The effect of anodic polarization on the plastic deformation behavior and formability of FeSi6.5 steel at room temperature was ex-perimentally investigated through uniaxial tensile and drawing of wire specimen in sulfuric acid solution with current densities of 0-40 mA/cm2.The formability of the FeSi6.5 steel was significantly improved after the anodic polarization.The plastic elongation of the specimen as an anode in the electrochemical environment was 4.4％-7％,but 2.7％in the air.The drawing force under the anodic polarization decreased by 12.5％-26％compared to that in deionized water.The softening is mainly attributed to the relief in work hardening caused by surface atom-ic dissolution.The work hardening mechanism of the FeSi6.5 steel wires under anodic polarization condition was analyzed using Hollomon equation and Voce relation combined with the Kocks-Mecking approach.These data support the view that the surface atom dissolution facilit-ates dislocation slip.FeSi6.5 steel wires were obtained using electrochemical cold drawing and presented a smooth surface and good ductility without crack after five-pass drawing with a total cross-section area reduction of 88％.The drawing with the assistance of anodic polarization is a promising technology for processing hard and brittle metal materials.

Dong Zhao;Feng Ye;Binbin Liu;Haoyang Du;Yaakov B.Unigovski;Emmanuel M.Gutman;Roni Shneck

State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beijing 100083,China;State Grid Jilin Electric Power Research Institute,Jilin 130021,China;Department of Materials Engineering,Ben-Gurion University of the Negev,Beer-Sheva 84105,Israel

矿物冶金与材料学报

[1]Dong Zhao;Feng Ye;Binbin Liu;Haoyang Du;Yaakov B.Unigovski;Emmanuel M.Gutman;Roni Shneck-.Enhancing the formability of FeSi6.5 steel by the anodic polarization)[J].矿物冶金与材料学报,2022(11):2072-2078

FeSi6,Mecking,facilit

Enhancing,formability,steel,by,anodic,polarization,effect,plastic,deformation,behavior,room,temperature,was,ex,perimentally,investigated,through,uniaxial,tensile,drawing,specimen,sulfuric,acid,current,densities,mA,significantly,improved,after,elongation,anode,electrochemical,environment,air,force,under,decreased,compared,that,deionized,water,softening,mainly,attributed,relief,work,hardening,caused,surface,atom,dissolution,mechanism,wires,condition,analyzed,using,Hollomon,equation,Voce,relation,combined,Kocks,approach,These,data,support,view,ates,dislocation,slip,were,obtained,cold,presented,smooth,good,ductility,without,crack,five,pass,total,cross,section,area,reduction,assistance,promising,technology,processing,brittle,metal,materials

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