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
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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
2005
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Aplikace termodynamických výpočtů fázových rovnováh pro vysvětlení změn v mikrostruktuře ochranných povlaků na bázi niklu
V. Pracovní setkání fyzikálních chemiků a elektrochemiků, year: 2005
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Determination of phase equilibria in the Ni-Al-W system
V. Pracovní setkání fyzikálních chemiků a elektrochemiků, year: 2005
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Experimental and Theoretical Study of Redistribution of Alloying Elements in Ni-based Weld Joints at High Temperatures
Intermetallics, year: 2005, volume: 13/2005, edition: 8
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Phase Equilibria in the Ni-Al-W System at 900 C
Monatshefte für Chemie, year: 2005, volume: 136, edition: 11
2004
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Alloying Element Redistributions in Ni-based Weldments at 1000oC
TOFA 2004, Book of Abstracts, Program, year: 2004
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Microstructural changes as postmortem temperature indicator in Ni-Co-Cr-Al-Y oxidation protection coatings
Materials Science and Engineering A, year: 2004, volume: 384, edition: 1-2
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Modelling and Experimental Study of Phase Equilibria in Ni-Al-Cr-Ti and Ni-Al-Cr-Co Systems
CALPHAD XXXIII, Program&Abstracts, year: 2004
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Phase equilibria in the Ni-Al-Cr-Ti system at 1000 and 1100 C
Journal of Alloys and Compounds, year: 2004, volume: 378, edition: 1-2
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Phase Equilibria in the Ni-Al-W System
TOFA 2004, Book of Abstracts, Program, year: 2004
2003
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Microstructural and phase equilibria study in the Ni-Al-Cr-W system at 1173 and 1273 K
Intermetallics, year: 2003, volume: 11, edition: 5