Effect of recrystallization on tensile behavior, texture, and anisotropy of Ti-3Al-2.5 V cold pilgered tubes

Abstract : The recrystallized volume fraction of Ti 3Al 2.5aˆV seamless tubes is measured using electron BackScatter diffraction (EBSD) after annealing under various conditions. Standard tensile tests and contractile strain ratio (CSR) measurements are carried out in order to analyze the effect of recrystallization on the tensile behavior and the anisotropy of the tubes. The tensile tests show anomalous yield-point phenomena, which become stronger when the recrystallized fraction is increased. CSR value changes through recrystallization, from 0.8 in the cold worked stress relieved (CWSR) state to 1.1 in the fully recrystallized structure. Orientation distribution functions (ODFs) calculated from X-ray data reveal a decay in the intensity of the crystallographic texture as recrystallization advances. This can explain the tendency toward isotropy when complete recrystallization is achieved
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Nicolás Bayona-Carrillo, Nathalie Bozzolo, Jean-Jacques Fundenberger, Bertrand Thomas, Patrick Camelin, et al.. Effect of recrystallization on tensile behavior, texture, and anisotropy of Ti-3Al-2.5 V cold pilgered tubes. Advanced Engineering Materials, Wiley-VCH Verlag, 2011, 13 (5), pp.383-387. ⟨10.1002/adem.201000328⟩. ⟨hal-00595335⟩

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