典型文献
Wire Arc Additive Manufactured CuMn13Al7 High?Manganese Aluminium Bronze
文献摘要：
In this work, high-manganese aluminium bronze CuMn13Al7 samples were prepared by arc additive manufacturing technology. The phase composition, microstructure, and crystal structure of the high-manganese aluminium bronze CuMn13Al7 arc additive manufactured samples were analysed using direct-reading spectrometer, metallographic microscope, scanning electron microscope, and transmission electron microscope. The micro-hardness tester, tensile tester, impact tester, and electrochemical workstation were also used to test the performance of the CuMn13Al7 sam-ples. By studying the microstructure and properties of the CuMn13Al7 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 sample. The metallographic structure (α + β + point phase) mainly comprises the following: the metallographic structure in the equiaxed grain region has an obvious grain boundary α; the metal- lographic structure in the remelting region has no obvious grain boundary α; the thermal influence on the metal- lographic structure produced a weaker grain boundary α than the equiaxed grain region. The transverse and longi- tudinal cross sections of the sample had uniform microhardness distributions, and the average microhardness values were 190.5 HV0.1 and 192.7 HV0.1, respectively. The 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/cm2 at - 20 ℃, and dynamic potential polarisation curve test results. Further, 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/cm2.
文献关键词：
中图分类号：
作者姓名：
Chun Guo;Baisong Hu;Baoli Wei;Feng Chen
作者机构：
College of Mechanical Engineering,Anhui Science and Technology University,Bengbu 233000,China
文献出处：
引用格式：
[1]Chun Guo;Baisong Hu;Baoli Wei;Feng Chen-.Wire Arc Additive Manufactured CuMn13Al7 High?Manganese Aluminium Bronze)[J].中国机械工程学报,2022(05):390-400
A类：
CuMn13Al7,lographic,longi
B类：
Wire,Arc,Additive,Manufactured,High,Manganese,Aluminium,Bronze,In,this,high,manganese,aluminium,bronze,samples,were,prepared,by,arc,additive,manufacturing,technology,phase,composition,microstructure,crystal,manufactured,analysed,using,direct,reading,spectrometer,metallographic,microscope,scanning,electron,transmission,tester,tensile,impact,electrochemical,workstation,also,used,performance,By,studying,properties,was,found,that,preparation,ensured,good,forming,quality,almost,defects,metallurgical,bonding,inside,point,mainly,comprises,following,equiaxed,grain,region,obvious,boundary,remelting,thermal,influence,produced,weaker,than,transverse,tudinal,cross,sections,had,uniform,microhardness,distributions,average,values,HV0,respectively,excellent,mechanical,yield,strength,elongation,reduction,area,Charpy,dynamic,potential,polarisation,curve,results,Further,shown,corrosion,mV,current,density,mA
AB值：
0.489717
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