Effect of Liquid Temperature on Surface and Mechanical Characteristics of Al-Mg Alloy Treated with a Cavitating Waterjet  

作　　者：Can Kang Shifeng Yan Haixia Liu Jie Chen Kejin Ding 

机构地区：[1]School of Energy and Power Engineering,Jiangsu University,Zhenjiang,212013,China [2]School of Materials Science and Engineering,Jiangsu University,Zhenjiang,212013,China [3]Department of Auxiliary Power Equipment,Shanghai Marine Equipment Research Institute,Shanghai,200031,China

出　　处：《Fluid Dynamics & Materials Processing》2024年第11期2431-2442,共12页流体力学与材料加工（英文）

基　　金：grateful for thefinancial support of National Natural Science Foundation of China(Grant Nos.52311540154 and 52175410).

摘　　要：The presented study aims to reveal the effect of liquid temperature on cavitation-induced erosion of an Al-Mgalloy. An experimental work was conducted using a submerged cavitating waterjet to impact the specimen surface.For a certain cavitation number and a given standoff distance, different liquid temperatures were considered.Accordingly, a comprehensive comparison was implemented by inspecting the mass loss and surface morphologyof the tested specimens. The results show that the cumulative mass loss increases continuously with the liquidtemperature. A cavitation zone with an irregular profile becomes evident as the cavitation treatment proceeds.Increasing the temperature promotes the generation of cavitation bubbles. Large erosion pits are induced aftersevere material removal. The microhardness increases with the distance from the target surface. At a liquidtemperature of 50℃, the microhardness fluctuates apparently with increasing the depth of indentation.

关 键 词：Cavitation erosion Al-Mg alloy liquid temperature mass loss surface morphology MICROHARDNESS 

分 类 号：TG146[一般工业技术—材料科学与工程]