Surface Engineering · 2016 · 23 citations · 37 references
EngineeringMaterials EngineeringMaterials ScienceMechanical Behavior Of MaterialsMetallic MaterialsMetallurgyLaser Beam WeldingLaser Material ProcessingResidual Stress In JointsWeldingWelding ProcessesAluminum Alloy WeldingFracture MorphologyLaser Shock PeeningLaser Weld Residual StressLaser WeldingPorosityTensile StrengthWelded Joints
Effects of laser shock peening (LSP) on laser-welded aluminium alloy joints filling Al + 1.0 wt-% CeO 2 were investigated. Porosity ratio, microstructure, residual stress, hardness, tensile strength and fracture morphology were evaluated. Double-side LSP decreased the porosity ratio, refined microstructure, relieved the residual compressive stresses and increased the micro-hardness and tensile strength of the welds. Interaction between porosity and residual stress was also illustrated.
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