Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Stress Corrosion Cracking of Alloys 600, 690, and 800 in a Tetrathionate Solution at $340^{\circ}C$

  • Lee, Eun-Hee (Department of Nuclear Materials Technology Development, Korea Atomic Research Institute) ;
  • Kim, Kyung-Mo (Department of Nuclear Materials Technology Development, Korea Atomic Research Institute)
  • Published : 2006.09.24
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Abstract

The stress corrosion cracking (SCC) susceptibility of Alloy 600 MA, Alloy 600 TT, Alloy 800, and Alloy 690 TT were investigated in a deaerated 0.01 M solution of sodium tetrathionate using reverse u-bend test samples at $340^{\circ}C$. The results showed that SCC occurred in all alloys, excluding Alloy 690 TT. The SCC susceptibility decreased with an increase in the chromium content of the alloys. The results of the deposits and spectra taken from an energy dispersive X-ray system confirmed the existence of a reduced sulfur causing SCC.

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