Abstract
Definitive evidence from both electron backscattered diffraction and transmission electron microscopy is shown for the existence of twinning as a rare deformation twinning mode in coarse-grained commercial purity titanium after room temperature ballistic impact testing at 103 s−1. Non-Schmid-based twin-type selection is demonstrated for and the conjugate deformation twinning modes in this material within grains where the c-axis is closely aligned to the loading direction. Limited Schmid-based twin variant selection is shown for and deformation twinning modes in this material. The occurrence of high area fractions of twinning has relevance for high strain rate plasticity modelling of grains of textured titanium, compressed parallel to their c-axes.
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