Table of Contents
Textures and Microstructures
Volume 32, Issue 1-4, Pages 175-185
http://dx.doi.org/10.1155/TSM.32.175

Microstructure Evolution During Normal Grain Growth Under High Pressure in 2-D Aluminium Foils

1lnstitute of Solid State Physics, Russian Academy of Sciences, Chernogolovka 142432, Russia
2UNIPRESS, High Pressure Research Centre, Polish Academy of Sciences, Warsaw, Sokolowska 29 01-142, Poland

Accepted 28 September 1997

Copyright © 1999 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We investigated the effect of high hydrostatic pressure on the normal grain growth in 2-D aluminium foils. The time dependence of the mean grain area was obtained. It was shown that normal grain growth takes place both at atmospheric pressure and under high hydrostatic pressure. The grain growth rate decreases by a factor 1.3 under high pressure. The activation volume for grain growth was 0.13 of the atomic volume. It was shown that high pressure strongly influences the ratio oflow angle boundaries and general boundaries at the early stages of secondary recrystallization.