Analysis of Phase Transformation in Nickel-Base Alloy after Ageing |
| A. Merdaa, A. Zielińskib, G. Golańskia
aCzęstochowa University of Technology, Faculty of Production Engineering and Materials Technology, Institute of Materials Engineering, Częstochowa, Poland bStanisław Staszic Institute for Ferrous Metallurgy, Gliwice, Poland |
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| The aim of the performed tests was to analyse the precipitation processes in the 23Cr-45Ni-6W-Nb-Ti-B (HR6W) alloy based on nickel. The examined material was subjected to the process of long-term isothermal annealing at 700°, for various time periods of up to 10000 h. The scope of the tests included: structural tests using scanning electron microscopy, the analysis of the precipitation processes with the use of X-ray phase analysis and electron diffraction with transmission electron microscopy. The tests showed that only MX-type precipitates occurred in the analysed alloy in the as-received condition, whereas the long-term annealing contributed to the precipitation of secondary phases of M23C6 carbides and the Laves phase. |
DOI:10.12693/APhysPolA.135.98 topics: HR6W alloy, microstructure, precipitate |