Abstract
Tensile tests of 03Cr2ONi45Mo4NbBZr alloy specimens doped with He (3 × 10−3 at. %), He (3 × 10−3 at. %) + H (9 × 10−3at. %) and H (9 × 10−3at. %) in 650-900°C temperature range have been performed. The results showed that helium embrittles the material at temperatures above 650°C as a rule. The presence of hydrogen in helium doped specimens does not result in any additional changes of alloy ductility. However, in comparison with the initial state hydrogen doping causes some decrease of material ductility at 750–850°C temperatures. Helium doping causes intergranular fracture and fracture of hydrogen doped specimens as well as the undoped ones is transgranular mainly.