Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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Evaluation of Fracture Toughness($J_{IC}$) on 304 Stainless Steel Weldments Artificially Degraded under SCC Environment

SCC 분위기 하에서 장시간 인공열화된 304 스테인리스강 용접부의 파괴인성($J_{IC}$)평가

  • Published : 1999.04.01
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Abstract

Fracture toughness({TEX}$J_{IC}${/TEX}) on 304 austenitic stainless steel weldments artificially degraded for long period under SCC environments were evaluated to investigate its reliability and environmental characteristics. Electro-chemical polarization tests were previously carried out to evaluate corrosion susceptiblility of weldment, and stress corrosion cracking was tested under various conditions of 3.5wt.% NaCl solution, the temperature of $25^{\circ}$C and $95^{\circ}$C, and oxygen concentration during 3000hours. From the results obtained, it was found that 304 stainless steel weldment was so susceptible under high temperature and high oxygen concentration of 3.5wt.% NaCl solution, and fracture toughness({TEX}$J_{IC}${/TEX}) was also considerably reduced by material degradation.

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References

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