Inaekyan, K. E., Brailovski, Vladimir, Prokoshkin, S. D., Korotitskiy, A. V. and 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 Download (165kB) | Preview |
Abstract
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.
| Item Type: | Conference proceeding |
|---|---|
| ISBN: | 978-2-7598-0480-1 |
| Editors: | Editors ORCID Sittner, P. UNSPECIFIED Paidar, V. UNSPECIFIED Heller, L. UNSPECIFIED Seiner, H. UNSPECIFIED |
| Additional Information: | Identifiant de l'article: 05011 |
| Professor: | Professor Brailovski, Vladimir |
| Affiliation: | Génie mécanique |
| Date Deposited: | 29 Oct 2012 20:48 |
| Last Modified: | 26 Apr 2016 13:30 |
| URI: | https://espace2.etsmtl.ca/id/eprint/2434 |
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