Different compositions of TC4/TC11 functional gradient materials interface by wire arc additive manufacturing

作     者：WANG JiaChen WANG He XU TianQiu LIU ChangMeng 

作者机构：School of Infrastructure Engineering Nanchang University Beijng Aerospace FeiTeng Equipment Technology Co. Ltd. Department of Mechanical Engineering Politecnico di Milano School of Mechanical Engineering Beijing Institute of Technology 

出 版 物：《Science China Technological Sciences》 (中国科学:技术科学(英文版))

年 卷 期：2024年第67卷第12期

页      面：3777-3782页

核心收录：

学科分类：12[管理学] 1201[管理学-管理科学与工程(可授管理学、工学学位)] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：supported by the National Key Research and Development Program of China (Grant No. 2022YFB4601900) 

主　　题：additive manufacturing functional gradient materials titanium alloys transitional layers 

摘      要：Titanium alloy is widely utilized in diverse industries due to its exceptional specific strength, making it a material with significant potential for advancement. Nevertheless, homogeneous materials are inadequate to meet the demands of various *** gradient materials(FGMs) have garnered increasing interest for their ability to tailor materials and structures. The continuous transition in FGMs often offers a more uniform and well-connected interface. However, there remains a lack of comprehensive research on the transition interface. In this study, TC4/TC11 double-alloy materials were produced using doublewire additive manufacturing. The wire feeding rates were adjusted to create materials with varying compositions. The grain morphologies, microstructures, and mechanical properties were examined. It was observed that as the TC11 content increased,the grain size decreased, the β content rose, the ultimate tensile strength improved, and the elongation decreased. Additionally,analysis of the fracture morphologies revealed that the dimples became smaller, indicating characteristics of ductile *** the solid solution aging heat treatment, it is observed that the α phase increases in size, and the mechanical properties are enhanced. These observations indicate that double-wire additive manufacturing can produce diverse interfaces. Furthermore,the heat treatment process has been shown to enhance the material properties, thus establishing an experimental foundation for FGMs.