Erosion behavior of a ship propeller material of QAl9-4 alloy  

作　　者：Wei-Jiu Huang Yong-Tao Zhou Zhen-Guo Wang Zhi-Kang Liao 

机构地区：[1]School of Materials Science and Engineering,Chongqing University of Technology,Chongqing,400054,China [2]School of Materials Science and Engineering,Beihang University,Beijing,100191,China

出　　处：《Rare Metals》2023年第7期2390-2395,共6页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.51171216);the National"Ten Thousand Plan"Scientific and Technological Innovation Leading Talent Project。

摘　　要：The erosion behavior of a QA19-4 alloy as a ship propeller material was investigated.The effects of the solution,the impact angles and the sand content were considered.The test results demonstrate that the mass loss of the alloy in 3.5 wt%NaCl solution is 1.35 times that in tap water,due to the corrosive effect of Cl^(-).The mass loss of the alloy increases as the impact angle increases up to~30°and consequently decreases as the impact angle increases.Also,this feature is typical for the ductile metal behavior.At the impact angle of 0°,this feature is associated with the predominant erosion mechanisms,such as shallow plowing and surface fatigue;at 30°,this feature is micro-cutting,deep plowing and surface fatigue;and at 45°,it becomes indentation accompanied by extruded lips.The mass loss and surface roughness of the alloy increase as the sand content increases under the testing conditions.

关 键 词：EROSION QAl9-4 alloy Impact angle Sand content Erode surface 

分 类 号：U668.2[交通运输工程—船舶及航道工程] TG172[交通运输工程—船舶与海洋工程]