Abstract: Nickel-Chromium-Silicon alloys of the nominal composition, Ni.sub.(45-78) Cr.sub.(16-34) Si.sub.(6-21) in the form of thin foil are made ductile by the presence of appreciable amounts of an amorphous phase and a metastable, solid solution, microcrystalline single phase and are especially suitable for preplacement as preforms in a joining operation such as brazing. Up to abour 40 atomic percent of the nickel is replaceable with palladium.

Abstract: A brazing alloy composition consisting essentially of from about 17 to about 44 percent by weight of palladium, from about 4 to 11 percent by weight of chromium, from about 1 to about 4 percent by weight of silicon from about 1.5 to about 4 percent by weight of boron and the balance nickel is suitable for brazing in the temperature range of from about 1750.degree. F. to about 1850.degree. F. with a recommended brazing temperature of about 1800.degree. F. The brazing temperature of the brazing alloy of this invention is lower than the brazing temperatures of conventional Ni-base phosphorus-free brazing alloys and has good stress-rupture characteristics and oxidation resistance up to 1400.degree. F.