In-situ synchrotron high energy X-ray diffraction study of phase transformation of intermetallic Ti₃Sn

Ti₃Sn has received increasing attention as high damping metallic material. However, information of solid state transformation and crystal structure of Ti₃Sn were still incomplete. Here, in-situ synchrotron high energy XRD during heating/cooling and during uniaxial compressive loading were used to study the phase transformation of Ti₃Sn. Thermal-induced reversible phase transformation of Ti₃Sn was demonstrated, and it was found that such transformation could also be stress (strain) induced. Crystal structure, lattice parameters and atomic Wyckoff positions of new base-centered orthorhombic phase of Ti₃Sn were suggested based on Rietveld refinement of XRD profiles. The phase contents of Ti₃Sn during heating/cooling processes were also discussed.