The crystallographic texture and dependent mechanical properties of the CrCoNi medium-entropy alloy by laser remelting strategy

作     者：Pengsheng Xue Lida Zhu Jinsheng Ning Peihua Xu Shuhao Wang Zhichao Yang Yuan Ren Guiru Meng Pengsheng Xue;Lida Zhu;Jinsheng Ning;Peihua Xu;Shuhao Wang;Zhichao Yang;Yuan Ren;Guiru Meng

作者机构：School of Mechanical Engineering and AutomationNortheastern UniversityShenyang 110819China State Key Laboratory for Mechanical Behavior of MaterialsSchool of Materials Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2022年第111卷第16期

页      面：245-255页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(No.51975112) Fundamental Research Funds for Central Universities(Nos.N180305032,N2103007) supported by the Liao Ning Revitalization Talents Program(No.XLYC1807063) 

主　　题：CrCoNi Laser remelting Porosity Crystallographic orientation Mechanical properties 

摘      要：Laser remelting(LR)has attracted widespread attention in recent years as an effective method to reduce internal defects and improve the surface quality of additively manufactured(AM)*** the present study,three different LR inter-layer scanning strategies(LR0,LR90 and LR45)and their effects on the porosity,microstructure,crystallographic texture and related mechanical properties of parts have been *** microscope,X-ray diffraction,and scanning electron microscope were used as characterization *** the LR90 sample,it shows obvious{111}texture and strongpreferred orientation along the scanning direction(SD),while the 0°offset and the 45°rotation of LR scanning strategy form a finer microstructure and weak crystallographic ***,the mechanical properties of the LR sample are improved compared with the sample only by laser metal deposition(LMD),and a combination of higher strength and optimal uniform elongation is obtained in the LR45 *** overall results show that a reasonable LR scanning strategy can reduce the anisotropy of AM parts and improve their mechanical properties.