Microstructure of wrought, laser and electron beam processed NARloy-Z (Cu-3wt% Ag-0.5 wt% Zr) was investigated for thermal stability at elevated temperatures 539-760 degrees C (1100 to 1400 degrees F) up to 94 h. Optical and scanning electron microscopy and electron probe microanalysis were employed for studying microstructural evolution and kinetics of precipitation. Grain boundary precipitation and precipitate free zones (PFZs) were observed in the wrought alloy after exposing to temperatures above 605 degrees C (1120 degrees F). Fine-grained microstructure observed in the laser and electron beam (EB) processed NARloy-Z was much more stable at elevated temperatures. Tensile properties of laser and EB glazed NARloy-Z can be tailored by giving suitable heat treatments and maintaining the same strength with increased ductility. Microstructural changes correlated well with hardness measurements and mechanical properties.