Influence of Deuterium content on tensile behavior of Zr-2.5Nb pressure tube material in the temperature range of ambient to 300°C

摘要

Tensile properties of autoclaved Zirconium-2.5 wt. % Niobium pressure tube material were evaluated by uniaxial tension tests at temperatures between 25 and 300 °C and under strain-rates of 1.075 x 104 Is. Six number of Zr-2.5Nb alloy pressure tube spools of length 130 mm were obtained from pressure tube number 19-2557-2. Five spools were polished with abrasive paper to remove the oxide layer. These spools were gaseously charged with controlled amount of deuterium. The target deuterium concentrations were 25, 50, 75, 100 and 200 wppm of hydrogen equivalent. Ten samples were machined by EDM wire cutting from every spool.