Laser Cladding of Hot Work AISI H13 Die Steel

  • Pressure die casting process dies are prone to damage prematurely due to severe hot-working process conditions like thermo-mechanical fatigue, high speed molten melt erosion and high temperature wear.
  • Investigated the microstructure and mechanical properties of laser clad layer of AISI H13 tool steel powder
  • Achieved defect free clad layer of 1.2 mm thickness.

Laser clad layer properties compared with AISI H13 tool steel

Properties Heat Treated Laser Clad
Thickness - 1.2 mm
Residual Stress (MPa) -280±30 -670 ± 15
Dislocation Density (x 10-3) 18 ± 1 30± 2
Surface Hardness (VHN) 480 ± 10 630 ± 10
Yield Strength (MPa) 1230 1379
Elongation (%) 7 4.7
Ultimate Tensile Strength (MPa) 1457 1757