1. MODELING THE MICROMECHANICAL STATE OF γ′-PRECIPITATES IN Ni-BASED SUPERALLOYS.
- Author
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CALZADO, L., YEPEZ-MARTINEZ, H., and CALDERON, H. A.
- Subjects
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MICROMECHANICS , *PRECIPITATION (Chemistry) , *HEAT resistant alloys , *GREEN'S functions , *STRAINS & stresses (Mechanics) , *ANISOTROPY , *PHYSICS research - Abstract
A simple model for describing the mechanical state associated with γ′-particles in Ni–Al superalloys is presented. The model is based on the properties of the anisotropic elastic Green function. The strain and stress fields produced by a single cubic particle are described. The self-energy for parallelepiped γ′-particles is calculated, finding the cubic geometry as the energetically most favorable particle shape. The anisotropy interaction between γ′-particles is investigated. The computed results are further examined considering the interaction energy between constituting elements of the particles. The configurational force acting on a γ′-particle during a creep test is analyzed. [ABSTRACT FROM AUTHOR]
- Published
- 2007
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