Abstract
The effect of electromagnetic interaction of low intensity (EMILI) applied during fusion welding of AISI 2205 duplex stainless steel on the resistance to fatigue crack initiation and growth was investigated. The EMILI assisted welding process produced joints with enhanced resistance to fatigue crack initiation due to a modification on the microstructural evolution in the HAZ and the fusion zone during the thermal cycle involved during welding. The fatigue damage in terms of crack initiation from slip bands was strongly determined by the microstructural arrangement at the HAZ of the two phase alloy. It is proposed that the refined ferrite grain size and higher regenerated austenite proportion at the HAZ of welds made under EMILI improved the resistance to fatigue short crack initiation due to a higher elastic/plastic anisotropy at Austenite-Ferrite phase boundaries compared to conventional GMAW welds.
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Rosado-Carrasco, J., González-Sánchez, J., López-Morelos, V.H., Domínguez, G.R. (2018). Fatigue Crack Initiation and Growth on Welded Joints of 2205 Duplex Alloy: The Effect of Electromagnetic Interaction During Welding. In: Ambriz, R., Jaramillo, D., Plascencia, G., Nait Abdelaziz, M. (eds) Proceedings of the 17th International Conference on New Trends in Fatigue and Fracture. NT2F 2017. Springer, Cham. https://doi.org/10.1007/978-3-319-70365-7_33
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DOI: https://doi.org/10.1007/978-3-319-70365-7_33
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