Effect of a magnetic field applied during fusion welding on the fatigue damage of 2205 duplex stainless steel joints. (April 2019)

• Record Type: Journal Article
• Authors: Rosado-Carrasco, J.; Krupp, U.; López-Morelos, V.H.; Giertler, A.; García-Rentería, M.A.; González-Sánchez, J.
• Is Part Of: International journal of fatigue. Volume 121(2019)
• Page Start: 243
• Page End: 251
• Publication Date: 2019-04
• Subjects: Low intensity electromagnetic field -- Duplex stainless steel -- Gas metal arc welding -- Fatigue damage -- Microstructure evolution; Materials -- Fatigue -- Periodicals; Materials -- Fatigue; Periodicals; 620.1122
• DOI: 10.1016/j.ijfatigue.2018.12.022
• Languages: English
• ISSNs: 0142-1123

Abstract

Highlights: Magnetic field applied during welding of 2205 duplex steel improved fatigue resistance. Magnetic field induced ferrite grain refinement, high regenerated austenite in the HAZ. Improved microstructure increased number of microstructure barriers for crack growth. Crack initiation needed more load cycles on samples welded under 3 mT magnetic field. More plastic deformation was induced on austenite before fatigue crack initiation. Abstract: The effect of the application of a 3 mT electromagnetic field (EMF) during the welding of a 2205 duplex stainless steel on the resistance to fatigue damage was investigated on samples subjected to high cycle fatigue (HCF) and very high cycle fatigue (VHCF) conditions. Ferrite grain refinement, high volume fraction of regenerated austenite in the heat affected zone and smaller columnar grains in the weld metal were induced by (EMF) application during gas metal arc welding. The improved microstructure evolution during the thermal cycle increased the number of microstructural barriers, hindering the nucleation and growth of microstructurally short fatigue cracks.