Advances in Materials Science and Engineering / 2018 / Article / Tab 2

Review Article

A Review on Melt-Pool Characteristics in Laser Welding of Metals

Table 2

Optimum laser welding parameters for a selection of metals and alloys.

Metal/alloyParameter
Laser power (kW)Welding speed (m·min−1)Focal position (relative to the surface) (mm)Shielding gas

Mg alloy, WE43 [11]220 or −1Helium
Mg alloy, AZ91 [11]230Helium
Several Mg alloys [49]1.5a2.5–3a−2Helium
2–2.5b1-2b
Ti-6Al-4V alloy [50]NS0.8NSHelium
Stainless steel 304L [30]430.2Helium
Stainless steel 347 [30]520.4Helium
Stainless steel 304 [33]1.250.75NSNS
Galvanized steel [34]1.31NSArgon
Inconel 625 [39]1.52NSNS
Zn and Sn [51]1.61.55NS
Stainless steel 440 and 416 [35]Any combination of parameters that produces energy density in the range of 20.8 to 27.7 J·mm−2

NS: not stated in the report; afor thinner plates (2.5 mm and 3.0 mm); bfor thicker plates (5.0 mm and 8.0 mm).

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