Effect of Different Solution Heat Treatments on the Hot Ductility of Superalloys: Part 3 - Waspaloy

Andersson, Joel,1981-Högskolan Väst,Avd för tillverkningsprocesser,Department of Materials Technology, GKN Aerospace Engine Systems, Trollhättan, Sweden och Department of Materials and Manufacturing Technology, Chalmers University of Technology, Gothenburg, Sweden,PTW,Chalmers tekniska högskola,Chalmers University of Technology (författare)

Effect of Different Solution Heat Treatments on the Hot Ductility of Superalloys : Part 3 - Waspaloy

The susceptibility to heat affected zone cracking of Waspaloy has been investigated in terms of its hot ductility, measured as the reduction of area (RA). Gleeble testing with on-heating as well as on-cooling test cycles was carried out to illuminate the influence of different 4 h solution heat treatments between 996 and 1080°C. A ductility maximum of between 80 and 90%RA was found at 1050–1100°C for all conditions in the on-heating tests. Although the different heat treatment conditions showed similar macrohardness, the particle size and distribution of the γ′ and M23C6 phases differed, which significantly affected the on-heating ductility in the lower temperature test region. The ductile to brittle transition was initiated at 1100°C in the on-heating testing with indications of grain boundary liquation at the higher test temperatures. Ductility recovery, as measured in the on-cooling tests from 1240°C, was very limited with <30%RA for all conditions and test temperatures except for the 1080°C/4 h treatment, which exhibited 60%RA at 980°C.

Sjöberg, Göran,1946Department of Materials Technology, GKN Aerospace Engine Systems, Trollhättan, Sweden och Department of Materials and Manufacturing Technology, Chalmers University of Technology, Gothenburg, Sweden,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)sjobergg (författare)
Viskari, Leif,1982Department of Applied Physics, Chalmers University of Technology, Gothenburg, Sweden,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)viskari (författare)
Chaturvedi, M. C.Department of Mechanical and Industrial Engineering, University of Manitoba, Winnipeg, MB, Canada,University of Manitoba (författare)
Högskolan VästAvd för tillverkningsprocesser (creator_code:org_t)

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