PENGARUH FREKUENSI PULSE PENGELASAN GTAW PADA ALUMINIUM ALLOY 6061
Keywords:
pulse frequency, AA6061, GTAW, porosity, macrostructure, microhardness
Abstract
This paper describes the effect of pulse frequency on the properties of microhardness, porosity and macrostructure in GTAW welding. This study used alluminum 6061 as a base metal and without filler metal. Pulse frequency is varied from 0 Hz to 10 Hz. The macrostructure results showed the maximum penetration depth occured at pulse frequency 6 Hz, while the maximum penetration width occured when did not pulse frequency. Micro hardness testing showed that the maximum hardness occured at pulse frequency 6 Hz while the lowest hardness occured at pulse frequency 10 Hz. AA 6061 welding without metal filler produced porosity which can have an impact on the hardness of the weld metal.
Downloads
Download data is not yet available.
References
[1] Liang Y, Shen J, Hu S, Wang H, Pang J, Effect of TIG current on microstructural and mechanical properties of 6061-T6 aluminium alloy joints by TIG–CMT hybrid welding, Journal of Materials Processing Technology (2010),https://doi.org/10.1016/j.jmatprotec.2017.12.006
[2] Kumar A & Sundarrajan S. Effect of welding parameters on mechanical properties and optimization of pulsed TIG welding of Al-Mg-Si alloy, Int J Adv Manuf Technol (2009) 42:118–125 DOI 10.1007/s00170-008-1572-8
[3] Rajesh Manti & Dwivedi D. K. & Agarwal A. Microstructure and hardness of Al-Mg-Si weldments produced by pulse GTA welding, Int J Adv Manuf Technol (2008) 36:263–269
DOI 10.1007/s00170-006-0849-z
[4] Olabode, M., Kah, P., Martikainen, J., 2013. Aluminium alloys welding processes: Challenges, joint types and process selection. Proc. Inst. Mech. Eng. B. J. Eng. Manuf. 227 (8), 1129-1137.
[5] Padmanaban G, Balasubramanian V. Optimization of pulsed current gas tungsten arc welding process parameters to attain maximum tensile strength in AZ31B magnesium alloy. Nonferrous Met. Soc. China 21(2011) 467−476
[6] Ozturk F., Sisman A., Toros S., Kilic S., Picu R.C. Influence of aging treatment on mechanical properties of 6061 aluminum alloy. Materials and Design 31 (2010) 972–975
[7] Senthil Kumar T., Balasubramanian V., Sanavullah M.Y. Influences of pulsed current tungsten inert gas welding parameters on the tensile properties of AA 6061 aluminium alloy. Materials and Design 28 (2007) 2080–2092
[8] Wu C S, Zheng W and Wu L. Modelling the transient behaviour of pulsed current tungsten–inert-gas weldpools. Modelling Simul. Mater. Sci. Eng. 7 (1999) 15–23.
[9] Kirk Webb, Mark Kadlec, Brad Hemmert, Current control contributes to weld productivity, quality. The Tube & Pipe Journal April/May 2010
[2] Kumar A & Sundarrajan S. Effect of welding parameters on mechanical properties and optimization of pulsed TIG welding of Al-Mg-Si alloy, Int J Adv Manuf Technol (2009) 42:118–125 DOI 10.1007/s00170-008-1572-8
[3] Rajesh Manti & Dwivedi D. K. & Agarwal A. Microstructure and hardness of Al-Mg-Si weldments produced by pulse GTA welding, Int J Adv Manuf Technol (2008) 36:263–269
DOI 10.1007/s00170-006-0849-z
[4] Olabode, M., Kah, P., Martikainen, J., 2013. Aluminium alloys welding processes: Challenges, joint types and process selection. Proc. Inst. Mech. Eng. B. J. Eng. Manuf. 227 (8), 1129-1137.
[5] Padmanaban G, Balasubramanian V. Optimization of pulsed current gas tungsten arc welding process parameters to attain maximum tensile strength in AZ31B magnesium alloy. Nonferrous Met. Soc. China 21(2011) 467−476
[6] Ozturk F., Sisman A., Toros S., Kilic S., Picu R.C. Influence of aging treatment on mechanical properties of 6061 aluminum alloy. Materials and Design 31 (2010) 972–975
[7] Senthil Kumar T., Balasubramanian V., Sanavullah M.Y. Influences of pulsed current tungsten inert gas welding parameters on the tensile properties of AA 6061 aluminium alloy. Materials and Design 28 (2007) 2080–2092
[8] Wu C S, Zheng W and Wu L. Modelling the transient behaviour of pulsed current tungsten–inert-gas weldpools. Modelling Simul. Mater. Sci. Eng. 7 (1999) 15–23.
[9] Kirk Webb, Mark Kadlec, Brad Hemmert, Current control contributes to weld productivity, quality. The Tube & Pipe Journal April/May 2010
Published
2019-03-26
Section
Articles
