異種金屬焊接工藝及接頭性能研究.pdf

1、西華大學碩士學位論文異種金屬焊接工藝及接頭性能研究姓名：陳文靜申請學位級別：碩士專業(yè)：材料加工工程指導教師：屈金山20080501西華大學碩士學位論文———_——————————————————_—————————————————————————————————————————————————————————————一一ResearchonWeldingProceduresandPropertiesofDissimilarMetalWe

2、ldedJointMaterialsprocessingengineeringGraduate：ChertwenjingSupervisor：ProfQuJinshanAbstractThestudyofdissimilarweldedjointspreparedbyshieldedmetalarcweldingprocessusingelectrodeA312isconductedindetailTheweldingof12mmthi

3、ck16MnRsteelandthe10n皿thick1Crl8Ni9steelismadeThestudyonthemechanicalpropertiesofdissimilarjointarecarriedout，andtheasweldedandthepostweldheattreatedjointcorrosiontestshavebeenperformedundertheconditionsofthedifferentcor

4、rosionconcentrationandthedifferentcorrosiondurationwhichsimularesthepracticalenvironmentstheweldingconstructionoperatesTheresearchonthecorrosionresistancepropertyofdissimilarweldedjointmetalsinthedifferentzoneisconducted

5、bymeansofSEM，EDSandX—RDanalyticaltechniqueThetestresultsshowthatthetensilestrengthandtheimpactworkofthedissimilarjointsatambienttemperaturearehigherthanthoseof16MnRbasemetal，themicrohardnesspeakvalueisgotinfusionzoneadja

6、centtobasemetal16MnR啪eIltheweldedjointsareheld2hoursunder6500C，7500Cand8500C，respectivelythecorrosionresistanceofdissimilarjointbecomesbetterwiththeincreaseofheattreatmenttemperatureThereisamaximumaveragecorrosionratefor

7、thejointtreatedunder6500C，holding2hours，thehardnessvaluefluctuatesgreatlytherefore，theworstcorrosionresistanceofthedissimilarweldedjointisgotWhenthepostweldheattreatedjointsareheld30mins，60mins，90mins，120minsrespectively