以Ni_(75)Cr_(15)Fe_(10)合金为试样,通过冷轧及低温退火,用正电子湮没辐射Doppler展宽谱测量了不同压下量条件下的空位浓度及位错密度;给出位错的比捕获速率μd=0.677cm~2/See,空位的比捕获速率为μv=2.11×10~(15)/See。从零压下量到25％压下量,位错密度与空位 The vacancy concentration and dislocation density of Ni_ (75) Cr_ (15) Fe_ (10) alloy were measured by Doppler broadening spectrum of positron annihilation by cold rolling and low temperature annealing. The specific capture rate of dislocation μd = 0.677cm ~ 2 / See, the specific capture rate of vacancy μv = 2.11 × 10-15 / See. From zero reduction to 25% reduction, dislocation density and vacancy