| Issue |
Rev. Metall.
Volume 107, Number 2-3, February 2010
Fatigue damage, measurements and monitoring (Part 2)
|
|
|---|---|---|
| Page(s) | 83 - 91 | |
| DOI | https://doi.org/10.1051/metal/2010009 | |
| Published online | 11 May 2010 | |
Effet du procédé de Compaction Isostatique à Chaud sur les propriétés à la fatigue polycyclique d’un alliage cupro-aluminium de fonderie*
Effect of Hot Isostatic Pressing process on High Cycle Fatigue properties of a cast aluminium bronze
1
LBMS, ENSIETA/UBO/ENIB, 2 rue François Verny, 29806
Brest, France
2
DCNS BU Propulsion - CESMAN, Indret, 44620
La Montagne,
France
3
DGA/DET/CEP/MC/TCM, 00470
Armées, France
Reçu :
20
Janvier
2010
Pour améliorer la tenue mécanique à la fatigue polycyclique des matériaux de fonderie, la Compaction Isostatique à Chaud (CIC) peut être utilisée. Elle consiste en un traitement thermomécanique des pièces moulées afin de refermer, complètement ou partiellement, les défauts initiaux qu’elles contiennent. On propose ici d’utiliser des mesures d’auto-échauffement sous chargements cycliques et un modèle associé pour caractériser le gain en tenue à la fatigue apporté par le procédé CIC sur un alliage cupro-aluminium de fonderie.
Abstract
In order to improve mechanical resistance regarding to High Cycle Fatigue, Hot Isostatic Pressing (HIP) process appears to be useful. It consists in applying a thermomechanical treatment on cast components to eliminate cast defects. To highlight benefits of such a process on HCF properties of a cast aluminium bronze, temperature measurements under cyclic loadings on specimens are performed. In this paper, this method called “self-heating tests” is associated to a probabilistic two-scale model which takes into account cast defects. This framework enables to quantify an increase of about 20% in fatigue resistance of a cast aluminium bronze.
© EDP Sciences
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