Effect of hydrogen isotopes on tensile and fracture properties of Zr–2.5Nb pressure tube material

Kinetics of hydrogen absorption/desorption in the Zr–2.5Nb alloy

“…The Zr-2.5 wt%Nb alloy is a typical pressure tube material in heavy water nuclear reactors [1][2][3] due to its excellent thermal conductivity and thermal stability, low thermal neutron absorption cross-section, and good creep behavior. [4][5][6][7] However, the performance deterioration of the Zr-2.5 wt% Nb alloy pressure tube under the effect of hydrogen isotopes 3,[8][9][10][11] (hydrogen embrittlement, hydrogen induced delayed cracking, etc.) is a critical concern in the nuclear industrial system.…”