A Deep Penetration Laser Cladding and Remelting Approach Developed for the Remanufacture of TC4 Alloy Parts
H-T. Huang, L-Z. Shen, M-X. Chen, S-L. Hu and S-Y. Xiao
This study developed a set of custom made laser remanufacturing equipment for deep penetration laser cladding and remelting tailored to the particular demands of the TC4 alloy. The yield strength improved to 865 MPa after laser cladding and the strength should be a good approximation to substrate. The yield strength was increased to 878 MPa by deep penetration laser remelting in a modified atmosphere. The experimental results of this method demonstrate the effectiveness of deep penetration laser remelting in remanufacturing and its potential to adapt to a wide range of part defects. This study demonstrated that the mechanical strength of TC4 alloy could be enhanced by deep penetration laser cladding and remelting.
Keywords: Fibre laser, TC4 titanium alloy, Ti6Al4V, laser cladding, deep penetration laser remelting, meltpool, mechanical properties, remanufacturing