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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 Hodgson
The 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.

History

Event

Light Metals Technology. Conference (7th : 2015 : Port Elizabeth, South Africa)

Pagination

407 - 412

Publisher

Trans Tech Publications

Location

Port Elizabeth, South Africa

Place of publication

Basel, Switzerland

Start date

2015-07-27

End date

2015-07-29

Language

eng

Publication classification

E Conference publication; E1 Full written paper - refereed

Copyright notice

2015, Trans Tech Publications

Editor/Contributor(s)

H Chikwanda

Title of proceedings

Proceedings of the 7th International Light Metals Technology Conference 2015

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