ZL101铸铝合金在不同振幅下的超声空蚀行为  

Ultrasonic Cavitation Behavior of ZL101 Cast Aluminum Alloy at Different Amplitudes

作　　者：崔艳雨 李瑶治 丁清苗 成斌 梁继承 CUI Yanyu;LI Yaozhi;DING Qingmiao;CHENG Bin;LIANG Jicheng(School of Aeronautical Engineering,Civil Aviation University of China,Tianjin 300300,China;School of Transportation Science and Engineering,Civil Aviation University of China,Tianjin 300300,China;PetroChina Natural Gas Sales Liaoning Branch,Shenyang 110000,China)

机构地区：[1]中国民航大学航空工程学院,天津300300 [2]中国民航大学交通科学与工程学院,天津300300 [3]中国石油天然气股份有限公司天然气销售辽宁分公司,沈阳110000

出　　处：《腐蚀与防护》2024年第6期29-35,共7页Corrosion & Protection

基　　金：民航安全能力建设项目;中国民航大学大学生创新创业项目(202210059018)。

摘　　要：利用超声振动空蚀装置研究了ZL101铸铝合金在60,70,80μm振幅下的超声空蚀行为。结果表明:ZL101铸铝合金主要由Al相及少量的Fe、Al_(0.5)Fe_(3)Si_(0.5)相组成,在空泡的反复冲击和溃灭作用下,晶粒内部较软的Al相率先发生空蚀破坏,进而损失晶粒边界,产生小空蚀坑;在不同振幅下,空蚀表面均产生明显的塑性变形和脆性断裂,同时具有明显的打孔和掏空行为;振幅的增大导致超声波强度和最大声压增大,进而导致空蚀环境中的压力波动变大,空泡溃灭增多,ZL101铸铝合金受到的空蚀破坏加剧,空蚀质量损失量增大,蚀坑深度增大。The ultrasonic cavitation behavior of ZL101 cast aluminum alloy at amplitudes of 60,70 and 80μm was studied by ultrasonic vibration cavitation device.The results show that ZL101 cast aluminum alloy was mainly composed of Al phase and a small amount of Fe and Al_(0.5)Fe_(3)Si_(0.5)phases.Under the repeated impact and collapse of cavitation,the softer Al phase inside the grain was first destroyed by cavitation erosion.In turn,the grain boundaries were lost to produce small cavitation pits.Under different amplitudes,the cavitation surface produced obvious plastic deformation and brittle fracture,and had obvious punching and hollowing behaviors.The increase of the amplitude led to the increase of the ultrasonic intensity and the maximum sound pressure,which in turn led to the increase of the pressure fluctuation in the cavitation environment and the increase of cavitation collapse,which intensified the cavitation damage of the ZL101 cast aluminum alloy and increased the cavitation quality loss and the pit depth.

关 键 词：超声空蚀 振幅 ZL101铸铝合金 空蚀质量损失 表面形貌 

分 类 号：TG172.9[金属学及工艺—金属表面处理]