| Autor: |
Semenova, I., Raab, G., Valiev, R. |
| Zdroj: |
Nanotechnologies in Russia; May2014, Vol. 9 Issue 5/6, p311-324, 14p |
| Abstrakt: |
The work presents the results of recent studies of nanostructured titanium and its alloy of the grade VT-6 (Ti-6Al-4V), in which we managed, using the methods of severe plastic deformation (SPD), to obtain ultra-fine-grained (UFG) states and form other nanostructured elements as nanodispersed particles of secondary phases, nonequilibrium grain boundaries, and dislocation substructures. Special attention was paid to equal-channel angular pressing (ECAP) and its modifications in combination with thermal and thermomechanical treatments, which enable one to obtain UFG alloys in the form of elongated rods. The peculiarities of grinding the microstructure in titanium and binary alloy VT-6 in dependence on the deformation technological setup have been established. The principles of nanostructuring to enhance strength, plasticity, and fatigue life have been suggested. The results of studies of the mechanical properties of the UFG VT-6 alloy have demonstrated the high efficiency of its application in the manufacture of articles with enhanced service parameters on the example of compressor blades of a gas-turbine engine (GTE). The possibilities of scaling the ECAP process to implement the commercial manufacture of the new material have been examined. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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