The roles of microstructural anisotropy in tribo-corrosion performance of one certain laser cladding Fe-based alloy  

作　　者：Weitao SUN Xuehong HUANG Jian ZHANG Bin WANG Xiaoliang LIU 

机构地区：[1]College of Mechatronics Engineering,Binzhou University,Binzhou 256600,China [2]Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province),Dalian University of Technology,Dalian 116085,China [3]College of Mechatronics Engineering,Binzhou Polytechnic,Binzhou 256600,China

出　　处：《Friction》2023年第9期1673-1689,共17页摩擦（英文版）

基　　金：supported by the National High Technology Research and Development Program(“863”Program)of China(Grant No.SS2015AA042502);the National Natural Science Foundation of China(Grant No.52075047);Natural Science Foundation of Shandong Province(Grant Nos.ZR2021QE215,ZR2021QE297,and ZR2020KE051).

摘　　要：Because of the microstructural anisotropy for laser cladding materials,the tribo-corrosion performance can vary significantly with different directions.In this study,one certain Fe-based coating was fabricated by laser cladding.To study the effects of anisotropy,three working surfaces(0°,45°,and 90°to the building direction)were machined from the laser cladding samples;as-cast samples with an approximately homogeneous structure were prepared as controls.The tribo-corrosion tests were conducted in a 3.5 wt%NaCl solution with varying normal loads(5,10,and 15 N).The results demonstrated that the 45°surface has superior friction stability,corrosion resistance,and wear resistance.This was directly related to the crystal orientation and grain boundary density.In addition,a refined microstructure may enhance tribo-corrosion properties by increasing deformation resistance and decreasing surface activity.

关 键 词：laser cladding ANISOTROPY FE-BASED tribo-corrosion performance 

分 类 号：TG146.11[一般工业技术—材料科学与工程]