%0 Journal Article
%T Twinning behavior of orthorhombic-¦Á¡± martensite in a Ti-7.5Mo alloy
%A Dehai Ping
%A Ivan Gutierrez-Urrutia
%A Koichi Tsuchiya
%A Satoshi Emura
%A Tianwei Liu
%A Toru Hara
%A Xiaohua Min
%A Xin Ji
%J Science and Technology of Advanced Materials
%D 2019
%R https://doi.org/10.1080/14686996.2019.1600201
%X ABSTRACT Deformation microstructure of orthorhombic-¦Á¡± martensite in a Ti-7.5Mo (wt.%) alloy was investigated by tracking a local area of microstructure using scanning electron microscopy, electron back-scattered diffraction, and transmission electron microscopy. The as-quenched ¦Á¡± plates contain {111}¦Á¡±-type I transformation twins generated to accommodate transformation strain from bcc-¦Â to orthorhombic-¦Á¡± martensite. Tensile deformation up to strain level of 5% induces {112}¦Á¡±-type I deformation twins. The activation of {112}¦Á¡±-type I deformation twinning mode is reported for the first time in ¦Á¡± martensite in ¦Â-Ti alloys. {112}¦Á¡±-type I twinning mode was analyzed by the crystallographic twinning theory by Bilby and Crocker and the most possible mechanism of atomic displacements (shears and shuffles) controlling the newly reported {112}¦Á¡±-type I twinning were proposed.
%U https://www.tandfonline.com/doi/full/10.1080/14686996.2019.1600201