Reference : Prediction of the Tension/Compression asymmetry of ECAP processed FCC material using ...
Scientific journals : Article
Engineering, computing & technology : Materials science & engineering
Prediction of the Tension/Compression asymmetry of ECAP processed FCC material using an integrated model based on dislocation and back-stress
Chen, Enze [> >]
Duchene, Laurent mailto [Université de Liège - ULiège > Département Argenco : Secteur MS2F > Département Argenco : Secteur MS2F >]
Habraken, Anne mailto [Université de Liège - ULiège > Département ArGEnCo > Département ArGEnCo >]
Verlinden, Bert [> >]
Materials Science Forum
Trans Tech Publications
[en] tension/compression asymmetry ; back-stress ; ECAP ; LIMARC
[en] In our recent work, a new integrated model was proposed to describe the back-stress evolution based on the dislocation substructure and texture. By relating the back-stress to the dislocation density in cell walls and in the cell interior, this model is able to capture the back-stress evolution of ECAP processed pure aluminium. In this paper, the model is used for another FCC material, namely copper. The aim is to check whether this model is able to predict the tension/compression asymmetry (due to the back-stress) of copper. The results show that this is indeed the case and it is also found that the strain rate ratio proposed in our previous work [1] is a function of the dislocation density ratio.
Online available since 2010/Dec/30 at
(C) (2011) Trans tech Publications, Switzerland

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