Hybrid post-processing effects of magnetic abrasive finishing and heat treatment on surface integrity and mechanical properties of additively manufactured Inconel 718 superalloys

作     者：Kun Li Ruijin Ma Ming Zhang Wen Chen Xiaobin Li David Z.Zhang Qian Tang Lawrence E.Murr Jinfeng Li Huajun Cao Kun Li;Ruijin Ma;Ming Zhang;Wen Chen;Xiaobin Li;David Z.Zhang;Qian Tang;Lawrence E.Murr;Jinfeng Li;Huajun Cao

作者机构：State Key Laboratory of Mechanical TransmissionChongqing UniversityChongqing 400044China Chongqing Key Laboratory of Metal Additive Manufacturing(3D Printing)Chongqing UniversityChongqing 400044China College of EngineeringMathematics and Physical SciencesUniversity of ExeterNorth Park RoadExeter EX44QFUK W.M.Keck Center for 3D InnovationUniversity of Texas at El PasoEl PasoTX 79968USA Department of MetallurgicalMaterials and Biomedical EngineeringUniversity of Texas at El PasoEl PasoTX 79968USA Institute of MaterialsChina Academy of Engineering PhysicsMianyang 621908China 

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

年 卷 期：2022年第128卷第33期

页      面：10-21页

核心收录：

学科分类：080503[工学-材料加工工程] 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）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：financial support from the Fundamental Research Funds for the Central Universities in China(No.2021CDJQY-024) the Research Project from Chongqing Key Laboratory of Metal Additive Manufacturing(3D Printing)in Chongqing University(No.02090011044158) the National Natural Science Foundation of China(No.51975073) 

主　　题：Magnetic abrasive finishing Additive manufacturing Inconel 718 Microstructure–property relationship Heat treatment 

摘      要：Desired microstructure and surface integrity are critical to achieving the high performance of additively manufactured *** the present work,the hybrid post-processes of magnetic abrasive finishing(MAF)and post-heat treatment(HT)were applied to the additively manufactured Inconel718 *** hybrid effects and influencing mechanism on the surface quality and mechanical properties of the additively manufactured samples have been studied *** results show that the MAF process effectively reduces the surface roughness by more than an order of magnitude due to the flexibility and geometric consistency of the magnetic particles and abrasives with the finished *** proper sequence of MAF and HT obtains enhanced mechanical properties for the homogenized-MAF-aged sample with the yield strength of 1147 MPa,the ultimate tensile strength of 1334 MPa,and the elongation of 22.9%,which exceeds the standard wrought *** surface integrity,compressive residual stress field,and grain refinement induced by the MAF and subsequent aging heat treatment increase the cracking resistance and delay the fracture failure,which significantly benefits the mechanical *** MAF process combined with proper post-heat treatment provides an effective pathway to improve the mechanical properties of additively manufactured materials.