Ductile and high strength Cu fabricated by solid-state cold spray additive manufacturing

作     者：Chaoyue Chen Yingchun Xie Shuo Yin Wenya Li Xiaotao Luo Xinliang Xie Ruixin Zhao Chunming Deng Jiang Wang Hanlin Liao Min Liu Zhongming Ren Chaoyue Chen;Yingchun Xie;Shuo Yin;Wenya Li;Xiaotao Luo;Xinliang Xie;Ruixin Zhao;Chunming Deng;Jiang Wang;Hanlin Liao;Min Liu;Zhongming Ren

作者机构：State Key Laboratory of Advanced Special SteelsSchool of Materials Science and EngineeringShanghai UniversityShanghai 200444China Institute of New MaterialsGuangdong Academy of SciencesNational Engineering Laboratory of Modern Materials Surface Engineering TechnologyGuangdong Provincial Key Laboratory of Modern Surface Engineering TechnologyGuangzhou 510651China Trinity College DublinThe University of DublinDepartment of Mechanical and Manufacturing EngineeringParsons BuildingDublin 2Ireland State Key Laboratory of Solidification ProcessingShaanxi Key Laboratory of Friction Welding TechnologiesSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China State Key Laboratory for Mechanical Behavior of MaterialsSchool of Materials Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China Key laboratory for Light-weight MaterialsNanjing Techchnology UniversityNanjing 211816China ICB UMR 6303CNRSUniv.Bourgogne Franche-ComtéUTBMF-90010 BelfortFrance 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2023年第134卷第3期

页      面：234-243页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the National Natural Science Foundation of China(Nos.52001191,52001078,52061135101) the Shanghai Science and Technology Committee(No.20511107700) Shanghai“Shuguang Program”(No.20SG42) Shanghai Rising-Star Program(No.20QA1403800) Key-Area Research and Development Program of Guangdong Province of China(No.2020B0101330001) Guangzhou Science and Technology Program of China(No.202007020008) the Research Fund of the State Key Laboratory of Solidification Processing(NPU,China)(No.2022-TZ-01) the Guangdong Provincial Key Laboratory of Modern Surface Engineering Technology and the Institute of New Materials,Guangdong Academy of Sciences(No.2020B1212060049) 

主　　题：Cold spray additive manufacturing Copper Heterogeneous microstructure Strength Ductility 

摘      要：In this work,pure Cu with excellent strength and ductility(UTS of 271 MPa,elongation to fracture of 43.5%,uniform elongation of 30%)was prepared using cold spray additive manufacturing(CSAM),realizing a breakthrough in the *** in-depth investigation was conducted to reveal the microstructure evolution,strengthening and ductilization mechanisms of the CSAM Cu,as well as the single *** results show that the CSAM Cu possesses a unique heterogeneous microstructure with a bimodal grain structure and extensive infinitely circulating ring-mounted distribution of *** on the single splat observation,the entire copper particle forms a gradient nano-grained(GNG)structure after high-speed impact *** GNG-structured single splat serves as a unit to build the heterogeneous microstructure with bimodal grain distribution during the successive deposition in *** results also show that CSAM can achieve synergistic strengthening and ductilization by controlling the grain refinement and dislocation *** work provides potential for CSAM technique in manufacturing various metallic parts with the desired combination of high strength and good ductility without additional post-treatments.