... operation metallography niobium alloys pressure vessels scanning electron microscopy zirconium alloys Delayed hydride cracking (DHC) is an important crack initiation and growth mechanism in Zr-2.5Nb alloy pressure tubes of CANDU (Canada Deuterium Uranium) nuclear reactors. The process of DHC...

... ). Therefore, we conclude that nucleation of the hydrides in zirconium alloys for a given hydrogen concentration is driven by the combined effects of the degree of undercooling or Δ T and dislocations created by both applied tensile stresses and hydrides precipitated during thermal cycles. This leads...

... cracks crack detection niobium alloys zirconium alloys pressure vessels fission reactor materials pipe flow fission reactor operation deuterium uranium The core of a CANDU (CANada Deuterium Uranium) pressurized heavy water reactor consists of approximately 400 horizontal Zr-2.5Nb alloy...