Thermo-mechanical model for simulating laser cladding induced residual stresses with single and multiple clad beads

Corrosion and Wear Resistance of Fe-Based Amorphous Coatings

“…Preparing amorphous coatings with laser cladding can solve the problems of low bonding strength and high porosity. However, since laser cladding completely melts amorphous powders and then cools and solidifies them to form coatings, the amorphous content of the coatings is low, and thermal stress and residual stress present inside the coatings easily generate cracks during rapid cooling [24,25]. This affects the development and application of amorphous coatings.…”

A one-dimensional analysis of the distribution of temperature, stress and strain in the co-axial laser cladding process

“…The heating and cooling rate are the critical parameters to optimize the material properties [4,10]. The generation of the differential and uneven heating and cooling rate depend on the heat source, the time of heating, the thermal gradient, environment temperature and materials properties.…”

“…Because, at point C and B, the contraction is restricted by the surrounding materials where above the top of the point A have no material contact. At the same time, the cooling rate and temperature at point A is higher than the point B and C. The generated strain is positive in these point and forms tensile stress [4,10]. In the heated zone (D and E point), initially, the expansion of material is denoted as ED…”

Fabrication of Mesh Patterns Using a Selective Laser-Melting Process

“…A combined surface film condition (h c ) was applied as a film boundary condition to account for convection and radiation on all external surface. The combined surface coefficient is h c = 2.4 × 10 −3 εT 1.61 , where ε is 0.85 emissivity [43]. The thermo-capillary phenomenon in a molten pool was considered by modifying the thermal conductivity by a factor of 2.5.…”