Abstract

The terminal solid solubility ( C T ) of hydrogen in zirconium/2 at % chromium/0.16 at % iron alloy has been determined in the temperature range 250 to 415 °C using a dilatometric technique. The solubilities given by the heating curves are the equilibrium boundaries of the stable hydride phase and these were not significantly different from unalloyed zirconium or from the Zircaloys and zirconium /2 1 2 wt % niobium alloy. The terminal solid solubility for the cold-worked Zr/2 at %Cr/0.16 at % Fe alloy was given by C T = 9.26 × 10 5 exp (−11 120/ RT) ppm and for the heat-treated alloy by C T = 6.22 × 10 5 exp (−10 570/ RT) ppm. The actual values of hydrogen solubility were both very similar.

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