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Prediction of Microstructure During High Temperature Forming of Ti-6Al-4V Alloy

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Abstract:

Prediction of final microstructures after high temperature forming of Ti-6Al-4V alloy was´attempted in this study. Using two typical microstructures, i.e., equiaxed and Widmanstätten microstructures, compression test was carried out up to the strain level of 0.6 at various temperatures (700 ~ 1100°C) and strain rates (10-4 ~ 102/s). From the flow stress-strain data, parameters such as strain rate sensitivity (m) and activation energy (Q) were calculated and used to establish constitutive equations for both microstructures. Then, finite element analysis was performed to predict the final microstructure of the deformed body, which was well accorded with the experimental results.

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Info:

Periodical:

Materials Science Forum (Volumes 449-452)

Pages:

189-192

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.449-452.189

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Online since:

March 2004

Authors:

You Hwan Lee, T.J. Shin, Jong Taek Yeom, Nho Kwang Park, S.S. Hong, In Ok Shim, Sang Moo Hwang, Chong Soo Lee

Keywords:

Finite Element Analysis (FEA), Flow Softening, Globularization, Microstructure, Ti6Al4V Alloy

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© 2004 Trans Tech Publications Ltd. All Rights Reserved

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