Characterization and Modeling of Twinning in a Titanium Alloy Ti-6Al-4V

Abstract:

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The twinning behavior of a commercial Ti-6Al-4V alloy is studied using a combined experimental and numerical approach. An extensive microstructural investigation was performed to identify and quantify the active twin systems. The mechanical behavior as a function of initial texture and strain rate was then modeled using a visco-plastic self-consistent crystal plasticity code (VPSC7). Earlier obtained quasi-static and dynamic data served to fit the parameters of the model, giving good agreement. However, even if the model gave qualitatively good predictions of the stress-strain curves and the texture evolution for the different loadings, the calculated twin fractions differed considerably of the experimental results.

Info:

Periodical:

Materials Science Forum (Volumes 702-703)

Edited by:

Asim Tewari, Satyam Suwas, Dinesh Srivastava, Indradev Samajdar and Arunansu Haldar

Pages:

237-240

DOI:

10.4028/www.scientific.net/MSF.702-703.237

Citation:

F. Coghe et al., "Characterization and Modeling of Twinning in a Titanium Alloy Ti-6Al-4V", Materials Science Forum, Vols. 702-703, pp. 237-240, 2012

Online since:

December 2011

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Price:

$35.00

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