Nano-duplex alloys have a zero kelvin ground state involving phase separation, but favor grain boundary solute segregation at finite temperatures. Under normal processing conditions, these materials take on a unique stable nanoscale configuration, in which there are nanoscale grains decorated at the boundaries by solute, in equilibrium with second phase domains. Such alloys are stabilized against coarsening, and thus offer prospects for consolidation to bulk nanomaterials when they are prepared as powders. Additionally, some nano-duplex alloys can develop rapid transport paths if the second phase prefers to decorate particle surfaces, which offers new prospects for accelerated sintering. This talk will review the thermodynamics, the sintering, and the technological prospects for bulk nano-duplex alloys prepared through a powder route.