Origin of dislocations within tensile and compressive twins in pure textured Zr

Dislocations and twins play an important role in the plastic deformation and hardening response of Zr. At 77K, rolled Zr deforms by {112¯2}〈112¯3¯〉 compressive twins and {101¯2}〈101¯1¯〉 tensile twins, depending upon the orientation of the compressive axis with respect to the basal pole texture of the specimen. Here, for the first time, detailed transmission electron microscopy characterization of dislocations within the twins themselves – with …