Modeling the Welding Process of the Low Alloy Ferritic Steels T/P23 and T/P24

Abstract:

In this paper a model based on transport equations is proposed to study the weldability of low alloy ferritic steels T/P23 and T/P24. The model was numerically implemented by using the finite volume method (FVM) in an open source computational code to simulate the influence of the heat input, base metal thickness and preheating temperature on the thermal evolution and the cooling rate during the welding process. Meanwhile, it was possible to evaluate qualitatively the microstructure at the heat affected zone (HAZ) of these steels when a single weld bead was deposited on their surface and calculate the maximum hardness reached at this region. A double-ellipsoid heat source model for power density distribution was used in order to obtain a good estimate of the cooling rate and evolution of the fusion zone (FZ). The results are discussed and good agreement between experimental and simulated results was obtained for temperature distribution

• Periodical: Advanced Materials Research (Volumes 476-478)
• Pages: 642-649
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.476-478.642
• Online since: February 2012
• Authors: José Adilson de Castro, Carlos Roberto Xavier, Luciano Pessanha Moreira, Yasushi Sazaki
• Keywords: Hardness, Modeling, T/P23 and T/P24 Steels, Weldability

References

[1] A., Dhooge, J., Vekeman. Welding Research Abroad-WRC, v. LII, (2006), p.31.

[2] J. G., Nawrocki, J. N., Dupont, , C. V., Robino, , J. D., Puskar, Marder, A. R. Welding Journal, v.82, (2003), p.25.

[3] J. C.,Vaillant, B., Vandenberghe, B., Hahn, H., Heuser, C., Jochum. International Journal of Pressure Vessels and Piping, v. 85,(2008), p.38.

DOI: 10.1016/j.ijpvp.2007.06.011

[4] W., Bendick, B., Gabriel, B., Hahn, B., Vandenberghe. International Journal of Pressure Vessels and Piping, v. 84, (2007), p.13.

[5] J. G., Nawrocki, J. N., Dupont, C. V., Robino, A. R. Marder, Welding Journal, v. 79, (2000), p.355.

[6] P., Nevasmaa, J., Salonen, S., Holmström, S. Caminada. VTT Technical Research Centre of Finland: Research Report,(2006), p.1.

[7] P., Nevasmaa, J., Salonen, S., Holmström, S., Caminada. VTT Technical Research Centre of Finland: Research Report, (2007), p.1.

[8] M., Igarashi, M., Yoshizawa, H., Matsuo, O., Miyahara, A. Iseda. Materials Science and Engineering A, (2009), doi: 10.1016/j.msea. 2008.05.054. (article in press)

[9] J., Goldak A., Chakravarti, M., Bibby. Metallurgical Transactions B, v. 15B, (1984), p.299.

[10] C., R., Xavier, H., Delgado Jr. Materials Research, v. 14, (2011), p.73.

[11] Yurioka, N., Okumura, M., Kasuya, T. Cotton, H.J.U. Metal Construction, v. 19, (1987), p.217.