%0 Journal Article %T QUANTITATIVE METALOGRAPHY OF HEAT TREATED S6K SUPERALLOY %A Juraj Belan %J Materials Engineering %D 2011 %I Faculty of Mechanical Engineering, Univerzity of Zilina %X Alloy S6K is former USSR superalloy used in DV ¨C 2 jet engine. It is used for turbine rotor blade and whole cast small sized rotors with working temperature up to 800 ¡Â 1050¡ãC. This alloy was evaluated after annealing at 800 ¡ãC/ 10 and followed by cooling with various rate, presented with cooling in water, oil and air. Cooling rates, represented by various cooling mediums, have a significant influence on diffusion processes, which are going in structure. Methods of quantitative metallography (Image Analyzer software NIS ¨C Elements for carbides evaluation, measuring of secondary dendrite arm spacing and coherent testing grid for gama' - phase evaluation) are used for evaluation of structural characteristics on experimental material ¨C Ni base superalloy S6K. %K S6K superalloy %K Annealing %K Degradation %K Diffusion %K Quantitative analysis %U http://fstroj.uniza.sk/journal-mi/PDF/2011/21-2011.pdf