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Hot deformation and recrystallization of a metastable beta titanium ingot
conference contribution
posted on 2016-05-02, 00:00 authored by Alireza Ghaderi, Peter HodgsonPeter Hodgson, Matthew BarnettMatthew BarnettHot deformation behavior and microstructure evolution of a coarse grain metastable beta titanium alloy (Ti-5Al-5Mo-5V-3Cr) was investigated using uniaxial compression testing followed by a subsequent beta annealing treatment. Compression testing was carried out at 720 °C and strain rates between 0.001-10 s-1 on samples with beta annealed condition and aged microstructure containing high volume fraction of relatively large alpha precipitates. The peak load of the aged samples are higher than the non-aged specimens but they show rather similar steady state flow stress. The subsequent beta annealing treatment on the compressed aged samples leads to breaking down the ingot microstructure and formation of a fully recrystallized beta phase with massive grain refinement (order of millimeter to ∼100 μm). However, after annealing such grain refinement is not seen for the non-aged samples except at high strain rates that showed partial and local recrystallization.
History
Event
Titanium. World Conference (13th : 2015 : San Diego, California)Pagination
765 - 769Publisher
WileyLocation
San Diego, Calif.Place of publication
London, Eng.Publisher DOI
Start date
2015-08-16End date
2015-08-20ISBN-13
9781119293668Language
engPublication classification
E Conference publication; E1 Full written paper - refereedCopyright notice
2016, WileyEditor/Contributor(s)
V Venkatesh, A Pilchak, J Allison, S Ankem, R Boyer, J Christodoulou, H Fraser, A Imam, Y Kosaka, H Rack, A Chatterjee, A WoodfieldTitle of proceedings
Ti-2015: Proceedings of the 13th World Conference on TitaniumUsage metrics
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