Author:
Matterstock B.,Saada G.,Bonneville J.,Martin J. L
Abstract
ABSTRACTThe characterisation of dislocation mechanisms in connection with macroscopic mechanical properties are usually performed through transient tests, such as strain-rate jumps, load relaxations or creep experiments. The present paper includes a careful and complete theoretical analysis of the relaxation and the creep kinetics. We experimentally show that the plastic strain-rate is continuous at the transition between constant strain-rate conditions and both load relaxation and creep test. The product of the plastic strain-rate at the onset of the transient test () with the characteristic time (tk) of the transient is found to be independent of , as theoretically expected. This is a clear indication that the assumptions underlying the theoretical analysis are relevant.
Publisher
Springer Science and Business Media LLC
Cited by
3 articles.
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1. Characterizing thermally activated dislocation mobility;Journal of Alloys and Compounds;2004-09
2. The role of thermal activation in the strength anomaly of Ni3Al;Intermetallics;2000-09
3. From the Physics of Plastic Flow to Constitutive Equations;Multiscale Phenomena in Plasticity: From Experiments to Phenomenology, Modelling and Materials Engineering;2000