Microstructural characterization of a dissimilar joint (Duplex 2202-Austenitic 201LN) performed by the GMAW process
Abstract
Welding efficiency in joints are influenced by internal defects that could be present in the welding bead or by the phases present due to the chemical composition of the bases materials. In this sense, the present work study the phases present in the weld bead by means of optical microscopy, scanning electron microscopy and Energy Dispersive X-rays spectroscopy. The results showed the phases that were precipitated during the welding process (χ and σ), these being, together with the segregation of elements, the cause of the presence of hot cracking.
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References
Beddoes, J., & Parr, J. G. (1999). Introduction to Stainless Steels (3rd Ed.): ASM International.
Escriba, D. M., Materna-Morris, E., Plaut, R. L., & Padilha, A. F. (2009). Chi-phase precipitation in a duplex stainless steel. Materials Characterization, 60, 1214-1219.
García, M. (2015). Efectos de la interacción electromagnética durante la soldadura del acero inoxidable dúplex 2205. (Tesis Doctoral), Instituto de Investigación en Metalurgia y Materiales-UMSNH.
Kitsunai, Y., Tanaka, M., & Yoshihisa, E. (1998). Influence of residual stresses and loading frequencies on corrosion fatigue crack growth behavior of weldments. Metallurgical and Materials Transactions A, 29, 1289–1298.
Lo, K. H., Shek, C. H., & Lai, J. K. L. (2014). Recent developments in stainless steels Materials Science and Engineering, 64, 39–104.
Lula, R. A. (1986). Stainless Steels: Ed. American Society for Metals.
Michalska, J., & Sozańska, M. (2006). Qualitative and quantitative analysis of σ and χ phases in 2205 duplex stainless steel. Materials Characterization, 56, 355–362.
Pohl, M., Storz, O., & Glogowski, T. (2007). Effect of intermetallic precipitation on the properties of duplex stainless steel. Materials Characterization, 58, 65-71.
Varol, I., Lippold, J. C., & Baeslack-lll, W. A. (1992). Welding of duplex stainless steels. Key Engineering Materials, 69-70, 217–252.
Voronenko, B. I. (1997). Austenitic-ferritic stainless steels: Astate of art review. Metal Science and Heat Treatment, 39, 428-437.
Zhou, S., Ma, G., Wu, D., Chai, D., & Lei, M. (2018). Ultrasonic vibration assisted laser welding of nickel-based alloy and Austenite stainless steel. Journal of Manufacturing Processes, 31, 759-767.
