Kinetics and dynamics of planar abnormal grain growth in nanocrystalline nickel

J. E. Darnbrough*, F. Christien, P. E.J. Flewitt

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

3 Citations (Scopus)

Abstract

Growth of abnormally large grains has been observed previously in nanocrystalline Nickel both in-directly by electron imaging after heat treatment and by in-situ resistivity measurement. However the form and rate of the growth has been derived indirectly. This work makes use of in-situ heat treatment combined with back scattered electron imaging illustrates that the abnormal micro-planar faceted grains grow with a dependence not only on the surrounding but also as the orientation of the growing facet. This observation has shown that the grains grow in a semi-constrained manner such that high index faces such as {211} grow faster than stable {111} faces.

Original languageEnglish
Pages (from-to)67-74
Number of pages8
JournalActa Materialia
Volume141
Early online date8 Sep 2017
DOIs
Publication statusPublished - 1 Dec 2017

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