Abstract
Melt spinning of a nickel-base superalloy containing various amounts of boron up to 3.0 wt% has been carried out to explore the potential of extended boride alloyability through rapid solidification. More specifically, the melt-spinning castability, ribbon-solidification microstructure and heat-treatment precipitation were studied as a function of boron concentration by using analytical electron microscopy and a number of other techniques. Special attention was given to the boride structure, chemistry and thermal stability. The microstructural observations were then correlated to the ribbon bend ductility tested in as-cast and annealed conditions. On the basis of the present results, future investigation of superalloys using the rapid solidification process and the boride alloying concept is discussed.
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Huang, S.C., Chang, K.M. Effects of boron addition on a melt-spun Ni-base superalloy. J Mater Sci 19, 1220–1228 (1984). https://doi.org/10.1007/BF01120032
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DOI: https://doi.org/10.1007/BF01120032