Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Review on Delayed Hydride Cracking and Stress Corrosion Cracking of Metals

합금속의 수소취성과 응력부식균열 고찰

  • 김영석 (한국원자력연구소, 지르코늄팀) ;
  • 정용무 (한국원자력연구소, 지르코늄팀) ;
  • 임경수 (한국원자력연구소, 지르코늄팀)
  • Published : 2004.12.30
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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

Acknowledgement

Supported by : 과학기술부

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