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2ème Année CPST
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Détail de l'indexation
M000492
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Ouvrages de la bibliothèque en indexation M000492
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Titre : Etude du comportement en fatigue-corrosion de l'alliage AlCuMg (2024 T3) Type de document : texte imprimé Auteurs : Cheriet, Nabil, Auteur ; Souami, N., Directeur de thèse Editeur : [S.l.] : [s.n.] Année de publication : 1992 Importance : 95 f. Présentation : ill. Format : 30 cm Note générale : Mémoire de Magister: Métallurgie: Alger, Ecole Nationale Polytechnique: 1992
Bibliogr. [6] f. Annexe [7] fLangues : Français (fre) Mots-clés : Alliage -- Corrosion; Alliage -- Fatigue Index. décimale : M000492 Résumé :
La présente recherche, concerne l'étude du comportement en fatigue-corrosion de l'alliage d'aluminium 2024 T351 qui est de plus en plus utilisé en construction aéronautique.
En plus des mesures électrochimiques convenables, permettant d'étudier le phénomène de corrosion localisé, on a effectué des essais de fatigue-corrosion en vue d'une part de comparer les durées de vie et les limites d'endurance en flexion rotative à l'air et dans une solution aqueuse à 3,5% NaCl sous une fréquence constante, et d'autre part d'essayer de donner une explication cohérente du comportement du matériau à travers l'évaluation des paramètres électrochimiques enregistré durant les essais.
Il semble que la capacité du matériau à la dissolution et à la repassivation est largement responsable de son comportement.
Cette capacité varie notablement en fonction des conditions de chargement et de la nature du milieu corrosif.
Si l'alliage est assujetti à des solutions aérées en potentiel libre, celui-ci présentera une susceptibilité prononcée à la corrosion par piqûre.
en outre, le phénomène de piqûration sera également observé pour des valeurs de potentil plus négatives que celle du potentiel de piqûration.
Ce travail a été complété par une étude fractographique qui a permis de mieux comprendre le rôle du milieu corrosif dans l'amorçage des fissures de fatigue.
Enfin, l'influence de l'environnement sur la limite de fatigue est notable.
Cependant la durée de vie en fatigue pourra toujours être amélioré par une protection cathodique.Etude du comportement en fatigue-corrosion de l'alliage AlCuMg (2024 T3) [texte imprimé] / Cheriet, Nabil, Auteur ; Souami, N., Directeur de thèse . - [S.l.] : [s.n.], 1992 . - 95 f. : ill. ; 30 cm.
Mémoire de Magister: Métallurgie: Alger, Ecole Nationale Polytechnique: 1992
Bibliogr. [6] f. Annexe [7] f
Langues : Français (fre)
Mots-clés : Alliage -- Corrosion; Alliage -- Fatigue Index. décimale : M000492 Résumé :
La présente recherche, concerne l'étude du comportement en fatigue-corrosion de l'alliage d'aluminium 2024 T351 qui est de plus en plus utilisé en construction aéronautique.
En plus des mesures électrochimiques convenables, permettant d'étudier le phénomène de corrosion localisé, on a effectué des essais de fatigue-corrosion en vue d'une part de comparer les durées de vie et les limites d'endurance en flexion rotative à l'air et dans une solution aqueuse à 3,5% NaCl sous une fréquence constante, et d'autre part d'essayer de donner une explication cohérente du comportement du matériau à travers l'évaluation des paramètres électrochimiques enregistré durant les essais.
Il semble que la capacité du matériau à la dissolution et à la repassivation est largement responsable de son comportement.
Cette capacité varie notablement en fonction des conditions de chargement et de la nature du milieu corrosif.
Si l'alliage est assujetti à des solutions aérées en potentiel libre, celui-ci présentera une susceptibilité prononcée à la corrosion par piqûre.
en outre, le phénomène de piqûration sera également observé pour des valeurs de potentil plus négatives que celle du potentiel de piqûration.
Ce travail a été complété par une étude fractographique qui a permis de mieux comprendre le rôle du milieu corrosif dans l'amorçage des fissures de fatigue.
Enfin, l'influence de l'environnement sur la limite de fatigue est notable.
Cependant la durée de vie en fatigue pourra toujours être amélioré par une protection cathodique.Exemplaires
Code-barres Cote Support Localisation Section Disponibilité Spécialité Etat_Exemplaire M000492 M000492 Papier Bibliothèque centrale Mémoire de Magister Disponible Documents numériques
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