Si content is increased to 1.8%,the wear amount is reduced by 76.7% and the friction coefficient is reduced by 46.5%.

关 键 词：ZA35合金 SI 显微组织 摩擦磨损性能 

分 类 号：TG146.1[一般工业技术—材料科学与工程]