The applications of laser alloying in steel and iron

Laser alloying with 5kW transverse-flow CO2 laser on the surfaces of No.45 steel examples are investigated in this paper.The surffaces of these examples have been coated with Co base alloy powder or Cr powder Laser alloying surfaces analysis were carried out by utilizing microscopy and energy spectrum method.It has been shown in our experiment that laser alloying on the surfaces of No.45 steel is possiable and is beneficial to improving wear and erosion resistance and so on.