Surface Micro Patterning of Aluminium Reinforced Composite through Laser Peening

AluminiumCompositeshaveuniversalengineeringapplicationsbecauseoftheirhigherstrengthto weightratio,ductility,andformability.However,indiverseapplications,mechanicalpropertiesare theprerequisiteatclosersurfaceregions.Suchlocalizedchangeswithoutimpactingvarioussurface treatmentapproachescanattemptthebulkphase.Laserpeeningisanadvancedsurfaceengineering technique,whichhasbeensuccessfullyappliedtoimprovethesurfacemorphologyofthematerial.In thiswork,theauthorsfocusonimprovingthesurfacepropertiesofAl7075compositethroughlaser peeningtechnique.Thehardenedlayerwasevaluatedusingsurfaceintegritywithopticalmicroscopy, EDS, SEM and analysis of microhardness. Process parameters and resulting microstructures of Aluminiumcompositearesummarized,alongwiththeimpactoflaserpeeningonsurfaceproperties. Researchresultsindicatedthatlaserpeeningshowsasignificantinfluenceonthefinalconditionof thesurfacelayerofAluminiumcomposite. KEywoRdS Laser Peening, Mechanical Properties, Metal Matrix Composites, Microstructure Analysis, Stir Casting

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