Abstract
A comprehensive metallographic investigation has been made to study the morphology of the hydrides precipitated during Hydrogen Induced Delayed Cracking (HIDC) in Zr-2.5 Nb compact tension specimens after removing successive layers from various cross-sections of the specimen. The major findings are: (1) Hydrides are precipitated in the crack tip region in narrow bands of adjacent platelets parallel to the crack growth plane. (2) The crack front region is not uniformly hydrided but is discontinuous. This peculiar morphology of hydrides is responsible for the fracture surface which is characteristic of HIDC in this material. (3) The growth of the hydrides is not limited to the region within the plastic zone.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
