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Evolution of lattice strain in Ti–6Al–4V during tensile loading at room temperature

✍ Scribed by Adam M. Stapleton; Seema L. Raghunathan; Ioannis Bantounas; Howard J. Stone; Trevor C. Lindley; David Dye

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
716 KB
Volume
56
Category
Article
ISSN
1359-6454

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✦ Synopsis

The evolution of intergranular lattice strains in a textured, forged bar (Bar) sample of the a À b titanium alloy Ti-6Al-4V has been characterised using in situ X-ray diffraction. A two-phase elastic-plastic self-consistent (EPSC) model has been developed to rationalise the results. Of the orientations analysed, it is found that the {2 0 0} b orientation is the most compliant and that load partitions to this orientation during plasticity. The results from the bar material have then been used to predict the response of unidirectionally rolled plate (UD) Ti-6Al-4V. It is predicted that the residual lattice strains in the f1 01 0g and f1 1 2 0g orientations will be significantly higher in the UD material.

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