Abstract
Transmission electron microscopic studies of eutectic Ti68.38Fe28.61Sn3 upon 5% and 10% plastic deformation reveal slip transfer across the β-Ti/FeTi lamellae interface. Stroh's analysis suggests that addition of Sn to Ti70.5Fe29.5 increases the cleavage stress and reduces the slip stress around a dislocation pile-up at β-Ti/FeTi interface. The presence of ultrafine lamellar FeTi contributes strengthening whereas, dislocation slip is the origin of plasticity in high strength Ti-Fe-(Sn) composites.
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