| Numéro |
J. Phys. Colloques
Volume 51, Numéro C1, Janvier 1990
Proceeding of the International CongressIntergranular and Interphase Boundaries in materials |
|
|---|---|---|
| Page(s) | C1-605 - C1-610 | |
| DOI | https://doi.org/10.1051/jphyscol:1990195 | |
J. Phys. Colloques 51, C1-605-C1-610 (1990)
DOI: 10.1051/jphyscol:1990195
1 IBM Corporation, General Products Division, San Jose, CA 95123, U.S.A.
2 Departments of Materials Science and Mechanical Engineering, University of Southern California, Los Angeles, CA 90089-1453, U.S.A.
DOI: 10.1051/jphyscol:1990195
CYCLIC GRAIN BOUNDARY MIGRATION AND CAVITATION IN THE PRESENCE OF DISPERSED PRECIPITATE PARTICLES
V. RAMAN1 et T.G. LANGDON21 IBM Corporation, General Products Division, San Jose, CA 95123, U.S.A.
2 Departments of Materials Science and Mechanical Engineering, University of Southern California, Los Angeles, CA 90089-1453, U.S.A.
Abstract
The importance of grain boundary processes operating during high temperature cyclic deformation has been studied in several pure metals and solid solution alloys. In this paper, the role of these processes was studied during cyclic deformation of an Al-Mg-Fe alloy containing a distribution of Fe-rich precipitate particles. It is shown that, as in pure metals, grain boundary migration takes place to significant amounts in this alloy, and the migration of the grain boundaries leads to a well defined orthogonal boundary configuration after large numbers of test cycles. Grain boundary cavitation takes place at the migratory positions after each cycle, as noted also in an earlier study of an Al-Mg solid solution alloy.