Comparative analysis of the corrosion resistance of UNS S31200 duplex stainless steel and its analogue

Autor:	Andrey Lapechenkov, Aleksey Piskarev, Lyudmila Galata, Aleksandr Fedorov
Rok vydání:	2020
Předmět:	010302 applied physics Materials science Metallurgy chemistry.chemical_element 02 engineering and technology Cooling rates 021001 nanoscience & nanotechnology 01 natural sciences Corrosion Chromium chemistry Duplex (building) 0103 physical sciences Russian federation 0210 nano-technology
Zdroj:	Materials Today: Proceedings. 30:361-364
ISSN:	2214-7853
Popis:	Austenitic-ferritic stainless steels, more commonly known as duplex stainless steels, have become increasingly popular among foreign producers, but in Russian Federation development of these steels has begun relatively recently. The purpose of this study was to perform a comparative analysis of the corrosion resistance of UNS S31200 austenitic-ferritic stainless steels and its Russian analogue. The corrosion resistance equivalents PREN and MARC were determined and compared for these two steels. Corrosion resistance of analogue-steel is lower than S31200′s due to the reduced content of chromium and nitrogen. Using metallographic techniques in combination with thermodynamic modeling a large amount of undesired σ-phase was found in analogue-steel. This is due to insufficient high cooling rates or incorrect selection of heat treatment modes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::30325c4b9a7f8e0b595e4e06b955cf7f https://doi.org/10.1016/j.matpr.2019.12.174 Zobrazit plný text záznamu Full Text from ScienceDirect