| Auteur | Rechercher : Bejjani, R.; Rechercher : Balazinski, M.; Rechercher : Attia, H.1; Rechercher : Aramesh, M.; Rechercher : Kishawy, H. |
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| Affiliation | - Conseil national de recherches du Canada. Aérospatiale
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| Format | Texte, Article |
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| Conférence | 26th Annual Technical Conference of the American Society for Composites 2011 and the 2nd Joint US-Canada Conference on Composites, 26 September 2011 through 28 September 2011, Montreal, QC |
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| Sujet | Adiabatic shear band; Ballistic experiment; Ceramic particle; Cutting experiment; Equi-axed grains; Experimental studies; High potential; High strain rates; High strains; Imaging technology; Impact test; Plastic instabilities; Segmented chips; Shear localizations; Shear zone; TiC particles; Titanium metal matrix composites; Dynamic recrystallization; Experiments; Industrial applications; Titanium; Titanium carbide; Strain rate |
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| Résumé | Titanium Metal Matrix Composite (TiMMC) is a new class of material, which has a high potential in industrial applications. The TiC ceramic particles in the titanium matrix improve its physical properties; however they also cause high abrasive wear of the cutting tool during machining. Machining TiMMC produces segmented chips which have been attributed to "plastic instability". However their cause and mechanism are not well studied for cutting experiments. The segmentations are characterized by Adiabatic Shear Bands (ASB). Extensive theoretical and experimental studies toward an improved understanding of the shear localization started since the early seventies. ASB are observed to occur in many materials when subjected to high strain, and high strain rates. Most studies of ASB were done for impact tests. Lately due to the advances in new imaging technology, ASB have been more thoroughly studied. Accordingly, Dynamic Recrystallization (DRX) seems to be a phenomenon preceding ABS, and it results in very small equiaxed grains. Furthermore super high strain rates have been identified in the shear zones. In ballistic experiments ASB have been identified as a precursor to fracture, which outlines the importance of this phenomenon. This paper focuses on the understanding of the segmentation phenomenon and the ASB when machining TiMMC, while observing the effects of the TiC particles on the ASB. |
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| Date de publication | 2011 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21271073 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 20bc7f7c-f5aa-49a1-a5e8-fb5a43716b4a |
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| Enregistrement créé | 2014-03-24 |
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| Enregistrement modifié | 2020-04-21 |
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