SAED and HREM Results Suggest a NiTi B19' Based Superstructure for CuZr Martensite
EMAT, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
The martensitic phases in stoichiometric CuZr have been investigated by SAED and HREM. Detailed diffraction tilt series reveal a superstructure of the B19' (NiTi type) unit cell to be the major phase which also exhibits multiple microtwinning within one martensite plate. In some plates evidence for the basic B19' structure is found. From HREM a confirmation of the unit cell symmetry and dimensions for the superstructure was obtained and a suggestion for the type of shuffles yielding the superstructure could be given.
© EDP Sciences