CFRTP -Al alloy laser assisted joining with a high speed rotational welding technology

[Display omitted] •The high speed rotational laser welding technology is introduced to join the CFRTP and the aluminum alloy.•The numerical model of CFRTP/Al alloy high speed rotational laser welding was established.•The CFRTP/Al alloy joint strength can be predicted by using the numerical simulation method. To reduce the defects in laser welding of carbon fiber reinforced polymer (CFRTP) and aluminum (Al) alloy and improve the mechanical properties of the joint, a high speed rotational laser welding (HSRLW) technology was introduced. The mathematical model of CFRTP-Al alloy laser joining was established and the temperature was simulated. The weld depth of aluminum alloy and the penetration depth of CFRTP/aluminum alloy joint were calculated and compared with the experimental result. It was found that the pore defects can be significantly reduced, and a high strength joint could be obtained. The simulation results agree well with the experimental results, and the strength of the CFRTP/aluminum alloy joint can be predicted by using the numerical simulation method.