The development of advanced vanadium alloys for fusion applications

As an alternative choice for fusion application, V alloyed with 6-8 wt%W has been studied. The results showed that W could strengthen the alloy at room temperature, more effectively than Ti or Cr. With both additions of Ti and W, the recovery and recrystallization of the alloys behaved similarly to V-4Cr-4Ti, but the behavior was strongly influenced by the concentration of the interstitial impurities in solid solution. Similar behavior to V-4Cr-4Ti was also found for V-6W-1Ti on hydrogen embrittlement. V-6W-1Ti seemed to have better properties for hydrogen embrittlement due to its low hydrogen absorption rate. Significant differences in oxidation behavior in air were not observed for the alloys investigated