Strain hardening in Ni3 (Al, Hf)

P. SPÄTIG; J. BONNEVILLE; J.-L. MARTIN

doi:doi:10.1051/jp4:1993769

Numéro		J. Phys. IV France Volume 03, Numéro C7, Novembre 1993 The 3rd European Conference on Advanced Materials and Processes Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés


Page(s)		C7-445 - C7-448
DOI		https://doi.org/10.1051/jp4:1993769

The 3rd European Conference on Advanced Materials and Processes
Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés

J. Phys. IV France 03 (1993) C7-445-C7-448
DOI: 10.1051/jp4:1993769

Strain hardening in Ni₃ (Al, Hf)

P. SPÄTIG, J. BONNEVILLE and J.-L. MARTIN

Ecole Polytechnique Fédérale de Lausanne, Département de Physique, Institut de Génie Atomique, 1015 Lausanne, Switzerland

Abstract
A method of repeated stress relaxations is used to determine the strain-hardening that takes place during stress relaxation tests performed at different temperatures and for various crystallographic deformation axises. It is shown that strain hardening for stress relaxation conditions is substantially higher than for constant strain-rate deformation conditions. This behaviour is found to be more and more pronounced with increasing temperatures. It is suggested that strain-hardening is not dislocation substructure dependent but is inherent to dislocation motion.