Design and construction of a new test machine for stress corrosion cracking

Buscarlet, C.; Hocquellet, D.; Barillec, C.; Bonningue, M.; Boos, J. Y.

doi:10.1016/0010-938x(80)90137-7

Cited by 3 publications

(1 citation statement)

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“…On the other hand the influence of nickel on the SCC resistance in caustic environments has not been well defined yet, although its effect has been studied by some authors for different ferritic and austenitic stainless steels, McZZree et al [2] studying austenitic stainless steels type AISI 316 (Ni = 10%) and Alloys 800 (Ni = 35%), and 600 (Ni = 75%) found that nickel is the most important factor to increase the SCC resistance in caustic deaerated solutions, while in aerated solutions high contents of both nickel and chromium are necessary. Buscarlet et al [3] examined the caustic SCC behaviour of Fe-Cr-Ni alloys (AISI 304, AISI 316L, Alloys 800 and 600) by means of the SSR technique and found that the last-mentioned is the alloy most resistant to SCC.…”

Section: Introductionmentioning

confidence: 99%

Effect of alloy element contents on caustic stress corrosion cracking of several stainless steels

Rondelli

Vicentini

Brunella

et al. 1993

Materials & Corrosion

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The stress corrosion cracking behavior in caustic solutions (200 g/l sodium hydroxide, 10 g/l sodium chloride) of three austenitic (18Cr-lONi-2.5M0,20Cr-25Ni-4.5Mo, 27Cr-31Ni-3.5Mo) and three duplex (23Cr-4Ni, 22Cr-5Ni-3M0, 25Cr-7Ni-4Mo-N) stainless steels was examined. U-bend and Slow Strain Rate (SSR) tests were performed at 200-250°C. The negative influence of nickel in the lower range content for the 18Cr-lONi-2.5Mo and 20Cr-25Ni-4.5Mo has been shown; when the nickel content is significantly increased (>30%), as in the case of the steel 27Cr-31Ni-3.5M0, an increase of SCC resistance has been detected.The negative effect of molybdenum, mainly on the behaviour of duplex stainless steels, has also been evidenced.The duplex stainless steels show better caustic SCC resistance than austenitic stainless steels type 18Cr-lONi-2.5Mo and 20Cr-25Ni-4.5Mo. The best behaviour has been found for the lessalloyed steel 23Cr-4Ni.Die SpannungsriBkorrosion von drei austenitischen (18CrlONi-2,5Mo, 20Cr25Ni4,5Mo, 27Cr31Ni3,5Mo) und drei Duplexstihlen (23Cr4Ni, 22CrSNi3M0, 25Cr7Ni4MoN) wurde unter Verwendung von U-Proben und mit der SSR-Methode in basischen Losungen (200 g/I Natriumhydroxid, 10 g/l Natriumchlorid) bei 200-250°C untersucht. Der negative EinfluB von Nickel im Bereich niedrigerer Nickelgehalte wurde fur die Stahle 18CrlONi-2,SMo und 20Cr25Ni4,5Mo nachgewiesen. Bei deutlich erhohtem Nickelgehalt (> 30%) wie im Falle des Stahls 27Cr31Ni3,5Mo konnte erhohte Bestandigkeit gegen SpannungsriBkorrosion festgestellt werden. Auch der negative EinfluB von Molybdan, vor allem auf dasverhalten der Duplexstahle, konnte gezeigt werden.Die Duplexstahle sind gegen SpannungsriBkorrosion in Basen besser bestandig als austenitische nichtrostende Stahle der Typen 18CrlONi2,5Mo und 20Cr25Ni4JMo. Am widerstandsfahigsten war der Stahl 23Cr4Ni mit seinem niedrigen Nickelgehalt.

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Section: Introductionmentioning

confidence: 99%