Mechanical Properties and Corrosion Behavior of Multi-Microalloying Mg Alloys Prepared by Adding AlCoCrFeNi Alloy

作     者：Xiong Zhou Qichi Le Chenglu Hu Ruizhen Guo Tong Wang Chunming Liu Dandan Li Xiaoqiang Li Xiong Zhou;Qichi Le;Chenglu Hu;Ruizhen Guo;Tong Wang;Chunming Liu;Dandan Li;Xiaoqiang Li

作者机构：The Key Laboratory of Electromagnetic Processing of MaterialsMinistryof EducationNortheastern UniversityShenyang 110819China Key Laboratory for Anisotropy and Texture of Materials(MoE)School of Materials Scienceand EngineeringNortheastern UniversityShenyang 110819China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2022年第35卷第8期

页      面：1301-1316页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.51974082 and 51901037) the Fundamental Research Funds for the Central Universities(No.N2009003) the State Key Laboratory of Baiyunobo Rare Earth Resource Researched and Comprehensive Utilization(No.2021H2279) 

主　　题：AlCoCrFeNi HEA Pure Mg Mechanical properties Corrosion behavior 

摘      要：In this work,a series of multi-microalloying Mg alloys with a high degradation rate and high strength was prepared by adding AlCoCrFeNi HEA particles to the Mg melt followed by hot *** microstructure evolution and mechanical properties of the alloys were studied,meanwhile,the corrosion properties were evaluated by immersion weight loss and electrochemical *** indicated that HEA particles in the Mg melt were decomposed and formed the Ni-rich phase,which was distributed uniformly in the Mg *** with the pure Mg matrix,the Mg-3 HEA alloy exhibited excellent mechanical properties of the ultimate tensile strength~237 MPa and tensile yield strength~181 MPa,an increased rate of~49.1 and~96.7%,respectively,without sacrificing the *** the ultimate compressive strength(UCS)and compressive yield strength increased by~31.5 and~43%to 392±3 and 103±2 MPa,*** on theoretical analysis,the high YS of the alloys was mainly attributed to fine-grain strengthening and second phase ***,based on the study of corrosion behavior,it was found that with the increase in HEA particle content,the degradation rate of the composites increased because of the promotion of micro-galvanic corrosion,and the Mg-3 HEA alloy showed a maximum degradation rate of~25.2 mg cmh.