“…Hybrid processes [ 20 , 21 ], as well as a specific type of generated beam [ 22 , 23 , 24 , 25 ] are also gaining importance. A separate guess is the issue of the impact of the heat input into the material and post-weld heat treatment of both 17-4 PH steel and other stainless steels, e.g., austenitic [ 19 , 23 , 26 , 27 ], ferritic [ 24 ], duplex [ 28 ], or aluminum [ 29 , 30 ]. This indicates that despite the fact that construction materials are characterized by good weldability, the method and effect of the heating and cooling, as well as the possible subsequent heat treatment [ 31 ] are of key importance for mechanical, plastic, or operational properties [ 12 , 13 , 32 ].…”