Advantages of rapid solidification over casting of Mg-0.4Zn-1Y alloy  

作　　者：Drahomír Dvorský Shin-Ichi Inoue Ayami Yoshida JiríKubásek Jan Duchon Esther de Prado Andrea Školáková Klára Hosová Petr Svora Yoshihito Kawamura 

机构地区：[1]Institute of Physics,Czech Academy of Science,Prague,Na Slovance 1999/218221 Praha 8,Czechia [2]Magnesium Research Center,Kumamoto University,Kumamoto,2-39-1 Kurokami Chuo-ku Kumamoto,860-8555 Japan [3]Department of Metals and Corrosion Engineering,Faculty of Chemical Technology,University of Chemistry and Technology Prague,Technická516628 Praha 6–Dejvice,Czechia

出　　处：《Journal of Magnesium and Alloys》2024年第7期2847-2862,共16页镁合金学报（英文）

基　　金：supported by Japan Society for the Promotion of Science(KAKENHI Grant-in-Aid for Scientific Research;18H05475,18H05476 and JP20H00312);MRC International Collaborative Research Grant.The authors would like to thank the Czech Science Foundation(Project No.22-22248S);specific university research(A1_FCHT_2024_007)for financial support;the assistance provided by the Ferroic Multifunctionalities project,supported by the Ministry of Education,Youth,and Sports of the Czech Republic.Project No.CZ.02.01.01/00/22_008/0004591,co-funded by the European Union.CzechNanoLab project LM2023051 funded by MEYS CR is gratefully acknowledged for the financial support of the measurements/sample fabrication at LNSM Research Infrastructure.

摘　　要：The Mg-Y-Zn magnesium alloy system is commonly recognized for its remarkable combination of high strength and ductility,achieved even with minimal amounts of alloying elements.This exceptional performance is attributed to its unique microstructure,which includes Long-Period Stacking Ordered(LPSO)phases or the distinctive microstructure derived from the LPSO phase,referred to as the Mille-Feuille structure(MFS).This study systematically compares the traditional ingot metallurgy method with the rapid solidification technique,coupled with diverse heat treatments and extrusion processes.Microscopic analyses reveal variations in the presence of LPSO phases,Mille-Feuille structure,and grain size,leading to divergent mechanical and corrosion properties.The rapid solidification approach stands out,ensuring superior mechanical properties alongside a reasonable corrosion rate.

关 键 词：Rapid solidification LPSO KINK EXTRUSION Corrosion Ignition temperature 

分 类 号：TG146.22[一般工业技术—材料科学与工程] TG292[金属学及工艺—金属材料]