Individual effect of Y and Nd on the microstructure formation of Mg-Y-Nd alloys processed by severe plastic deformation and their effect on the subsequent mechanical and corrosion properties

作     者：Maria Zemkova Peter Minarik Jan Dittrich Jan Bohlen Robert Kral 

作者机构：Charles UniversityDepartment of Physics of MaterialsKe Karlovu 512116PragueCzechia University of ZilinaResearch CentreUniverzitna8215/1Zilina01026Slovakia Institute of Material and Process DesignHelmholtz-Zentrum Hereon21502GeesthachtGermany 

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

年 卷 期：2023年第11卷第2期

页      面：509-521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 Czech Science Foundation under project no. 22-21122 J Partial financial support from the Ministry of Health of the Czech Republic under the grant Nr.20-08-0015A partial financial support from the Charles University Grant Agency under project numbers 389422 and 1172120, respectively partial financial support from the Ministry of Transport and Construction of the Slovak Republic,OPII,grant No. ITMS:313011AFG4, co-financed by ERDF 

主　　题：Magnesium Rare earth elements Microstructure Texture Mechanical strength Corrosion 

摘      要：This work investigated the effect of sole yttrium and neodymium alloying on the microstructure formation during severe plastic deformation by equal channel angular pressing(ECAP) and an impact on the mechanical strength and corrosion resistance of binary Mg-3Y and Mg-3Nd *** results are compared with a ternary Mg-4Y-3Nd alloy,which represents a simplified version of the commercially successful WE43 *** extensive study comprises a thorough microstructural analysis performed by scanning and transmission electron microscopy,including electron backscatter diffraction and texture analysis performed by X-ray *** is shown that the presence of Nd primarily caused precipitation during the processing of the Mg-3Nd alloy,while Y remained dissolved in the magnesium matrix in the Mg-3Y *** difference resulted in a significantly smaller average grain size in the Mg-3Y alloy(~0.77 nm) than in the Mg-3Nd alloy(~1.3 μm) after the final step of the processing and formation of a slightly different ***,the composition and the processing affected the mechanical and corrosion properties of the investigated materials,measured by compression deformation tests,microhardness measurement,and electrochemical impedance *** study shows that the ECAP-processed W3 sample exhibits a surprisingly good combination of ultrafine-grain structure,weak crystallographic texture,high strength,and high corrosion resistance compared with the other investigated *** attributes make this material very interesting for utilisation in the industry and/or medicine.