雙零鋁箔力學(xué)性能的實(shí)驗(yàn)研究.pdf

1、中南大學(xué)碩士學(xué)位論文雙零鋁箔力學(xué)性能的實(shí)驗(yàn)研究姓名：李鵬申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：材料加工工程指導(dǎo)教師：劉楚明樊玉慶20040714碩1￡學(xué)位淪文AbsfractAbstractIntinspapertheeffectsofcomposition，second—phasecompound，mlcrostructuresandtexturesonthemechanicalpropertyofaluminumfoilweresystemati

2、callystudiesbymeansofcompositionanalysis，SEM，Xraydl絎action，opticalmicroscopy，TEMandODFTheresultsshowthatthefractureofaluminumfoflsiSdlfferentfromthatofblockmaterialsThefracturesurfaceofalumiumiSflatandthestrainofgrainsne

3、arthefractureStirfaceissmall，thereforeonlyfewgainscausetheffacttlreofaluminumfoil，WhentheratioofFetoSiiSabove30，thetensilestrengthofahtmmumfoiIdecreaseswiththeincreaseofFe／SiIftheamountofsmallsecondphasecompoundlSlargean

4、dtheydistributeumformly，theheterogeneityoftheinlcrostructnresofaluminumcouldbeimprovedReduceingthesizeofthesecondphasecompoundandincreasingtheproportionofthesmallsizesecond—phasecompoumdiSadvantageoustothestrengthofalumi

5、numfoilThepatternandprecipitationposiuonofthecompositionhaseagreatereffectthanthatofanneahngprocessMassivecompositionprecipitatingonthegrainboundarieswilldamagetheinteg】tyofgrainboundaries，SOitsnecessarytopreventthecompo

6、sitionfromprecipitatingontheg!rainboundariesinordertaisethestrengthofaluminumfoil，There’SacloserelationshipbetweenthesizeofsubgrainandthedislocationdensityAluminumfollwithsinailsubgamshasahighertensdestrengthAluminumfoll

7、wIthstrongrollingtexturewillalsohaveahighertensilestrengthWhenthedensityofCuandScomponentsiShigh，thetransversetensilestrengthofaluminumfollwilllargerthanthelongitudinaltensilestrengthWiththeincreaseofthepropomonofBs—comp