NickelMaghrebV1, Main, Exploration, bibRecord, 000E23

In situ deformation experiments on a γ/γ' superalloy Strengthening mechanisms

Identifieur interne : 000E23 ( Main/Exploration ); précédent : 000E22; suivant : 000E24

In situ deformation experiments on a γ/γ' superalloy Strengthening mechanisms

Auteurs : M. Benyoucef [Maroc] ; A. Coujou [France] ; B. Barbker [Maroc] ; N. Clement [France]

Source :

Materials science & engineering. A, Structural materials : properties, microstructure and processing [ 0921-5093 ] ; 1997.

RBID : Pascal:97-0530492

Descripteurs français

Pascal (Inist)
- Superalliage, Alliage base nickel, Métal renforcé dispersion, Phase gamma, Propriété mécanique, Déformation plastique, Dislocation, Durcissement déformation, Microstructure, TEM, Etude expérimentale, In situ, Alliage multiélément, 8140C.

English descriptors

KwdEn :
- Dislocations, Dispersion strengthened metal, Experimental study, Gamma phase, In situ, Mechanical properties, Microstructure, Multi-element alloys, Nickel base alloys, Plastic deformation, Strain hardening, Superalloys, TEM.

Abstract

Through in situ straining experiments performed at 850°C, on a γ/γ' MC2 superalloy in a transmission electron microscope (TEM), the elementary mechanisms that control deformation were identified. On the recorded dynamic sequences, it is shown that deformation preferentially localizes in channels perpendicular to the [100] traction axis. Expanding from small loops, the creation and propagation of dislocations is observed. Both cross slip and climb events are observed on the moving dislocations which promote a tridimensionnal workhardening of these channels.

Affiliations:

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 000511
to stream PascalFrancis, to step Curation: 000556
to stream PascalFrancis, to step Checkpoint: 000516
to stream Main, to step Merge: 000E73
to stream Main, to step Curation: 000E23

Le document en format XML

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<term>Mechanical properties</term>
<term>Microstructure</term>
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<term>Propriété mécanique</term>
<term>Déformation plastique</term>
<term>Dislocation</term>
<term>Durcissement déformation</term>
<term>Microstructure</term>
<term>TEM</term>
<term>Etude expérimentale</term>
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<front><div type="abstract" xml:lang="en">Through in situ straining experiments performed at 850°C, on a γ/γ' MC2 superalloy in a transmission electron microscope (TEM), the elementary mechanisms that control deformation were identified. On the recorded dynamic sequences, it is shown that deformation preferentially localizes in channels perpendicular to the [100] traction axis. Expanding from small loops, the creation and propagation of dislocations is observed. Both cross slip and climb events are observed on the moving dislocations which promote a tridimensionnal workhardening of these channels.</div>
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In situ deformation experiments on a γ/γ' superalloy Strengthening mechanisms

In situ deformation experiments on a γ/γ' superalloy Strengthening mechanisms

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri