EVIDENCE FOR DISCONTINUOUS CRACK-GROWTH IN DELAYED HYDRIDE CRACKING OF A ZIRCONIUM ALLOY

[[abstract]]Delayed hydride cracking (DHC) has been recognized as an important delayed failure mechanism for zirconium alloys used in a hydrogen environment. In this study on the DHC of hydrided Zircaloy-4, we observed interesting metallographic evidence for the discontinuous crack growth process, which may enable us to understand more details during crack growth by the Dutton-Puls model.[[fileno]]2060108010044[[department]]工程與系統科學