Buttweldprocessoffrictionstirweldingforthinslabarestudiedinthispaper,2524-T3
plateareselectedastestingmaterials.Thejoiningprocessisoptimizedtoobtainthewindowofweldprocess
andthebestprocessparameters.Thebuttweldproducedinoptimizedprocessparametershaveanexcellent
appearance,asthedeformationandthethicknessreductionofweldarelittle;X-rayinspectionresultsshow
theinnerqualityofweldsisgood,andnodefectsarefoundinthepicture;metallographicanalysisindicates
thetextureofweldincross-sectionisuniformanddense;mechanicalpropertytestresultshowsthatthe
meantensilestrengthofbuttjointis397MPa,whichisthe90.4% ofbasemetal’stensilestrength.