水平连铸冷轧退火工艺制备的Cu-Fe-P合金薄带特性

1910200910Vol.19No.10TheChineseJournalofNonferrousMetalsOct.20091004-0609(2009)10-1840-08−−Cu-Fe-P(410083)−−Cu-0.1Fe-0.03P−−−−ODF−−Cu-0.1Fe-0.03P{110}112{110}100{123}634S{001}100Cu-0.1Fe-0.03PTG146.1AFeaturesofCu-Fe-Palloystrippreparedbyprocessofhorizontalcontinuouscasting-coldrolling-annealingDAIJiao-yan,YINZhi-min,JIANGRong-rong,SONGLian-peng,YUANYuan(SchoolofMaterialsScienceandEngineering,CentralSouthUniversity,Changsha410083,China)Abstract:Cu-0.1Fe-0.03Palloystripswerepreparedbyanewprocessofhorizontalcontinuouscasting-coldrolling-annealing.Themicrostructuresofthestripswerestudiedbytensiletest,OM,X-raydiffractionandelectronmicroscopyanalysis.Theresultsshowthatcomparedwiththetraditionalpreparationofhotrolling-coldrolling-annealingprocess,theprocessofhorizontalcontinuouscasting-coldrolling-annealinghasnohotrolling.Whentheshrinkageandosteoporosisinthecontinuouscastingcannotcompletethemetallurgicalcomplexduringthecold-rollingprocess,thespotsandpeelingappearonthesurfaceofproducts.Thealloystripspreparedbythenewprocesshaveslightlowertensilestrength,electricalconductivityandsoftentemperatureandhigherelongation.Mechanicalpropertiesanisotropyexistsinthestripspreparedbythenewprocess,thuscausesthe45˚directioncrackwhenstamped.Keywords:Cu-0.1Fe-0.03Palloy;horizontalcontinuouscastingvolumeingot;strip;spotdefect;anisotropyCu-0.1Fe-0.03P[1−5]−−−−[6−7]−[8−9]45˚[10−11]−−(50371106)2008-11-262009-05-270731-88830262E-mail:[e-mail]1910−−Cu-Fe-P1841Cu-0.1Fe-0.03P1Cu-0.1Fe-0.03P20mm1200mm()−15mm5.0mm(570,1h)3.0mm(560,1h)3.0mm1.5mm(550,1h)0˚()30˚45˚60˚90˚()(1)INSTRON80322mm/min[12−15]IPAIPA=(4Xmax−Xmid1−Xmid2−Xmid3−Xmin)/4Xmax100%(1)XmaxXmin5σbσ0.2δXmid1Xmid2Xmid331Fig.1SamplingmethodsoftensilespecimenD8XCuKα{111}{200}{220}0α85˚0β360˚Harris(2)PHKL∑∑=nHKLnHKLHKLHKLHKLHKLHKLNIINIIP11ss)((2)25mL+55mL+20mL5020sSirion200MTP−11׃3−20~−3050mATecnaiG220s22.145˚(2(a))2(a)33(3(c))OSCa2Fig.2Productsmadeofcoldroll-annealingstrips:(a)Productwithcrackandspotdefect;(b)Productwithoutdefect20091018423−SEMEDSFig.3SEMimagesandEDSanalysisofspotdefectsandpeelofhorizontalcontinuouscastingingot-coldroll-annealingstrip:(a)Hierarchicalorganizationwithoutbonding;(b)Irregularshapeofsmallparticlesinsurfaceofcracks;(c)EDSanalysisofsmallparticles2.2−−440˚90˚45˚0˚30˚45˚60˚4Fig.4Mechanicalpropertiesofstudiedalloystripunderdifferentorientation90˚45˚2.3(ODF)5656{110}112{110}100S{123}634{001}002.477(7(a)~(b))FeFeP33.131910−−Cu-Fe-P18436Fig.6ODFdiagramofalloysheet:(a)Measuredtextures;(b)Positionofmainorientation20091018447OMTEMEDSFig.7OMandTEMimagesandEDSanalysisofstudiedalloystrip:(a)OM;(b)TEM,smallmagnification;(c)TEM,largemagnification;(d)EDSanalysisofprecipitation2(b)3.2{110}112(5)Cu-0.1Fe-0.03P{110}112{111}1104{111}(110)[211]88{111}{111}35.27˚78{111}(110)[211]Fig.8Spacerelationshipbetween{111}slipsurfacesand(110)[211]texture()((110)[211])σs=τk/(cosΦcosλ)(3)τkΦλcosΦcosλ1910−−Cu-Fe-P18451230˚90˚45˚60˚Cu-0.1Fe-0.03P45˚45˚−{110}1121Table1Tensile-orientedcrystallographyindexesofspecimensTensiledirection/(˚)Crystallographicindex0]211[]211[30)]638(11[−)]863(11[−45)]423(11[−)]234(11[−60]5/)863(11[−]5/)638(11[−90]111[]111[3.3−−−33−−()−−()−()2Table2DifferentstretchaxisofSchmidtandcountdownofmaximum-Schmidtofeachorientation(ηmax=max(cosΦcosλ))cosΦcosλSlipsystem0˚30˚45˚60˚90˚]011)[111(0.2721660.219416000.272166]110)[111(0.4082480.1811860.4082480.4082480]011)[111(0.1360830.0382300.4082480.4082480.272166]101)[111(00.3750.4082480.4082480]110)[111(00000]110)[111(00.3750.4082480.4082480]110)[111(00000]011)[111(0.2721660.1555840.4082480.4082480.272166]011)[111(0.2721660.1555840.4082480.4082480.272166]011)[111(0.2721660.219416000.272166]011)[111(0.1360830.0382300.4082480.4082480.272166]101)[111(0.4082480.1811860.4082480.4082480ηmax0.4082480.3750.4082480.4082480.2721661/ηmax2.44952.66672.44952.44953.674220091018463−Table3Mechanicalproperties,electricalpropertiesandsoftentemperaturesofcoldroll-annealingstripspreparedbynewandtraditionalprocessProcessσb/MPaσ0.2/MPaδ/%σ(IACS)/%Softeningtemperature/Newprocess2341424083386Traditionalprocess2581922286391()(9)9TEMFig.9TEMimagesofalloystripspreparedbynewprocess(a)andtraditionalprocess(b)41)−−,2)ODF−−Cu-0.1Fe-0.03P{110}112{110}100{123}634S{001}100−−45˚3)REFERENCES[1],,,,.Cu-Fe-P[J].,2007,36(9):527−529.CAOXing-min,XIANGChao-jian,YANGChun-xiu,MUSi-guo,GUOFu-an.TheMicrostructureandpropertiesofanewtypeofCu-Fe-Palloy[J].RareMetalMaterialsandEngineering,2007,36(9):527−529.[2],,,,,.[J].,2007,21(7):24−27.LIYin-hua,LIUPing,TIANBao-hong,JIAShu-guo,RENFeng-zhang,ZHANGYi.Developmentandexpectationofcopper-basedleadframematerialusedinintergratedcircuit[J].MaterialsReview,2007,21(7):24−27.[3],,,,.Cu-Fe-P[J].,2006,35(12):7−10.SUJuan-hua,XUYing-ying,DONGQi-ming,LIUPing,LIHe-jun.FiniteelementanalysisonresidualstressofCu-Fe-Palloyforleadframe[J].HotWorkingTechnology,2006,35(12):7−10.[4],,,,,.Cu-Fe-P[J].,2006,24(4):475−479.1910−−Cu-Fe-P1847LUDe-ping,WANGJun,LULei,LIUYong,XIEShi-fang,SUNBao-de.EffectofBandCeonmicrostructuresandpropertiesofCu-Fe-Palloy