Sulfur segregation to grain boundaries in Ni < inf> 3 Al and Ni < inf> 3 (AI,Ti) alloys

Document Type


Publication Date



The segregation of S to grain boundaries in Ni3Al and Ni3(Al, Ti) has been studied using Auger electron spectroscopy. The S concentration at the grain boundaries decreases more slowly with increasing temperature than would be predicted by segregation models based on a single solute binding energy to the grain boundaries. This behavior, which can be interpreted as an increase in the effective solute binding energy for a grain boundary as a function of temperature, is consistent with predictions of a model based on the existence of a spectrum of solute binding energies for grain boundaries.

Publisher's Statement

© 1978 American Society for Metals and The Metallurgical Society of Aime. Publisher’s version of record: https://doi.org/10.1007/BF02647165

Publication Title

Metallurgical Transactions A