QUANTITATIVE-ANALYSIS OF THE MICROSTRUCTU RE OF NICKEL-BASED SUPERALLOYS

Review of applications of automatic image analysis for the metallurgy of nickel based superalloys. Brief presentation of the development of these materials, more especially their various types of microstructure met ; evaluation of the use of image analysis as an inspection and st udy tool. The use of this technique is still relatively limited, espec ially because of imagery difficulties. A few extracts from literature point out the existence of various pertinent scales for the structural characterization of these materials. The last part is devoted to the interest of other techniques for the quantitative characterization of the microstructures of these superalloys.