Mechanical Properties of Laser Shock Forging and Wire Arc Additive Composite Repair Parts of Aluminum Alloy
To address the issue of reduced mechanical properties after arc additive manufacturing repair of aluminum alloy components,a hybrid repair process combining laser shock forging(LSF)and wire arc additive manufacturing(WAAM)was introduced,and tensile tests were conducted on the repaired parts.The effects of process parameters such as fiber spacing,pulse energy,pulse frequency,current intensity and feed rate on the mechanical properties of the repaired parts are investigated,and the stress-strain curves and fracture locations of the composite process and arc additive process are compared.The results show that by optimizing the fiber spacing,operating current,and feed rate,and maximizing the pulse energy and frequency,the tensile strength and elongation of the repaired parts can be improved by 16.4%and 1.5 times respectively at most.The hybrid process can strengthen the fusion zone and partially melted zone of the repaired components,thereby enhancing their mechanical properties.
repair and remanufactureLSFWAAMmechanical properties
万方数据
维普
