Susceptibility of highiy alloyed austenitic stainless steels to caustic stress corrosion cracking (Articolo in rivista)

Type
Label
  • Susceptibility of highiy alloyed austenitic stainless steels to caustic stress corrosion cracking (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Alternative label
  • Rondelli G., Vicentini B. (2002)
    Susceptibility of highiy alloyed austenitic stainless steels to caustic stress corrosion cracking
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Rondelli G., Vicentini B. (literal)
Pagina inizio
  • 813 (literal)
Pagina fine
  • 819 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 53 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Titolo
  • Susceptibility of highiy alloyed austenitic stainless steels to caustic stress corrosion cracking (literal)
Abstract
  • Slow Strain Rate tests (5 X 10-6 to 4 x 10-8s-1) in 300 g/L sodium hydroxide at 200 °C were conducted on highly alloyed austenitic stainless steels with various nickel and chromium concentrations: N08904 (20Cr-25Ni- 4Mo), N8825 (22.5Cr-40Ni-3Mo), N08028 (27Cr-30Ni-3.5Mo), R20033 (32.5Cr- 31Ni-1.5Mo). Stress Corrosion Cracking (SCC) resistance of studied alloys increases in the following order: N08904, N8825, N08028, R20033 in accordance with increasing chromium content. The SCC susceptibility indexes decrease gradually with decreasing of strain rate. In materials exhibiting higher SCC resistance, tests should be con-ducted at very low strain rates (strain rate < 2 x 10-7 s- 1) to observe indications of SCC. When sulphide ions are added the R20033 steel exhibiting an excellent corrosion behaviour in pure caustic solution, becomes highly susceptible to SCC, even at strain rate = 5 x 10-6 s-1. (literal)
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