Diffusion welding process and joint＇s microstructure behavior of SiCW／6061Al composite-中国期刊网

摘要 Therulessuchasprocessparametersaffectingjointpropertiesandtheevolutionprincipleofweld'smicrostructurehavebeenresearchedbyadoptingdiffusionweldingprocesstoconnectSiCw/6061Alcomposite.ExperimentalresultsshowthatthereexistsacriticaltemperatureregionbetweensolidandliquidphaselineofSiCw/6061Alcomposite,andtheregionwillshrinkwiththeincreasingofweldingpressure.Whendiffusionweldingoccurredunderthecriticaltemperatureregion,weldingjointexhibitsbadpropertyofbonding,andthematrixandthereinforcementcan'tbondeffectively.Whendiffusionweldingoccurredinthecriticaltemperatureregion,thestrengthofweldingjointchangeswidelywiththevariationofweldingtemperature.Whenweldingtemperaturevariesin10℃,thestrengthofweldingjointwillchangeobviously.Onlywhenweldingtemperatureishigherthanthecriticaltemperatureregion,stablejointpropertiescanbeobtained.Simultaneouslythematrixandthereinforcementhasbetterinterfacialbondedindiffusionweldinginterface,andnoobviousinterfacereactionoccurred,andthusdiffusionweldingofSiCw/6061Alcompositecanbesuccessfullyrealized.

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Diffusion welding process and joint＇s microstructure behavior of SiCW／6061Al composite

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Diffusion welding process and joint＇s microstructure behavior of SiCW／6061Al composite

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