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Title: Hot compression behaviour of two-phase Ti-6Al-4V : experiments and state-variable modelling
Author: Mulyadi
Current Institution: Open University
Date of Award: 2007
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The flow stress behaviour of two-phase Ti-6AI-4V and its individual α and β phases has been characterised during isothermal forging at temperatures of 850-1050°C and strain rates of 0.3-0.003/s. The influence of initial pre-form microstructure has also been investigated by heat-treating the as-received globular microstructure to produce an acicular β-transformed microstructure. It is found that flow stress behaviour exhibits a strong dependence on working temperature and imposed strain rate for the two-phase globular, two-phase acicular and single a-phase materials. However, for the single β-phase, steady state stress is found to be relatively constant with increasing temperature for the range of 925-975°C and strain rates of 0.3-0.003/s.
Supervisor: Not available Sponsor: Not available
Qualification Name: OPEN UNIVERSITY, 2007 Qualification Level: Doctoral
EThOS ID:  DOI: Not available