CuPNiSn amorphous alloys are good brazing materials at medium temperature for replacement of silver bearing brazing materials.The crystallization temperature,wettability,tensile strength of Cu-Cu joints and the micros...CuPNiSn amorphous alloys are good brazing materials at medium temperature for replacement of silver bearing brazing materials.The crystallization temperature,wettability,tensile strength of Cu-Cu joints and the microstructure of joints for three compositional series are reported.Some rare earth elements were added in two series.It has been found that grains are refined and the tensile strengths increase as in- creasing rare earth content.The results also show that the brittle fracture turns to plastic one for the joints with reducing amount of(Ni+Sn),and the tensile strength is increased.展开更多
文摘CuPNiSn amorphous alloys are good brazing materials at medium temperature for replacement of silver bearing brazing materials.The crystallization temperature,wettability,tensile strength of Cu-Cu joints and the microstructure of joints for three compositional series are reported.Some rare earth elements were added in two series.It has been found that grains are refined and the tensile strengths increase as in- creasing rare earth content.The results also show that the brittle fracture turns to plastic one for the joints with reducing amount of(Ni+Sn),and the tensile strength is increased.
