Modelling of the thermal processes that occur during laser sintering of reacting powder compositions

Laser post annealing of cold-sprayed Al/alumina–Ni composite coatings

“…In our estimations [5], which confirm the calculations at [18], synthesis of the AlNi 3 phase is more energetically efficient, and this agrees with EDS analysis data. Meanwhile it is well known that numbers of intensity lines for Al 3 Ni 2 and NiAl phases coincide on XRD patterns, therefore for a single-valued assertion about presence of these phases thorough quantitative phase analysis is required.…”

Three-dimensional transient finite element analysis of the selective laser sintering process

“…Their predicted temperature distribution on the surface of the powder bed shows a good agreement with the experimental data for the titanium powder sintering. Advances in using the SLS process for creating functional material were recently presented by Chung and Das (2006), Kholpanov et al (2005) and Zakiev et al (2006). Chung and Das (2006) used the SLS process for the fabrication of functionally graded materials of Nylon-11 composites filled with different volume fractions of glass beads.…”

“…Chung and Das (2006) used the SLS process for the fabrication of functionally graded materials of Nylon-11 composites filled with different volume fractions of glass beads. Kholpanov et al (2005) and Zakiev et al (2006) developed a coupled two-dimensional mathematical model to simulate the SLS process combined with the well known process of self-propagation high-temperature synthesis. Bain et al (2006) presented a two-dimensional finite element model to predict the temperature field during laser sintering of polymer-coated molybdenum powder.…”

Intermetallics Synthesis in the Fe–Al System via Layer by Layer 3D Laser Cladding

“…Within the first approach, the preliminary addition of the strengthening pre-alloying intermetallic particles in the powder mixture occurs before the LAM process [12]. We experimentally approved [19][20][21][22][23] and theoretically substantiated [24] another approach for the selective laser sintering and the cladding in the Ti-Ni, Ti-NiTi, Ti-Al, Ni-Al, Fe-Ti systems where the strengthened intermetallide are created directly within the LAM process in the metallic matrix due to the synthesis reaction. The laser beam (LB) initiates a chemical reaction between the particles into the powder mixture of stoichiometric composition, thus leading to intermetallic phase creation, and excess substance (deviation from the stoichiometry) aggregate in the material matrix.…”