Inaekyan, K. E., Brailovski, Vladimir, Prokoshkin, S. D., Korotitskiy, A. V. et Chernavina, A..
2009.
« Microhardness of binary near-equiatomic Ti-Ni alloys after severe cold rolling and post-deformation annealing ».
In 8th European Symposium on Martensitic Transformations (ESOMAT) (Prague, Czech Republic, Sept. 7-11, 2009)
Cedex A, France : E D P Sciences.
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Microhardness of binary near-equiatomic Ti-Ni alloys after severe cold rolling and post-deformation annealing.pdf Télécharger (165kB) | Prévisualisation |
Résumé
Comparative HV-microhardness and TEM studies of Ti-50.0at%Ni and 50.26at%Ni alloys subjected to cold-rolling (e=0.3, 1 and 1.72) and post-deformation annealing at 100-700°C (1 hour) are presented. Based on the TEM-measured grain size data for Ti-50.0at%Ni alloy as a function of an annealing temperature (TPDA) higher than 250oC, it was possible to evaluate the grain size (d) of the near-equiatomic Ti-Ni alloys at TPDA<250oC, using exponential extrapolation distribution of the d-TPDA data. It was shown that below a critical grain size (dc = 10 nm), the smaller the grain size (as a result of the decrease in annealing temperature), the lower the microhardness. This softening phenomena can be described, with good correlation between the approximation and experimental data, by the normal-abnormal Hall-Petch transition caused by the influence of the intercrystalline regions and by the melting temperature grain-size dependence.
| Type de document: | Compte rendu de conférence |
|---|---|
| ISBN: | 978-2-7598-0480-1 |
| Éditeurs: | Éditeurs ORCID Sittner, P. NON SPÉCIFIÉ Paidar, V. NON SPÉCIFIÉ Heller, L. NON SPÉCIFIÉ Seiner, H. NON SPÉCIFIÉ |
| Informations complémentaires: | Identifiant de l'article: 05011 |
| Professeur: | Professeur Brailovski, Vladimir |
| Affiliation: | Génie mécanique |
| Date de dépôt: | 29 oct. 2012 20:48 |
| Dernière modification: | 26 avr. 2016 13:30 |
| URI: | https://espace2.etsmtl.ca/id/eprint/2434 |
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