Wire Arc Additive Manufactured CuMn_(13)Al_(7)High-Manganese Aluminium Bronze

作     者：Chun Guo Baisong Hu Baoli Wei Feng Chen Chun Guo;Baisong Hu;Baoli Wei;Feng Chen

作者机构：College of Mechanical EngineeringAnhui Science and Technology UniversityBengbu 233000China 

出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)

年 卷 期：2022年第35卷第5期

页      面：382-392页

核心收录：

学科分类：0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 080502[工学-材料学] 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] 0811[工学-控制科学与工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：University Synergy Innovation Program of Anhui Province(Grant No.GXXT-2019-022) Anhui Provincial Natural Science Foundation of China(Grant No.1908085QE174) the Talent Program of Anhui Science and Technology University(Grant No.RCYJ201905) 

主　　题：CuMn_(13)Al_(7) High-manganese aluminium bronze Wire arc additive manufacturing Microstructure Mechanical properties 

摘      要：In this work,high-manganese aluminium bronze CuMn_(13)Al_(7)samples were prepared by arc additive manufacturing *** phase composition,microstructure,and crystal structure of the high-manganese aluminium bronze CuMn_(13)Al_(7)arc additive manufactured samples were analysed using direct-reading spectrometer,metallographic microscope,scanning electron microscope,and transmission electron *** micro-hardness tester,tensile tester,impact tester,and electrochemical workstation were also used to test the performance of the CuMn_(13)Al_(7)*** studying the microstructure and properties of the CuMn_(13)Al_(7)samples,it was found that preparation of the samples by the arc additive manufacturing technology ensured good forming quality,almost no defects,and good metallurgical bonding inside the *** metallographic structure(α+β+point phase)mainly comprises the following:the metallographic structure in the equiaxed grain region has an obvious grain boundaryα;the metallographic structure in the remelting region has no obvious grain boundaryα;the thermal influence on the metallographic structure produced a weaker grain boundaryαthan the equiaxed grain *** transverse and longitudinal cross sections of the sample had uniform microhardness distributions,and the average microhardness values were 190.5 HV0.1 and 192.7 HV0.1,*** sample also had excellent mechanical properties:yield strength of 301 MPa,tensile strength of 633 MPa,elongation of 43.5%,reduction of area by 58%,Charpy impact value of 68 J/cm^(2)at–20℃,and dynamic potential polarisation curve test ***,it was shown that the average corrosion potential of the sample was–284.5 mV,and the average corrosion current density was 4.1×10–3 mA/cm^(2).