Radiation-induced segregation in dilute Re-W solid solutions
  The occurrence of segregation in highly dilute alloys under irradiation is an unusual phenomenon that has so far eluded theoretical explanation. Using ab initio calculations, we are able to explain the origin of radiation-induced rhenium segregation in dilute tungsten-rhenium alloys. 
Jan S. Wrobel, Duc Nguyen-Manh, Krzysztof J. Kurzydlowski, Sergei L.   Dudarev
cond-mat.mtrl-sci