Effect of Nitrogen Concentration on Temperature Dependent Mechanical Properties of Vanadium

摘要

The critical resolved shear stress and strain rate sensitivity of vanadium were determined for vanadium--nitrogen alloys over the temperature range of 77K to 400K for concentrations of 1 to 500 wt ppM nitrogen. The concentration dependence of the hardening rate agrees quite well with either the Fleischer or Labusch strengthening model but the combined temperature and concentration dependence follows more closely the form predicted by Ono and Sommer. The strain rate sensitivity exhibits a peak at 140K which decreases with increasing nitrogen content but above 250K there is a reversal in this effect. (ERA citation 04:053439)