Mechanical and microstructural analysis in the welding of ductile cast iron by TIG procedure, with different filler materials and air cooling

Authors

DOI:

https://doi.org/10.3989/revmetalm.194

Keywords:

Base metal, Interface-weld bead, Ductile cast iron, Repair, TIG weldability

Abstract


The present work analyses the strength and microstuctural variations of ductile cast iron welded by means of the TIG technique, without heat treatment and using different filler materials (pearlitic malleable cast iron, Fe-Ni alloy and bronze and manganese alloy). The specimens for the mechanical and microstructural tests are obtained from each welded coupon with dimensions 100x 100x6 mm. Based on the qualitative analysis of the micrographs and the quantitative analysis of the results of the mechanical tests, which have been carried out in well-differentiated areas of the welded joints (base metal, interface and weld bead), it is concluded that this type of welding and the introduction of new variables such as the heat treatments before and/or after welding are suitable. The mechanical and strength characteristics have been correlated with the microstructures obtained in the plates (specimens) in order to evaluate their advantages and disadvantages, as well as to draw conclusions.

Downloads

Download data is not yet available.

References

Abboud, J.H. (2012). Microstructure and erosion characteristic of nodular cast iron surface modified by tungsten inert gas. Mater. Design 35, 677-684. https://doi.org/10.1016/j.matdes.2011.09.029

Askari-Paykani, M., Shayan, M., Shamanian, M. (2014). Weldability of ferritic ductile cast iron using full factorial design of experiment. J. Iron Steel Res. Int. 21 (2), 252-263. https://doi.org/10.1016/S1006-706X(14)60039-X

Bhatnagar, R.K., Gupta, G. (2016). A Review on Weldability of Cast Iron. IJSER 7 (5), 126-131.

Bhatti, A.A., Barsoum, Z., Murakawa, H., Barsoum, I. (2015). Influence of thermo-mechanical material properties of different steel grades on welding residual stresses and angular distortion. Mater. Design 65, 878-889. https://doi.org/10.1016/j.matdes.2014.10.019

Cárcel-Carrasco, F.J., Pérez-Puig, M.A., Pascual-Guillamón, M., Pascual-Martínez, R. (2016). An analysis of the weldability of ductile cast iron using inconel 625 for the root weld and electrodes coated in 97.6% nickel for the filler welds. Metals 6 (11), 283. https://doi.org/10.3390/met6110283

Cárcel-Carrasco, J., Pascual, M., Pérez-Puig, M., Segovia, F. (2017). Comparative study of TIG and SMAW root welding passes on ductile iron cast weldability. Metalurgija 56 (1-2), 91-93.

Chamim, M., Triyono, Diharjo, K. (2017). Effect of electrode and weld current on the physical and mechanical properties of cast iron welding. AIP Conf. Proc. 1788 (1), 030031. https://doi.org/10.1063/1.4968284

De La Torre, U., Loizaga, A., Lacaze, J., Sertucha, J. (2014). As cast high silicon ductile irons with optimised mechanical properties and remarkable fatigue properties. Mater. Sci. Tech. 30 (12), 1425-1431. https://doi.org/10.1179/1743284713Y.0000000483

Ebrahimnia, M., Ghaini, F.M., Gholizade, S., Salari, M. (2012). Effect of cooling rate and powder characteristics on the soundness of heat affected zone in powder welding of ductile cast iron. Mater. Design 33, 551-556. https://doi.org/10.1016/j.matdes.2011.04.063

El-Banna, E.M. (1999). Effect of preheat on welding of ductile cast iron. Mater. Lett. 41 (1), 20-26. https://doi.org/10.1016/S0167-577X(99)00098-1

Gouveia, R.M., Silva, F.J.G., Paiva, O.C., de Fátima Andrade, M., Pereira, L.A., Moselli, P.C., Papis, K.J.M. (2018). Comparing the structure and mechanical properties of welds on ductile cast iron (700 MPa) under different heat treatment conditions. Metals 8 (1), 72. https://doi.org/10.3390/met8010072

Kumar, R., Kumar, M., Trivedi, V., Bhatnagar, R. (2017). Evaluation of Mechanical and Microstructural Properties of Cast Iron with Effect of Pre Heat and Post Weld Heat Treatment. Int. J. Mech. Eng. 4 (5), 1-6. https://doi.org/10.14445/23488360/IJME-V4I5P101

Marques, E.S.V., Silva, F.J.G., Paiva, O.C., Pereira, A.B. (2019). Improving the mechanical strength of ductile cast iron welded joints using different heat treatments. Materials 12 (14), 2263. https://doi.org/10.3390/ma12142263

Merchant Samir, Y. (2015). A Review of Effect of Welding and Post Weld Heat Treatment on Microstructure and Mechanical Properties of Grade 91 Steel. IJRET 4 (3), 574-580. https://doi.org/10.15623/ijret.2015.0403096

Pascual, M., Ferrer, C., Rayón, E. (2009). Weldability of spheroidal graphite ductile cast iron using Ni / Ni-Fe electrodes. Rev. Metal. 45 (5), 334-338. https://doi.org/10.3989/revmetalm.0814

Sellamuthu, P., Samuel, D.G.H., Dinakaran, D., Premkumar, V.P., Li, Z., Seetharaman, S. (2018). Austempered ductile iron (ADI): Influence of austempering temperature on microstructure, mechanical and wear properties and energy consumption. Metals 8 (1), 53. https://doi.org/10.3390/met8010053

Suárez-Sanabria, A., Fernández-Carrasquilla, J. (2006). Microestructura y propiedades mecánicas de una fundición esferoidal ferrítica en bruto de colada para su uso en piezas de grandes dimensiones. Rev. Metal. 42 (1), 18-31. https://doi.org/10.3989/revmetalm.2006.v42.i1.3

UNE-EN 876 (1996). Ensayos destructivos de uniones soldadas en materiales metálicos. Ensayos de tracción longitudinal sobre el metal de aportación en uniones soldadas por fusión. Normalización Española.

UNE-EN 10002-1 (2002). Materiales metálicos: Ensayos de tracción. Parte 1, Método de ensayo a temperatura ambiente. Asociación Española de Normalización y Certificación.

UNE-EN 1563 (2019). Fundición. Fundición de grafito esferoidal. Normalización Española y Certificación.

Wube Dametew, A. (2015). Experimental investigation on weld ability of cast iron. Science Discovery 3 (6), 71-75. https://doi.org/10.11648/j.sd.20150306.15

Published

2021-06-30

How to Cite

Martínez Alcón, J. ., Pascual Guillamón, M. ., Solano García, L. ., & Salas Vicente, F. . (2021). Mechanical and microstructural analysis in the welding of ductile cast iron by TIG procedure, with different filler materials and air cooling. Revista De Metalurgia, 57(2), e194. https://doi.org/10.3989/revmetalm.194

Issue

Section

Articles

Most read articles by the same author(s)