Abstract
Manufacturing in almost all industries involves joining together many components. Welding is the most popular joining process, which is cost effective, reliable, and versatile. In the automobile industry, when welding is applied, distortion can occur and produce additional costs of rework. Distortion became a potential problem in this process, since the joint undergoes significant thermal expansion and contraction, longitudinal and transverse shrinkages and leads to a non-desired welded structure. Recently, the usage of more lighted alloys in automobile sector ensures the conductor’s safety and reduction of emission; stainless steels have been placed in this industry as a compelling alternative for some carbon steels.
The employment of hybrid structures and components is willing field in vehicles. In this study dissimilar joints of austenitic and ferritic stainless steels welded by robotic gas metal arc welding process were microstructurally examined by optical and scanning electron microscope. Austenite twins are presented in the heat affected zone (HAZ) on the austenite plate, on the other hand allotriomorphic ferrite was highlighted in the transition zone. Microhardness test was performed along the cross-section of the weld. Thermocouples were employed during welding in order to determine the temperature distribution and analyze the thermal cycles from the weld to the base metal. Distortion evaluations were carried out by employing GeoMagic® Design™ X and Konica Minolta Range 7 for weld scanning and the deviation of the plates was calculated.
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Acknowledgments
The authors would like to thank J. C. Montoya Betancourt and L. A. Lara Arredondo for their technical support, which was most helpful in conducting some of the experiments.
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Miranda Pérez, A.F., Pérez Medina, G.Y., Hurtado Delgado, E., Reyes Valdés, F.A. (2015). Distortion Evaluation in Dissimilar Stainless Steel Joints Welded by GMAW Process. In: Pérez Campos, R., Contreras Cuevas, A., Esparza Muñoz, R. (eds) Materials Characterization. Springer, Cham. https://doi.org/10.1007/978-3-319-15204-2_2
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DOI: https://doi.org/10.1007/978-3-319-15204-2_2
Publisher Name: Springer, Cham
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