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本文主要阐述了在77～500°K温度范围内,铌的屈服极限、应力塑性松弛和温度,变形速度的关系。还测定了塑性变形机构的一些动力特性。实验试样是将两次电子束区熔的单晶铌在室温下旋锻,拉伸成线材,尺寸为直径0.5毫米,长50毫米,经1200℃1小时,10~(-6)毫米汞柱下直室退火。退火后的晶粒线尺寸为0.06毫米。光谱分析置换杂质含量为重量%:F_e0.001,M_?0.0001,Pb<0.0001,C_r0.002,S_?0.0001,S_i0.001,
In this paper, the relationship between yield point, stress relaxation, temperature and deformation rate of niobium in the temperature range of 77 ~ 500 ° K is mainly discussed. Some of the dynamic characteristics of the plastic deformation mechanism were also determined. The experimental sample is a single crystal niobium melted at two electron beam regions by swaging at room temperature and drawing into a wire having a diameter of 0.5 mm and a length of 50 mm and measuring at 1200 ° C for 1 hour and measuring 10 -6 mm Hg Column under the straight room annealing. The grain size after annealing is 0.06 mm. Spectral analysis of the replacement impurity content by weight%: F_e0.001, M_? 0.0001, Pb <0.0001, C_r0.002, S_? 0.0001, S_i0.001,