Direct TEM observation and quantification of the Gibbs-Thomson effect in a nickel superalloy
Materials Science
2022-10-06 v1
Abstract
Gibbs-Thompson effect is the general term referring to the influence of interfaces on the course of phase transformations such as precipitation or solidification. Whilst attention is most often focused on the Gibbs-Thomson effect on nucleation, growth and coarsening, the present study considers the reverse process of precipitate dissolution in a nickel-base superalloy during in situ TEM observation. The presence of several distinct populations of gamma-prime precipitates (primary, secondary, tertiary and grain boundary) allows the differences due to particle size to be quantified and interpreted. Important implications arise for the selection of heat treatment schedules for nickel-base superalloys and other alloy systems.
Keywords
Cite
@article{arxiv.2210.02133,
title = {Direct TEM observation and quantification of the Gibbs-Thomson effect in a nickel superalloy},
author = {Chryssanthi Papadaki and Wei Li and Christopher S. Allen and Mohsen Danaie and León Romano Brandt and Alexander M. Korsunsky},
journal= {arXiv preprint arXiv:2210.02133},
year = {2022}
}
Comments
9 pages, 4 Figures