Microstructure features of failure and mechanical properties of ultra-fine grained Ti-6AL-4V ELI alloy at 300-77 K
Tabachnikova ED, Bengus VZ, Podolskiy AV, Smirnov SN, Csach K, Miskuf J, Saitova LR, Semenova IP, Valiev RZ (2008)
Publication Type: Journal article
Publication year: 2008
Journal
Book Volume: 4
Pages Range: 189-195
Journal Issue: 2
DOI: 10.1007/s10999-007-9036-0
Abstract
Experimental investigation of mechanical characteristics and failure regularities of the ultra-fine grained Ti-6Al-4V ELI alloy, produced by equal channel angular pressing (ECAP), have been carried out under the uniaxial tension at 300 and 77 K. These characteristics have been compared for the different structural states of the Ti-6Al-4V ELI alloy, distinguished by the average grain size and by the morphology of α and β phases. It has been established that the combination of the heat treatment, ECAP, and the extrusion of the Ti-6Al-4V ELI alloy leads to a considerable increase of the alloy's strength in comparison with the initial state (54% at 300 K and 78% at 77 K) with preserving the reasonable values of the ductility (3-4% elongation to the neck beginning and 5-10% to the failure). For all investigated structural states of the Ti-6Al-4V ELI alloy only ductile failure was observed at 300 and 77 K. The fracture surface consists of regions failed under normal and shear stresses. In shear failure regions of fracture surface only elongated dimples were present. © 2007 Springer Science+Business Media B.V.
Additional Organisation(s)
Involved external institutions
Institute of Experimental Physics / Ústav experimentálnej fyziky SAV
Slovakia (SK)
Ufa University of Science and Technology (UUST)
Russian Federation (RU)
B. Verkin Institute for Low Temperature Physics and Engineering (ILTPE) / Физико-технический институт низких температур имени Б. И. Веркина НАН Украины
Ukraine (UA)
Slovakia (SK)
Ufa University of Science and Technology (UUST)
Russian Federation (RU)
B. Verkin Institute for Low Temperature Physics and Engineering (ILTPE) / Физико-технический институт низких температур имени Б. И. Веркина НАН Украины
Ukraine (UA)
How to cite
APA:
Tabachnikova, E.D., Bengus, V.Z., Podolskiy, A.V., Smirnov, S.N., Csach, K., Miskuf, J.,... Valiev, R.Z. (2008). Microstructure features of failure and mechanical properties of ultra-fine grained Ti-6AL-4V ELI alloy at 300-77 K. International Journal of Mechanics and Materials in Design, 4(2), 189-195. https://dx.doi.org/10.1007/s10999-007-9036-0
MLA:
Tabachnikova, Elena D., et al. "Microstructure features of failure and mechanical properties of ultra-fine grained Ti-6AL-4V ELI alloy at 300-77 K." International Journal of Mechanics and Materials in Design 4.2 (2008): 189-195.
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