Effect of microstructure on tribocorrosion of FH36 low-temperature steels
Author:
Shi Liang12, Huo Da1, Lei Yanhua1, Qu Shaopeng1, Chang Xueting1, Yin Yansheng3
Affiliation:
1. College of Ocean Science and Engineering, Shanghai Maritime University , Shanghai 201306 , China 2. Institute of Science and Technology Information, Shanghai Maritime University , Shanghai 201306 , China 3. Research Center for Corrosion and Erosion Process Control of Equipment and Material in Marine Harsh Environment, Guangzhou Maritime University , Guangzhou 510725 , China
Abstract
Abstract
The tribocorrosion performance of low-temperature steels is vital for use in hostile environments. This study aims to investigate the tribocorrosion behavior of FH36 low-temperature steel with two distinct microstructures of tempered martensite (TM) and tempered sorbite (TS), respectively. Also, the coefficient of friction, surface morphologies, electrochemical properties, and corrosion features of the two steels were investigated. The results showed that the TM and TS steel exhibited outstanding impact toughness values of 239 and 306 J at −60°C, respectively. The friction coefficient and the electrochemical impedance in the TM steel were lower than those of the TS steel, while the scratch was deeper and narrower in the TM steel. Both the microstructure and the electrochemical corrosion affect the wear resistance of the low-temperature steels during the tribocorrosion process. The friction can accelerate the adsorption of Cl− ions that enrich the pits near the scratches, and the pitting of the TM steel was severe.
Publisher
Walter de Gruyter GmbH
Subject
Physical and Theoretical Chemistry,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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