摘要
The addition of rare earth (RE) elements to Mg alloys can result in weaker hot deformation and recrystallization textures than those present in conventional Mg alloys. Recent studies of hot-rolled Mg-Nd binary alloys suggest that the texture weakening is influenced by the presence of second-phase particles. In this follow-up study, these particles are characterized morphologically, chemically, and crystallographically using transmission electron microscopy (TEM), energy-dispersive spectroscopy (EDS), and X-ray diffraction (XRD). The particles were observed to have a faceted morphology, particularly in the richer concentrations investigated, a composition of approximately 25 at.% Nd (a stoichiometry of Mg3Nd) and an ordered cubic crystal structure (m3m point group) with a lattice parameter of approximately a approximate to 10.9 angstrom, which is distinct from that of the equilibrium Mg3Nd phase.
- 出版日期2012-1-30