Enhanced strength-ductility synergy of magnesium alloy fabricated by ultrasound assisted directed energy deposition
作者机构：State Key Laboratory for Manufacturing Systems EngineeringSchool of Mechanical EngineeringXi'an Jiaotong UniversityXi'an 710049China
出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)
年 卷 期：2024年第178卷第11期
页 面：247-261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：National Natural Science Foun-dation of China(Nos.52275374,52205414) Xiaomi Founda-tion through the Xiaomi Young Scholar Program,the Key Research and Development Projects of Shaanxi Province(No.2023-YBGY-361) as well as the Young Elite Scientists Sponsorship Program by CAST(No.2021QNRC001) State Key Laboratory for Mechan-ical Behavior of Materials(NO.20212311) as well as the Xi’an Jiaotong University Basic Research Funds for Freedom of Explo-ration and Innovation-Student Programs(NO.xzy022023066)
主 题：Wire-arc directed energy deposition External ultrasound field Defects Microstructure evolution Strength-ductility synergy
摘 要：Investigations on the fabrication of large-size lightweight Mg alloy components by wire-arc directed en-ergy deposition(DED)are steadily ***,most of these components still suffer from inferior performance due to internal defects and inherent columnar ***,external ultrasound fields with different powers were successfully introduced into the wire-arc DED of AZ31 Mg *** microstructure,defects,and mechanical properties of the fabricated components were carefully charac-terized and *** results show that the external ultrasound fields lead to decreased porosity,complete columnar to equiaxed transition(CET),and enhanced ***,the UA90 samples exhibited a remarkable increase of~30%,~45%,and~189%in yield strength,ultimate tensile strength,and elongation,*** dominant mechanisms of enhanced strength-ductility synergy were analyzed in *** study thus sheds new light on wire-arc DED of Mg alloy components with excellent performance via external ultrasound fields.
维普期刊数据库
