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Revue de Physique Appliquée
Article . 1981 . Peer-reviewed
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Glissements aux joints de phases de l'eutectique lamellaire Al-Al2Cu déformé à chaud par cisaillement

Authors: Gaymard, P.; Bonnet, R.;

Glissements aux joints de phases de l'eutectique lamellaire Al-Al2Cu déformé à chaud par cisaillement

Abstract

Des essais de cisaillements cycliques, a des temperatures variant de 360 °C a 460 °C, ont ete realises sur l'eutectique lamellaire Al-Al2Cu(θ) obtenu par solidification dirigee. La cission appliquee est parallele aux joints Al/θ et a la direction de croissance. L'experience indique que la contrainte d'ecoulement du materiau correspondant a chaque cycle ne depend pratiquement que de la temperature et de la vitesse de charge actuelles du materiau. Le glissement macroscopique g resulte de glissements interfaciaux tres localises, delimitant le plus souvent des paquets de lamelles en nombre pair. Ces glissements interfaciaux sont tous proportionnels a g. L'utilisation d'une loi constitutive analogue a celle de Mukherjee, Bird et Dorn (1969) conduit a un exposant m egal a 0,26 pour la vitesse de glissement g et une energie d'activation apparente voisine de 128 kJ.mole-1.

Country
France
Keywords

plastic deformation, constitutive law, applied shear stress, crystallographic shear, loading rate, high temperature cyclic shear, interfaces, 633 to 733K, aluminium alloys, [ PHYS.HIST ] Physics [physics]/Physics archives, localized interfacial slidings, copper alloys, sliding rate, Al Al sub 2 Cu, aluminium, deformation, unidirectionally solidified lamellar eutectic, growth direction, eutectic alloys, activation energy, [PHYS.HIST]Physics [physics]/Physics archives, flow stress, phase boundaries, macroscopic sliding, [PHYS.HIST] Physics/Physics archives

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
7
Average
Average
Average
Green
bronze
Related to Research communities
Energy Research