Characterizations on the instantaneously formed Ni-containing intermetallics in magnesium alloys

作     者：Shuhui Lv Qiang Yang Fanzhi Meng Jian Meng Shuhui Lv;Qiang Yang;Fanzhi Meng;Jian Meng

作者机构：School of Materials Science and EngineeringChangchun University of Science and Technology 130022PR China State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022PR China 

出 版 物：《Journal of Magnesium and Alloys》 (镁合金学报（英文）)

年 卷 期：2023年第11卷第8期

页      面：2991-2998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：This work was supported by the National Natural Science Foundation of China under grants no.11804030 the Scientific and Technological Developing Scheme of Jilin Province under grants no.20200801048GH 

主　　题：Magnesium alloys Intermetallics Nickel Transmission electron microscopy(TEM) Impurity 

摘      要：Instantaneous reactions of Al,Mn,Zn,Zr and Y with Ni by mixing the prepared Mg-8Al-0.4Mn,Mg-6Zn-2Y-0.5Zr and Mg-0.6Ni melts were investigated in this work to reveal the underlying mechanisms of their effects on the removal of Ni *** results indicate three Ni-containing intermetallics,namely Al_(4)NiY,Al_(4)Ni(Y,Zr)and Al_(31)Ni_(2)Mn_(6).The former two phases present lath-like and have a relatively larger size(20μm in length)than the latest one which is granular with the diameter of∼120 *** illustrates that Al and Y(/Zr)can efficiently remove Ni by forming Al_(4)NiY or Al_(4)Ni(Y,Zr)which would precipitate to the bottom of the ***,adding Y into Mg-Al based alloys can simultaneously remove Fe and Ni,which contributes their excellent corrosion ***,this paper proposes two methods helped to efficiently remove Ni for both Mg-Al based alloys and Al-free Mg alloys,and both of them are also benefit to improve alloys’strength.