Analysis of sensitization phenomenon in friction stir welded 304 stainless steel

Autor:	María de Jesús Pérez, N. Rodríguez, Scott M. Packer, Russell J. Steel, Efraín Almanza, Carlos Rodrigo Muñiz
Rok vydání:	2010
Předmět:	Materials science Metallurgy Welding Weld zone Intergranular corrosion Microstructure law.invention medicine.anatomical_structure Optical microscope law medicine Friction stir welding General Materials Science Composite material Base metal Sensitization
Zdroj:	Frontiers of Materials Science in China. 4:415-419
ISSN:	1673-7482 1673-7377
DOI:	10.1007/s11706-010-0102-4
Popis:	This study evaluates the degree of sensitization (DOS) of 304 stainless steel joined by friction stir welding (FSW). Single-loop electrochemical potentiokinetic reactivation tests were performed using a 0.5 mol/L H2SO4 + 0.01 mol/L KSCN solution. Sensitization was promoted by exposition of the stainless steel at temperatures between 400°C and 850°C. The microstructure was characterized using optical microscopy to identify the weld zone and the base metal. The samples treated at 550°C showed the most severe intergranular corrosion. The DOS was lower in the weld zone than in the base metal after heat treatments. This reduction in the DOS for the weld zone indicates that FSW is a beneficial process in joining stainless steel.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5d280cea753427b5d31669eb193603b0 https://doi.org/10.1007/s11706-010-0102-4 Zobrazit plný text záznamu Full text from SpringerLink