Effect of scanning mode on temperature field and interface morphology of laser joining between CFRTP and TC4 titanium alloy

Dissimilar components composed of CFRTP (Carbon Fiber Reinforced Thermoplastic Polymer) and TC4 titanium alloy are increasingly applied in the aerospace field. The scanning mode offers a significant influence on quality laser joining joint between alloy. Therefore, with surface microgrooves has been implemented under oscillating linear respectively present research. temperature distribution is qualitatively explored based established mathematical model interface morphology strength CFRTP/TC4 lap joints compared. results indicate that simulated shows good agreement experimental results. Compared joining, weakens heat concentration creates heating zone larger area more uniform distribution. obtained by presents better resin filling fewer bubble defects due to variation form unequal amplitude oscillations, ratio 92.20% porosity 3.78%. In contrast, large number large-sized bubbles small-sized fusion gaps distributed at holds rate 60.11% 32.89%. By adopting method mode, higher can be 24.48 MPa.