Omega-like diffuse X-ray scattering in Ti–V caused by static lattice distortions
The diffuse scattering of body-centered cubic ?-Ti–V was measured using high-energy synchrotron X-rays and two-dimensional detectors. The study included in situ experiments of the equilibrium ?-phase and room temperature measurements of the quenched metastable state. The kinematical X-ray scattering revealed details in reciprocal space that could not be detected by the electron diffraction employed in previous studies. The signal was analyzed using a statistical thermodynamic approach based on physically motivated parameters. The characteristic features attributed to an ?-like structure or a “diffuse ?-phase” in the past are explained by static lattice distortions due to atomic size mismatch.
I.B. RamsteineraEmail:ramstein@seas.harvard.edu?O. Shchygloa?M. Mezgera?A. Udyanskya?V. Bugaeva?S. Schdera?H. Reicherta?H. Doscha
[a]Max-Planck-Institut für Metallforschung, Heisenbergstrasse 3, 70569 Stuttgart, Germany;[b]European Synchrotron Radiation Facility (ESRF), 38043 Grenoble, France
