Research and Progress in Laser Welding of Wrought Aluminum Alloys. I. Laser Welding Processes

A review on selective laser sintering/melting (SLS/SLM) of aluminium alloy powders: Processing, microstructure, and properties

“…Furthermore, in similarity to laser welding of aluminium alloys, the effectiveness of SLS/SLM processing had been found to be a function of physical properties (Table 1) such as low absorptivity to the laser beam, tenacious oxide films, low boiling point elements, high thermal conductivity, high co-efficient of thermal expansion, relatively wide solidification temperature ranges, high solidification shrinkage, a tendency to form low melting constituents, low viscosity, and high solubility of hydrogen in liquid state [4,30,31,32,44,45]. Meanwhile, in similarity to other metallic powders, SLS/SLM of aluminium alloy powders can be bedevilled with complications such as balling, porosity, layer distortion, cracking, poor dimensional accuracy and surface roughness, and loss of alloying elements [45].…”

Micro-Welding of Super Thermal Conductive Composite by Pulsed Nd:YAG Laser

“…In practice, the power density below 10 7 W/cm 2 is generally advisable to avoid severe ejection of molten material (Cao et al, 2003). At the 50 W of laser power it seems too high power density resulting blowholes and a poor quality of weld surface.…”

HFQ forming of AA6082 tailor welded blanks

“…The most commonly used welding technology for manufacturing the AA6082 tailor welded blanks is laser beam welding. Laser welding has various advantages, including high productivity, high weld quality in terms of controllable heat affected zone (HAZ) and weld zone, low distortion, flexibility due to the movable heat source, reliability and precision [2]. Generally, the overall formability of TWBs is significantly affected by the welding parameters [3], e.g.…”