In metallurgy, alloys are macroscopically homogeneous metallic materials consisting of at least two elements.
These can be, for example, steels of low strength or hardness.
Superalloys are metallic materials with a complex composition, mostly used for high-temperature applications. Iron, nickel, platinum, chromium or cobalt with additions of elements such as Co, Ni, Fe, Cr, Mo, W, Re, Ru, Ta, Nb, Al, Ti, Mn, Zr, C and B are used as the basis of the alloy. As a result, they have increased scaling resistance and high-temperature strength.
Common brand names include Stellite, Inconel, Hastelloy, Tribaloy, Waspaloy, Incoloy, NIMONIC, R88DT or X-40.
The common definition for alloy refers to a metallic material consisting of at least 2 elements.
The alloys that we can weld or join using laser technology are:
In addition, there are so-called superalloys:
When welding (super)alloys, the energy input of the laser beam is of central importance.
The parameters of the laser beam in CW mode – or optionally in pulsed mode – must be precisely tuned:
The balance is extremely important here.
In addition, the work must be 100% clean. In the worst case, foreign particles in the melt can lead to component failure with these sensitive alloys.
It is also particularly important that the welding consumables are carefully matched to the base material. This is done in elaborate laboratory work and is indispensable for a durable joint. The properties of the base material must be achieved in all respects.