Hot isostatic pressing of nickel-base superalloy powder is probably the most important phase in the manufacture of complex-shaped aircraft parts (e.g. turbine disks). From the microstructure point of view, a preliminary evaluation can be made of as-hip materials produced according to a number of characteristic cycles. Choice of the most appropriate HIP process to use would to depend, to some extent, on subsequent heat treatment which tends to heighten certain aspects of the metallographic structure, such as thermal induced porosity or even distribution of alloying elements and certain intermetallic phases insoluble in the matrix. One of the main results of the work covered in this paper has been the confirmation of an important basic assumption: the microstructure of a superalloy produced from pre-alloyed powder using the HIP process is such that, besides making subsequent heat treatment much simpler, it also enables mechanical characteristics to be obtained which are comparable with superalloys produced using conventional technologies. (Wassmann)
Heat treatment of p/m nickel-base superalloys for turbine disks
Waermebehandeln von P/M Nickelbasis-Superlegierungen fuer Turbinenlaufraeder
ADVANCED FABRICATION PROCESSES. AGARD-CONF. PROC. ; Sep ; 18-20
1978
20 Seiten, 17 Bilder, 5 Tabellen
Aufsatz (Konferenz)
Englisch
Production of nickel-base superalloys by powder atomisation
Tema Archiv | 1980
AIAA | 2014
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