Process for shaping and improving the mechanical properties of blanks produced by powder metallurgy from an alloy with increased high-temperature strength by extrusion

摘要

Process for shaping and improving the mechanical properties of blanks produced by powder metallurgy from an alloy with increased high-temperature strength by extrusion, and the deformation is successively performed in at least two temperature ranges different from one another or in two phases, in that the blank (2) is first reduced in its cross section at a temperature T1 and then is either agin reduced in at a lower temperature T2 or is deformed at a temperature T3 under counterpressure so that its cross section is further widened. T3 can be smaller than or equal to T1.