Project information
Ni-based superalloys with protective coatings: microstructural assessment and thermodynamic modelling
- Project Identification
- GA106/99/1176
- Project Period
- 1/1999 - 1/2001
- Investor / Pogramme / Project type
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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-Co and Ni-Al-Cr-W systems represent relatively simple yet sufficiently representative model for commercial Ni-based superalloys. The microstructure of these systems and the kinetics of phase transformations (** precipitation in bu lk, intermetallic and carbidic phases 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 (compression creep tests at high temperature, 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 region of */** coexistence. The main res ult will be the establishment of phase diagram sections in the concentration and temperature ranges of interest for superalloy applications. This result can help substantially in further development of superalloys. Other part of project consists in the
Publications
Total number of publications: 7
2002
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Theoretical and experimental study of the gamma and gamma' equilibrium in Ni-based Superalloys
Materials Science and Engineering, year: 2002, volume: 324A, edition: 1-2
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Theoretical and experimental study of the influence of Cr on the gamma + gamma' phase field boundary in the Ni-Al-Cr system
Materials Science and Engineering, year: 2002, volume: 325A, edition: 1-2
2001
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Experimental study and thermodynamic assessment of the Ni-Al-Cr-Mo system at 1173 K
Scripta Materialia, year: 2001, volume: 2001, edition: 1
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Phase structure study of Ni-Al-Cr-W and Ni-Al-Cr-Co alloys
JUNIORMAT '01, year: 2001
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Study and modelling of the gamma and gamma' phase equilibrium in Ni-Al-Cr-Co system
Seminar on Thermodynamics of Materials, year: 2001
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Study of phase equilibria in Al-Cr-Ni-W and Al-Cr-Ni-Co alloys
10th Annual Conference of Doctoral Students WDS'01 "WEEK OF DOCTORAL STUDENTS 2001", year: 2001
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Theoretical and experimental study of the gamma and gamma' equilibrium in the Ni-Al-Cr-Co and Ni-Al-Cr-W systems
CALPHAD XXX, Technical Programme & Abstracts, year: 2001