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Softening behavior of Ti6Al4V alloy during hot deformation
conference contribution
posted on 2015-01-01, 00:00 authored by Paul Souza, Hossein BeladiHossein Beladi, R K Singh, Bernard RolfeBernard Rolfe, Peter HodgsonPeter HodgsonThe effect of strain rate and strain on the hot compression behavior of Ti6Al4V has been analysed to understand the microstructural evolution and restoration behavior. Cylindrical samples with partially equiaxed grains were deformed in the α+β region at different thermo-mechanical
conditions. EBSD has been used to study the microstructural evolution and the flow softening mechanisms. The microstructural evolution showed a complex restoration behaviour, where both fragmentation and nucleation of new grains have been observed. The volume fraction of the equiaxed grains increased with an increase in the strain, but decreased with the strain rate. At the same time, the average grain size of the equiaxed grains decreased with an increase in both the strain and strain rate. The measured activation energy for deformation revealed a good agreement with reported values in the literature.
conditions. EBSD has been used to study the microstructural evolution and the flow softening mechanisms. The microstructural evolution showed a complex restoration behaviour, where both fragmentation and nucleation of new grains have been observed. The volume fraction of the equiaxed grains increased with an increase in the strain, but decreased with the strain rate. At the same time, the average grain size of the equiaxed grains decreased with an increase in both the strain and strain rate. The measured activation energy for deformation revealed a good agreement with reported values in the literature.
History
Event
Light Metals Technology. Conference (7th : 2015 : Port Elizabeth, South Africa)Pagination
407 - 412Publisher
Trans Tech PublicationsLocation
Port Elizabeth, South AfricaPlace of publication
Basel, SwitzerlandStart date
2015-07-27End date
2015-07-29Language
engPublication classification
E Conference publication; E1 Full written paper - refereedCopyright notice
2015, Trans Tech PublicationsEditor/Contributor(s)
H ChikwandaTitle of proceedings
Proceedings of the 7th International Light Metals Technology Conference 2015Usage metrics
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