前言 由于铌合金的密度较低,有很好的高温机械性能和良好的加工性能,同时在惰性气氛保护下还具有良好的焊接性能,所以铌合金广泛用于火箭、宇宙航行器、喷气式飞机、电子技术和原子能工业等。而C-103铌合金由于允许有较高的间隙杂质含量,极 Introduction Niobium alloys are widely used in rockets, spacecraft, jet aircraft due to their low density, good high-temperature mechanical properties and good processability with good weldability under inert atmosphere protection , Electronic technology and atomic energy industry. The C-103 niobium alloy due to allow a higher gap impurity content, very