Table of Contents
Textures and Microstructures
Volume 20, Issue 1-4, Pages 179-193
http://dx.doi.org/10.1155/TSM.20.179

Microstructure and Microtexture Evolution During High Temperature Low Cycle Fatigue of Nickel

Institut für Metallkunde und Metallphysik, RWTH Aachen, Aachen W-5100, Germany

Copyright © 1993 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

The development of microstructure, texture, misorientation and grain boundary character during cyclic deformation of Nickel at elevated temperatures was investigated. At high numbers of cycles grain boundaries align with the maximum shear stress. Texture and microstructure change significantly and low ∑CSL boundaries with (111) rotation axes emerge. The Schmid factor increases with progressing deformation but Sachs- and Taylor-type deformation modelling fail to predict the actual texture change. It is proposed to attribute the observed texture and microstructure development to an interaction of deformation mechanisms with grain boundary motion.