High Strength and Ductility of a MgAg/MgGdYAg/MgAg Sandwiched Plate Produced by High-Pressure Torsion

作     者：Qile Huo Yaxin Chen Bo Gao Yi Liu Manping Liu Xuefei Chen Hao Zhou Qile Huo;Yaxin Chen;Bo Gao;Yi Liu;Manping Liu;Xuefei Chen;Hao Zhou

作者机构：School of Materials Science and EngineeringJiangsu UniversityZhenjiang212013China State Grid Yangzhou Power Supply CompanyYangzhou225000China Nano and Heterogeneous Materials CenterSchool of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing210094China 

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

年 卷 期：2023年第36卷第2期

页      面：343-351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 Key Program of National Natural Science Foundation of China(No.51931003) the National Natural Science Foundation of China(Nos.52171118 and 52201124 and U22A20187) the China Postdoctoral Science Foundation(No.2021M701715) the Jiangsu Funding Program for Excellent Postdoctoral Talent(No.2022ZB279) the Project Internationalized Construction of Teachers of Jiangsu University(NO.4023000059) the Projects in Science and Technique Plans of Ningbo City(No.2019B10083) the Opening Project of the Key Laboratory of Advanced Manufacturing and Intelligent Technology(Ministry of Education)of Harbin University of Science and Technology(No.KFKT202103) 

主　　题：Heterogeneous Mechanical properties Mg-RE alloys Laminate 

摘      要：Due to their unique precipitation behavior,magnesium-rare earth(Mg-RE)alloys exhibit excellent strength and high thermal ***,owing to the negative blocking effect of precipitation on dislocation slipping,the plasticity and ductility of Mg-RE alloys become deteriorate after aging *** this work,a novel strategy to improve the combination of strength and ductility by designing a laminate heterostructured Mg alloy is ***-pressure torsion(HPT)processing is employed to fabricate a clean and well-bonded interface between MgGdYAg and MgAg *** two alloys have huge differences in precipitation hardening,and ductility is improved due to two *** one thing,the density of the second phases in the MgAg alloy is much lower than that of MgGdYAg alloy;for another,the non-basal〈c+a〉slipping is continuously activated during *** this mechanism,the uniform elongation of the heterostructured MgAg/MgGdYAg/MgAg alloy is improved to 7.1%.