Deformation mechanism for high temperature creep of a directionally solidified nickel-base superalloy
- Chinese Academy of Sciences, Shenyang (China)
- Northeastern Univ., Shenyang (China). School of Materials and Metallurgy
Modern nickel-base superalloys, which contain a high volume fraction of hard cubical {gamma}{prime} precipitates embedded coherently in a softer {gamma} matrix, are used as turbine blade material due to their good resistance to creep deformation at high temperature. In this present study, the authors will analyze the relationship between the steady-state creep rate and the applied stress of DZ17G, a modern DS cast nickel-base superalloy used for producing turbine blades and vanes for aeroengine applications. On the basis of TEM observations and calculations of the threshold stress for different deformation mechanism, the authors finally propose the deformation mechanism for creep of DZ17G superalloy at high temperature.
- OSTI ID:
- 665236
- Journal Information:
- Scripta Materialia, Vol. 39, Issue 7; Other Information: PBD: 4 Sep 1998
- Country of Publication:
- United States
- Language:
- English
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