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/alloy | Parameter | Laser power (kW) | Welding speed (m·min−1) | Focal position (relative to the surface) (mm) | Shielding gas |
| Mg alloy, WE43 [11] | 2 | 2 | 0 or −1 | Helium | Mg alloy, AZ91 [11] | 2 | 3 | 0 | Helium | Several Mg alloys [49] | 1.5a | 2.5–3a | −2 | Helium | 2–2.5b | 1-2b | Ti-6Al-4V alloy [50] | NS | 0.8 | NS | Helium | Stainless steel 304L [30] | 4 | 3 | 0.2 | Helium | Stainless steel 347 [30] | 5 | 2 | 0.4 | Helium | Stainless steel 304 [33] | 1.25 | 0.75 | NS | NS | Galvanized steel [34] | 1.3 | 1 | NS | Argon | Inconel 625 [39] | 1.5 | 2 | NS | NS | Zn and Sn [51] | 1.6 | 1.5 | 5 | NS | 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 |
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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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