Microstructure and Phase Equilibria in Ni-Al-Cr-Co Alloys

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Authors

BURŠÍK Jiří BROŽ Pavel POPOVIČ Jiří STARÁ Zdenka

Year of publication 2005
Type Article in Proceedings
Conference EUROMAT 2005
MU Faculty or unit

Faculty of Science

Citation
Field Physical chemistry and theoretical chemistry
Keywords thermodynamics; phase equilibria; microstructure; nickel; aluminum; chromium; cobalt
Description The present work reports on results of experimental study of microstructure of several Ni-Al-Cr-Co alloys prepared by melting of pure metals with the intention to cover a range of compositions with different phase constitution. Observations and quantitative evaluations were done after long term annealing at temperatures ranging from 1173 K to 1373 K by means of scanning and transmission electron microscopy with energy dispersive X-ray analysis. Quantitative data on volume fraction and chemical composition of phases found in particular alloys were subsequently used as an input for optimisation of thermodynamic parameters. Phase diagrams were constructed, covering the range of compositions and temperatures of interest for practical application.
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