Project information
Theoretical and experimental study of Ni-based model systems and thermodynamic description of phase equilibria
- Project Identification
- GA106/02/0876
- Project Period
- 1/2002 - 12/2004
- Investor / Pogramme / Project type
-
Czech Science Foundation
- Standard Projects
- MU Faculty or unit
- Faculty of Science
- Cooperating Organization
-
Institute of Materials Physics of the ASCR, v. v. i.
- Responsible person RNDr. Jiří Buršík, DSc.
The quaternary Ni-Al-Cr-X (X = Co, W, Mo, Ta, Ti) systems represent relatively simple yet sufficiently representative model systems for commercial Ni-based superalloys. The microstructure of these systems and the kinetics of phase transformations (precipitation of ordered phases as (' and ( in the bulk, precipitation of intermetallic phases as P, ( at internal interfaces) in course of thermal treatment at typical service temperatures will be studied experimentally by analytical microscopic techniques. Microstructure will be correlated with mechanical properties (hardness). The experimentally obtained phase data will be used as an input for thermodynamic modelling of equilibrium phase diagrams of above mentioned systems in the regions of coexistence of phases with order - disorder transition, i. e. (-(' or (-(, respectively. The main result will be the establishment of phase diagram sections in the concentration and temperature ranges of interest for superalloy applications and creation
Publications
Total number of publications: 18
2003
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Study and Modelling of Phase Equilibria in Ni-Al-W System
CALPHAD XXXII (La Malbaine), year: 2003
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STUDY OF QUATERNARY NI-BASE ALLOYS
JUNIORMAT '03, year: 2003
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Theoretical and Experimental Phase Equilibria Study in Ni-Al-Cr-(Ta, Ti) Systems at 900 and 1000stC
CALPHAD XXXII (La Malbaine), year: 2003
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Theoretical and experimental study of alloying element redistributions in Ni-based weldments at 1200stC
CALPHAD XXXII (La Malbaine), year: 2003
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Thermodynamic Modelling and Analytical Electron Microscopy of Model Quaternary Ni-based Systems
ISPMA 9 (Prag), year: 2003
2002
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Phase Equilibria Calculations in the Ni-Al-Cr-Co and Ni-Al-Cr-W Systems with Respect to New Experimental Information on the gamma and gamma' Phase Region
Calphad XXXI, Program and abstracts, year: 2002
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Simulated Element Redistribution in Ni-based Superalloy Weldment
Procedings of the VIII Seminar Diffusion and Themodynamics of Materials, year: 2002
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Theoretical and Experimental Study of the gamma and gamma' Eqilibrium in the Ni-Al-Cr-Co System
Intermetallics, year: 2002, volume: 10, edition: 6