Hello, I am studying a refractory metal Laves phase (Cr-Cr2X-based) system.
My alloys arc arc melted an annealed. Hence it has a typical dendritic
microstructure. The two phases in the material are Cr-rich and the
intermetallic Cr2X. The Cr phase has a bcc and the intermetallic has a
complex C14 (Strukturbericht designation) crystal structures.
Now I am a GSAS user. In doing structure refinement of my system using
Rietveld method, the problem that I am having, currently, is that I am not
able to fit the intensities of all the peaks present, particularly the
strongest relections from the Cr-peaks and some peaks of the other Laves
phase, which is why I am only reading off the lattice parameters from my
fit and nothing else apart from that. I have not tried imposing any
'preferred orientation' on the material, however, since mine one is simply
as-cast and annealed.
Can you suggest a way out to make this work, please?
kind regards
--
Ayan Bhowmik
PhD student
Rolls Royce UTP
Department of Materials Science and Metallurgy
University of Cambridge, Cambridge, UK
