Analysis of tensile strength and microstructure on GTAW- Aluminum 6061 welding results

Ardani Ahsanul Fakhri, Universitas Negeri Yogyakarta, Indonesia
Basyirun Basyirun, Universitas Negeri Semarang, Indonesia
Ahmad Fikrie, Universitas Negeri Yogyakarta, Indonesia
Prihatno Kusdiyarto, National Taiwan University of Science and Technology, Taiwan, Province of China


The process of joining aluminum metal requires a special welding method. The use of GTAW welding is a suitable method for joining aluminum plates. This research is intended to analyze the tensile strength and microstructure of the GTAW Aluminum 6061 welding with various currents. The research method used in this research is experimental research. Welding current variations used in this study were 100A, 115A, and 130A, then tested using a destructive test, tensile test. The data analysis used in this study is descriptive analysis, where the data obtained are averaged and then described and concluded. The results of microstructure research on GTAW welding show that changes in the microstructure are very visible in the HAZ area and the weld metal, the greater the heat input, the more spread the Mg2Si grains will be. Good structural dispersion only occurs at 130A current. This is different from the base metal which does not change the material structure at all. Based on the tensile test, the tensile stress value is 80.9 MPa at 100 A current, 84.9 MPa at 115A current variation, and the highest tensile strength is 86.7 MPa at 130A current. So, it can be concluded that the higher the current used, the better the microstructure and tensile strength produced.


tensile strength; microstructure; GTAW; Aluminum

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Administrator, “Indonesia Menuju Industri Aluminium Berdikari,”, 2022. .

P. E. Wicaksono, “INKA Ingin Inalum Pasok Bahan Baku Buat Badan Kereta,” 2019.

M. Tisza and I. Czinege, “Comparative study of the application of steels and aluminium in lightweight production of automotive parts,” Int. J. Light. Mater. Manuf., vol. 1, no. 4, pp. 229–238, 2018.

H. Wiryosumarto and T. Okumura, “L4H $ fiLT,” Teknol. Pengelasan Logam, vol. 8, 2000.

C. Chen, G. Sun, W. Du, Y. Li, C. Fan, and H. Zhang, “Influence of heat input on the appearance , microstructure and microhardness of pulsed gas metal arc welded Al alloy weldment,” J. Mater. Res. Technol., vol. 21, pp. 121–130, 2022.

N. H. Manh et al., “Development of a novel GTAW process for joining ultra-thin metal sheets,” J. Manuf. Process., vol. 80, no. May, pp. 683–691, 2022.

Y. W. Muzamil Khusaini, Fadelan, “Pengaruh Kuat Arus Terhadap Kekuatan Tarik dan Struktur Mikro pada Pengelasana MIG (Metal Inert Gas) Aluminium Muzamil,” vol. 1, pp. 25–29, 2021.

D. Sathishkumar and A. D. Das, “Investigations on effect of process parameters on GTAW of aluminium alloy welding using full factorial design technique,” Mater. Today Proc., vol. 37, no. Part 2, pp. 621–626, 2020.

H. Sonawan and R. Suratman, “Pengantar untuk Memahami Proses Pengelasan Logam,” Bandung Alfa Beta, 2004.

W. Pranajaya, U. Budiarto, and A. Wibawa, “Analisa Pengaruh Variasi Kampuh Las dan Arus Listrik Terhadap Kekuatan Tarik dan Struktur Mikro Sambungan Las TIG (Tungsten Inert Gas) Pada Aluminium 6061,” Tek. Perkapalan, vol. 5, no. 2, pp. 421–430, 2017.

R. T. Wicaksono, S. Suharno, and B. Harjanto, “Pengaruh Kuat Arus Pada Pengelasan Paduan Aluminium 6061 Dengan Menggunakan Metode Las Tig Terhadap Kekerasan Dan Struktur Mikro,” NOZEL J. Pendidik. Tek. Mesin, vol. 1, no. 1, p. 37, 2019.

S. Dharma et al., “Jurnal Rekayasa Mesin Pengaruh Kuat Arus terhadap Sifat Mekanis pada Alumunium Al-Si-Fe dengan Filler Er 4043 Metode Pengelasan GTAW Surya Dharma dkk / Jurnal Rekayasa Mesin,” vol. 17, no. 1, pp. 103–112, 2022.

A. Jukliv and P. Yoedhawan, “Analisis Kekerasan , Cacat Las , Dan Struktur Mikro Pada Sambungan T Paduan Aluminium 6061 T6511 Hasil Gas Metal Arc Welding ( GMAW ) Dengan Variasi Kuat Arus,” Rotor, vol. 7, no. November, pp. 1–8, 2014.

K. Dan, K. Sambungan, and P. Proses, “Pengelasan Aluminium Dengan Metode Mig,” pp. 275–281, 2015.

G. Zhang, Y. Shi, M. Zhu, and D. Fan, “Effect of electric parameters on weld pool dynamic behavior in GTAW,” J. Manuf. Process., vol. 77, no. February, pp. 369–379, 2022.

K. Zafar, S. Ali, E. Ud, A. Mubashar, N. Bahadur, and S. Waqar, “Experimental investigation of effect of welding parameters on surface roughness , micro-hardness and tensile strength of AISI 316L stainless steel welded joints using 308L filler material by TIG welding Stainless steel,” J. Mater. Res. Technol., vol. 21, pp. 220–236, 2022.



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