Title: Environmentally assisted cracking of 316L austenitic stainless steel in a hydrogenated steam environment
Authors: Janoušek, Jaromír
Citation: HOŘEJŠÍ, Petr, ed.; VANĚK, Václav, ed. Soutěžní přehlídka studentských a doktorských prací FST 2019: sborník příspěvků: 25. dubna 2019. 1. vyd. Plzeň: Západočeská univerzita v Plzni, 2019. VI, 206 s. ISBN 978-80-261-0860-3.
Issue Date: 2019
Publisher: Západočeská univerzita v Plzni
Document type: konferenční příspěvek
URI: http://hdl.handle.net/11025/34383
ISBN: 978-80-261-0860-3
Keywords: ekologicky podporované krakování;korozní praskání;hydrogenovaná pára;oxidace
Keywords in different language: environmentally assisted cracking;stress corrosion cracking;hydrogenated steam;oxidation
Abstract in different language: A low pressure superheated hydrogen steam system has been used to accelerate the oxidation kinetics while keeping the electrochemical conditions similar to those of the primary water in a pressurized water reactor. A special corrosion apparatus was built in cooperation with University of Manchester and Škoda JS for the purpose. The initiation is investigated using a Constant Extension Rate Test (CERT) with flat tapered specimens made from Type 316L austenitic stainless steel in a reducing vapour environment at 350 °C. Two different surface finishes were used: as-ground and as-polished. Constant extension rate tests with a test rate of 2×10-6 ms-1 were performed on 4 specimens - at room temperature and at an elevated temperature of 350 °C and as a more oxidizing environment was chosen R = 1/6, on the contrary as a more reducing environment was chosen R = 6, where parameter R represents the ratio between the oxygen partial pressure at the Ni/NiO transition and the oxygen partial pressure. Post-test evaluation using SEM was applied.
Appears in Collections:Soutěžní přehlídka studentských a doktorských prací FST 2019
Soutěžní přehlídka studentských a doktorských prací FST 2019

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