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Review on Delayed Hydride Cracking and Stress Corrosion Cracking of Metals  

Kim, Young Suk (Korea Atomic Energy Research Institute)
Cheong, Yong Moo (Korea Atomic Energy Research Institute)
Im, Kyung Soo (Korea Atomic Energy Research Institute)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.15, no.4, 2004 , pp. 266-273 More about this Journal
Abstract
The objective of this study is an understanding of stress corrosion cracking of metals that is recognized to mostly limit the lifetime of the structural materials by comparing the features of delayed hydride cracking of zirconium alloys with those of stress corrosion cracking (SCC) of Ni-based alloys and hydrogen cracking of stainless steels. To this end, we investigated a dependence of delayed hydride cracking (DHC) velocity on the applied stress intensity factor and yield strength, and correlated a temperature dependence of the striation spacing and the DHC velocity. We reviewed a similarity of the features between the DHC of zirconium alloys, the SCC of Ni-based alloys and turbine rotor steels, and the hydrogen cracking of stainless steels and discussed the SCC phenomenon in metals with our DHC mode.
Keywords
Delayed hydride cracking; Zr; Hydrogen embrittlement; Stress corrosion cracking; Stainless steels; Ni-based alloys;
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