The enthalpy of solution for solid binary alloys of two 4d-transition metals

摘要: Abstract A demonstration is given how to derive the enthalpy of solid solution alloys two 4d transition metals for three main crystallographic structures, fcc, hcp and bcc. Because additional terms phases differs from that in corresponding liquid alloys. The first these, accounting elastic mismatch, can be estimated Eshelby/Friedel-type continuum theory. In our case we correct atomic size mismatch volume changes accompany formation second term accounts variation structure dependent energies (i.e. preference either bcc or type crystal structure) with average number electrons per atom. We an empirical curve these terms, which essentially based on theoretical results gives a fair account binary phase diagram characteristics.