Aluminium AA1153, Er5356, GTAW , welding current


Aluminium alloys have a wide range of applications in the defence and aerospace industry, including for the manufacture of fuel tanks. The welding Current and type of filler metal significantly affect the microstructure formed and the mechanical strength of metal joints. This study aimed to determine the effect of the kind of filler metal (ER5356 filler metal) and welding current (140 amperes, 160 amperes, and 180 amperes) on the mechanical properties and microstructural of aluminium alloys AA1135 by the GTAW welding process. The results showed that the dendrite size increased with increasing welding current. Furthermore, the micro-hardness of the weld metal shows a decreasing trend with increasing welding current. The maximum tensile strength was obtained at a current power of 160 amperes, and all specimens failed at HAZ. The fracture surface of tensile test observations using SEM showed brittle fracture for Er5356 filler metal specimens, while on the fracture surface of the base metal tensile test specimens, it was observed to show ductile fracture. Welding with a current strength of 180 amperes has met the standard acceptance criteria because no cracks were found on the face bend or the root bend specimen


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Author Biographies

Ilmi Abdullah, Universitas Sumatera Utara

Department Mechanical engineering

Suprianto, Universitas Sumatera Utara

Mechanical engineering

Surya Darma, Politeknik Negeri Medan

mechanical engineering

Hendri Budi Kurniyanto, politeknik perkapalan negeri surabaya

teknik pengelasan


Z. Wang, Z. Zhang, J. Cheng, G. Song, and L. Liu, "Simultaneously increased strength and plasticity of TIG-welded 7075-T6 aluminum alloy joints via a novel post-weld composite treatment process," Journal of Materials Research and Technology, 2023.

C. Zhang, Y. Zhao, D. Liu, F. Niu, G. Ma, and D. Wu, "Effect of pulsed laser frequency on microstructure and mechanical properties of 2219 aluminum alloy welded joints," Optics & Laser Technology, vol. 158, p. 108876, 2023.

L.-j. WU, X.-h. HAN, Y. Biao, B. Hong, X.-g. SONG, and C.-w. TAN, "Effects of welding layer arrangement on microstructure and mechanical properties of gas metal arc welded 5083/6005A aluminium alloy butt joints," Transactions of Nonferrous Metals Society of China, vol. 33, no. 6, pp. 1665-1676, 2023.

T. Rodríguez-Hernández et al., "First assessment on the microstructure and mechanical properties of gtaw-gmaw hybrid welding of 6061-t6 AA," Journal of Manufacturing Processes, vol. 59, pp. 658-667, 2020.

J. Wang, X. Chen, L. Yang, and G. Zhang, "Effect of preheat & post-weld heat treatment on the microstructure and mechanical properties of 6061-T6 aluminum alloy welded sheets," Materials Science and Engineering: A, vol. 841, p. 143081, 2022.

Y. Liang, J. Shen, S. Hu, H. Wang, and J. Pang, "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, vol. 255, pp. 161-174, 2018.

Z. Lu, J. Xu, L. Yu, H. Zhang, and Y. Jiang, "Studies on softening behavior and mechanism of heat-affected zone of spray formed 7055 aluminum alloy under TIG welding," Journal of Materials Research and Technology, vol. 18, pp. 1180-1190, 2022.

K. Kumar, P. Mohan, and M. Masanta, "Influence of welding current on the mechanical property of 3 mm thick commercial 1050 aluminium butt joint weld by AC-TIG welding method," Materials Today: Proceedings, vol. 5, no. 11, pp. 24141-24146, 2018.

P. Jayashree, M. Gowrishankar, S. Sharma, R. Shetty, M. Shettar, and P. Hiremath, "Influence of homogenization and aging on tensile strength and fracture behavior of TIG welded Al6061-SiC composites," Journal of Materials Research and Technology, vol. 9, no. 3, pp. 3598-3613, 2020.

B. Yelamasetti and V. Vardhan, "Weldability and mechanical properties of AA5052 and AA7075 dissimilar joints developed by GTAW process," Materials Today: Proceedings, vol. 47, pp. 4162-4166, 2021.

S. Yan, C. Ma, and H. Chen, "Modifying microstructures and mechanical properties of laser-arc welded joints of dissimilar advanced aluminum alloys," Materials Characterization, vol. 164, p. 110331, 2020.

S. Takhti, M. Reihanian, and A. Ashrafi, "Microstructure characterization and mechanical properties of gas tungsten arc welded cast A356 alloy," Transactions of Nonferrous Metals Society of China, vol. 25, no. 7, pp. 2137-2146, 2015.

A. Deng, H. Chen, Y. Zhang, Y. Liu, X. Yang, and B. Zhang, "Effect of filler materials on the porosity formation of aluminum alloy by laser welding with filler wire," Optics & Laser Technology, vol. 159, p. 109000, 2023.

Y. Liang, S. Hu, J. Shen, H. Zhang, and P. Wang, "Geometrical and microstructural characteristics of the TIG-CMT hybrid welding in 6061 aluminum alloy cladding," Journal of materials processing technology, vol. 239, pp. 18-30, 2017.

B. P. Nagasai, A. Ramaswamy, and J. Mani, "Tensile properties and microstructure of surface tension transfer (STT) arc welded AA 6061-T6 aluminum alloy joints," Materials Today: Proceedings, 2023.

Q. Wang et al., "Tensile properties of TIG welded 2219-T8 aluminum alloy joints in consideration of residual stress releasing and specimen size," Journal of Materials Research and Technology, vol. 18, pp. 1502-1520, 2022.

Z. Wan et al., "Microstructure-based modeling of the PMZ mechanical properties in 2219-T8 aluminum alloy TIG welding joint," Materials & Design, vol. 223, p. 111133, 2022.