<title>Moldless casting by laser</title>

The significance of deposition point standoff variations in multiple-layer coaxial laser cladding (coaxial cladding standoff effects)

“…This is broadly in agreement with previous findings that powder catchment efficiency increases with powder mass flow rate [16,17]. Additionally, the laser energies per unit length (power/traverse speed) for the test conditions A, B and C were, 125, 138 and 167 J mm À1 , respectively, so it supports findings that clad bead height can decrease with increasing laser specific energy [5].…”

Modelling the geometry of a moving laser melt pool and deposition track via energy and mass balances

“…Early work by Weerasinghe and Steen [2,3] considered single tracks and identified the three basic stainless steel clad section profiles, shown in figure 1. Simple linear relationships between major parameters such as cladding speed and track width were derived and later experimental work by McLean et al [4,5] continued this. Colaco et al [6] used the relationships as the basis for one of the first models of single-track geometry, which was based on powder flow alone.…”

Process-induced microstructural characteristics of laser consolidated IN-738 superalloy

“…The similarities of these processes are that all of them are laser cladding based material additive process [8] whereas their differences lie in each individual process with its own unique process configuration and processing parameters, which further differentiates the process capability and productivity, surface quality and dimensional accuracy for the components thus fabricated, morphology of macro-and microstructures, and mechanical performance of the processed materials, and consequently, each of the processes could address different industrial needs [9][10][11][12][13][14][15][16]. Moreover, these processes are particularly attractive to aerospace applications due to their capability to directly produce functional components made from high-performance aerospace and marine gas turbine engines [26].…”