Continued Investigation of the Solid-Solid Phase Transitions in Zirconium

Work has continued to refine and investigate differences in the Hugoniots for Zirconium with differing impurity levels. Past work has shown that interstitial oxygen inhibits the $\alpha\rightarrow\omega$ phase transition but appears to have little effect on the $\omega\rightarrow\beta$ phase transition. Further plate impact experiments have been carried out to determine differences in the Hugoniots for two of the three types of Zirconium samples studied in previous work.