Effect of Al_(2)O_(3) Nanoparticle on Cavitation Strengthening of Magnesium Alloys  

作　　者：Lei Liu Chuanhui Huang Xinghua Lu Ping Yu Longhai Li Huafeng Guo 

机构地区：[1]Xuzhou Institute of Technology,Xuzhou,221000,China

出　　处：《Fluid Dynamics & Materials Processing》2021年第2期501-509,共9页流体力学与材料加工（英文）

基　　金：the University Natural Science Research Programme of Jiangsu Province(Grant No.18KJB460028);Project of Xuzhou University of Technology(Grant No.XKY2019215);the Natural Science Foundation of Jiangsu Province(Grant No.BK20180177);the Xuzhou Science&Technology Project(Grant No.KC18014).

摘　　要：In order to study the effect of Al_(2)O_(3) nanoparticles in the cavitation-based strengthening process of magnesium alloys,the impact of a micro-jet generated by bubble collapse has been considered.The strengthening mechanism is based on the transfer of the energy of cavitation due to bubble collapse to Al_(2)O_(3) particles,which then undergo collision with the surface of the sample.The hardness,surface morphology,element content and chemical state of the strengthened samples have been analyzed by microhardness tests,SEM(scanning electron microscopy)and XPS(X-ray photoelectron spectroscopy)techniques.The results show that:after 5 min of strengthening,nanoparticles can be found on the surface of the sample through SEM.Combined with XPS tests,the content of Al_(2)O_(3) in the sample can be significantly increased,indicating that Al_(2)O_(3) particles penetrate into the surface and increase its hardness by 29.1 HV.

关 键 词：CAVITATION nanoparticles strengthening SEM XPS 

分 类 号：TG1[金属学及工艺—金属学]