Hydrogen embrittlement of X2CrNiMoCuN25-6-3 super duplex stainless steel welded joints under cathodic protection - Publication - MOST Wiedzy

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Hydrogen embrittlement of X2CrNiMoCuN25-6-3 super duplex stainless steel welded joints under cathodic protection

Abstract

The effect of cathodic polarization conditions on hydrogen degradation of X2CrNiMoCuN25-6-3 super duplex stainless steel welded joints, obtained using flux cored arc and submerged arc welding methods, was evaluated. Slow strain rate tensile tests of base material and welded specimens, ferrite content measurements, scanning electron microscopy observations, and statistical analysis were performed. It was found that hydrogenation of super duplex steel welded joints under the conditions of cathodic protection in artificial seawater environment leads to hydrogen embrittlement and that the weld area shows the highest degree of degradation. Welded joints made with higher heat input and under higher current density tend to cause an increase in the degradation of mechanical properties. A series of models to analyze the relationship between conditions and properties of material under extreme environmental conditions were successfully elaborated and evaluated.

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Details

Category:
Articles
Type:
artykuły w czasopismach dostępnych w wersji elektronicznej [także online]
Published in:
CONSTRUCTION AND BUILDING MATERIALS no. 238,
ISSN: 0950-0618
Language:
English
Publication year:
2020
Bibliographic description:
Świerczyńska A., Fydrych D., Landowski M., Rogalski G., Łabanowski J., Hydrogen embrittlement of X2CrNiMoCuN25-6-3 super duplex stainless steel welded joints under cathodic protection, CONSTRUCTION AND BUILDING MATERIALS, 2020,10.1016/j.conbuildmat.2019.117697
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.conbuildmat.2019.117697
Verified by:
Gdańsk University of Technology

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