Wrought intermetallic titanium ortho alloy doped with yttrium

Part 1. Research on ingot microstructure and rheological curves plotting
Alexeev E.B., Nochovnaya N.A., Novak A.V., Panin P.V.
UDC
669.295
DOI
10.18577/2307-6046-2018-0-6-12-21
Article PDF (Russian) (1.08 MB)
How to cite
Alexeev E.B., Nochovnaya N.A., Novak A.V., Panin P.V. Wrought intermetallic titanium ortho alloy doped with yttrium. Part 1. Research on ingot microstructure and rheological curves plotting // Proceedings of VIAM. 2018. No. 6. DOI: 10.18577/2307-6046-2018-0-6-12-21. URL: https://test.viam.ru/en/journal/2018/6/2
Keywords
intermetallic titanium alloy, ortho phase Ti2AlNb, rare-earth elements (REE), yttrium, microstructure, deformation treatment, differential scanning calorimetry curves (DSC), rheological curves.
Abstract

The article contains the results of microstructure investigations in the cross section of an ingot from wrought intermetallic titanium ortho alloy doped with yttrium. The effect of heat treatment in a two-phase (b/В2+α2)-area on microstructure of the yttrium doped ortho alloy ingot has been studied. Thermal analysis has been performed with differential scanning calorimetry (DSC) curves plotting which specify phase transformation temperatures of the alloy in focus. Rheological curves for the upset cylindrical samples have been plotted, which revealed deformation strain reduction with upsetting temperature increase from 850 to 1050°C. It has been shown that doping of ortho alloys with rare-earth elements (REE) results in rolling temperature increase.

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