Processing,microstructure,and mechanical properties of wire arc additively-manufactured AZ91 magnesium alloy using cold arc process

作     者：Bai-hao CAI Ji-kang FAN Jie LI Dong-qing YANG Yong PENG Ke-hong WANG 蔡佰豪;范霁康;李杰;杨东青;彭勇;王克鸿

作者机构：Key Laboratory of Controlled Arc Intelligent Additive TechnologyMinistry of Industry and Information TechnologyNanjing University of Science and TechnologyNanjing 210094China School of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing 210094China 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报(英文版))

年 卷 期：2025年第35卷第1期

页      面：91-104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.51805265) the Fundamental Research Funds for the Central Universities,China(No.30922010921) 

主　　题：AZ91 magnesium alloy droplet transfer microstructure mechanical properties cold arc process 

摘      要：Thin walls of an AZ91 magnesium alloy with fine equiaxed grains were fabricated via cold arc-based wire arc additive manufacturing(CA-WAAM),and the droplet transfer behaviours,microstructures,and mechanical properties were *** results showed that the cold arc process reduced splashing at the moment of liquid bridge breakage and effectively shortened the droplet transfer *** microstructures of the deposited samples exhibited layered characteristics with alternating distributions of coarse and fine *** layer-by-layer deposition,the β-phase precipitated and grew preferentially along grain boundaries,while the fineη-Al_(8)Mn_(5)phase was dispersed in the α-Mg *** mechanical properties of the CA-WAAM deposited sample showed isotropic *** ultimate tensile strength and elongation in the building direction(BD)were 282.7 MPa and 14.2%,*** microhardness values of the deposited parts were relatively uniform,with an average value of HV 69.6.