Abstract
The aim of this research is to study the effect of heat input on microstructure, impact and tensile strength properties of gas-metal-arc welded SKD 61 hot work tool steel by applying pulse current. Two steel plates with V groove at the connected edge, were welded under the condition of 150, 170 and 190 A of welding currents, 16–25 V of arc voltages and 1.5 mm/s of welding speed. A consumable copper-coated solid wire electrode was used in this welding process. The results showed that the martensite with retained austenite and dendrite structure of ferrite phases were found in the welded zones for all conditions. The hardness in the welded zone of three welding conditions were slightly increased with increasing heat input, and higher than that of the base metal, which resulted from martensite transformation. The absorbed energy of welded specimens during impact tests was increased with increasing heat input. The values of impact energies at the welding currents of 150, 170 and 190 A were 8.7, 10.0 and 14.0 J, respectively. Tensile strengths of all welded specimens were almost constant at 250 MPa. The tensile specimens were fractured at the heat affected zone.
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References
Boughton, L.: The use of pulsed current to control metal transfer in welding. Br. Weld. J. 4, 159–166 (1965)
Allum, C.J.: MIG welding-time for a reassessment. Met. Constr., 347–353 (1983)
Needham, J.C.: Pulse controlled consumable electrode welding arcs-general principles and operating characteristics. Br. Weld. J. 4, 191–197 (1965)
Rajasekaran, S.: Weld bead characteristics in pulsed GMA welding of Al-Mg alloys. Weld. J. 78(12), 397–407 (1999)
Amin, M.: Pulse current parameters for arc stability and controlled metal transfer in arc welding. Met. Constr., 272–377 (1983)
Stanzel, K.: Pulsed GMAW cuts cycle time by 600 percent. Weld. Des. Fabr., 85–87 (2001)
Jilong, M., Apps, R.: New MIG process results from metal transfer mode control. Weld. Met. Fabr., 168–175 (1983)
Raja, A.: Flux core stelliting by pulsed MAG welding. WRI J. 19(3), 98–101 (1998)
Elliott, S.: Using synergic MIG successfully. Met. Constr., 148–151 (1985)
Rajasekaran, S.: Surface topography of pulsed current gas metal arc clads. Surf. Eng. 16(6), 495–500 (2000)
Thompson, S.: Handbook of Mold Tool and Die Repair Welding, 1st edn, p. 224. Abington Publishing Limited (1999)
Vedani, M.: Microstructural evolution of tool steels after Nd-YAG laser repair welding. J. Mater. Sci. Milan 39, 241–249 (2004)
Aloraier, A.: FCAW process to avoid the use of post welding heat treatment. J. Press. Vessel Pip., 394–398 (2006)
Kanchanasangtong, T., Surapunt, S.: Effect of heat input on microstructure and hardness of SKD 61 hot work tool steel by using gas metal arc welding. Int. Trans. J. Adv. Mater. Res., 557–559 (2012)
Acknowledgements
The authors are grateful to the Faculty of engineering, Thammasat University for the funding support of this study.
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Surapunt, S., Kanchanasangtong, T. (2016). Mechanical Property Evaluation of Gas-Metal-Arc Welded SKD 61 Hot Work Tool Steel. In: Öchsner, A., Altenbach, H. (eds) Machining, Joining and Modifications of Advanced Materials . Advanced Structured Materials, vol 61. Springer, Singapore. https://doi.org/10.1007/978-981-10-1082-8_7
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DOI: https://doi.org/10.1007/978-981-10-1082-8_7
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