冷軋AZ61鎂合金的織構(gòu)演變與力學(xué)性能.pdf

1、東北大學(xué)碩士學(xué)位論文冷軋AZ61鎂合金的織構(gòu)演變與力學(xué)性能姓名：肖靜申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：趙驤王軼農(nóng)20090701東北大學(xué)碩士學(xué)位論文AbStractTexturalEvolutionandMechanicalPropertiesofAZ61MagnesiumAlloyDeformedbyColdRollingAbstractAsamodemlightmetallicstructuralmaterial，magnes

2、iumalloyiswidelyusedinautomotive，communication，electronics，andaerospaceindustriesDuetohexagonalclosepackedcrystalstructure，magnesiumalloyusuallyhavepoorformabilityatroomtemperatureTherefore，enhancingtheroomtemperaturefor

3、mabilitybytexturecontrollingandgrainrefiningistheresearchfocusinthedevelopmentofwroughtmagnesiumalloyInthepresentstudyhotextrudedAZ61magnesiumalloywasselectedasthestartingmaterialsTheAZ61magnesiumalloyWasrolledbyunidirec

4、tionalsynchronousrollingandasymmetricalrollingatroomtemperatureThereductionsofunidirectionalsynchronousrollingspecimenswere5％，10％and15％respectivelyThecoldrolledspecimenswereannealedat423K，573K，623Kand673Kfor30min，respect

5、ivelyForDSRprocessing，fourasymmetricalrollingroutes，namelyone—wayDSR，two—wayDSR，one—wayinverseDSRandtwowayinverseDSRwhichwereconductedwiththereductionof15％DSRedspecimenswereannealedat623Kfor30minMicrostructureswereexamin

6、edbyopticalmicroscopyandtextureswereinvestigatedbyODFanalysisBasedontheexperimentalresults，theevolutionoftexturesinAZ61magnesiumalloyprocessedbyunidirectionalsynchronousrollingandasymmetricalrollingwasanalyzedTheresultss

7、howthatwiththeincreasingofrollingreduction，theintensityof(0115)[05521(270。20000)，(1129)[0331](2400200300)and(1129)[303l】(3000，20。，300)textureofthesurfacelayerpresentedthetrendofdecreasingatthebeginning，thenincreasing，whi

8、letheintensityof(0115)[0552](270020000)and(1129)[3362](2700，20。，300)textureofthemiddlelayeralwaysexhibitedthetendencyofkeepingincreasingThemaintexturecomponentonthemiddlelayerkeptconstantwhilethemaintexturecomponentonthe