Grain boundary migration and fabric development in experimentally deformed octachloropropane

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Abstract

In this study in-situ observations of a deforming aggregate of the hexagonal material octachloropropane have been analysed. Calculations of micro-strains and measurement of c-axis orientations have enabled the processes influencing fabric development to be distinguished, and the importance of dynamic recrystallization to be assessed. It was found that, in this material, inter-grain strain contrasts could be large, and the effect of grain boundary migration was to modify the fabric in a measurable way. A simple model for the driving force for grain boundary migration based on dislocation density contrasts, as controlled by intra-grain strains and grain orientations, is proposed and tested, with an 80% success rate for the mobile grain boundaries studied.

Original languageEnglish
Pages (from-to)527-542
Number of pages16
JournalJournal of Structural Geology
Volume8
Issue number5
DOIs
Publication statusPublished - 1 Jan 1986
Externally publishedYes

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