Analysis of mechanical properties, microstructure, and distortion of Al6061-T6 alloys plate using GTA and GMA welding process

Suherman Suherman; Muharnif Muharnif; Marzuki Marzuki; Yusuf Lubis; Muhammad Ade syahputra Pohan; Rakha Ramdan Aulia; Rizki M Ali; Ilmi Abdullah; Azmi Wan Hamzah

doi:10.30811/jpl.v23i2.6261

Analysis of mechanical properties, microstructure, and distortion of Al6061-T6 alloys plate using GTA and GMA welding process

Suherman Suherman, Muharnif Muharnif, Marzuki Marzuki, Yusuf Lubis, Muhammad Ade syahputra Pohan, Rakha Ramdan Aulia, Rizki M Ali, Ilmi Abdullah, Azmi Wan Hamzah

Abstract

This study compares the effect of filler metal and welding current of gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW) on Aluminium alloy Al6061-T6. Three different filler metals, ER4043, ER4047, and ER5356, were used with the GTAW welding process. The welded joints were created at three different welding currents (120, 130, and 140 A) by the GMAW with filler metals ER5356. Optical and scanning electron microscopy (SEM) is used to analyze the surface fracture of impact test welding joints. The results showed that the GMAW process had the most optimum Ultimate Tensile Strenght (UTS) compared to the GTAW welding joint, especially for welding current 130 A. The impact strength of ER4047 filler metal with the GTAW process is higher than other joints (61 J/cm²). Optimum conditions were obtained by the GMAW welding process using a welding current of 130 A with maximum tensile strength and impact strength of 350 MPa and 53 J/cm2, respectively. SEM analysis showed obtained Mg2Si a globular morphology in ER4047 and ER5356 filler metals, and the dimples fracture is indicated at all joints with the GMAW and GTAW processes. Furthermore, increasing welding current by the GMAW process causes higher angular distortion, reduced vickers hardness but does not significantly affect the weld bead. Overall, the GMAW produces better physical and mechanical properties of weld joint compared to GTAW for all types of filler metals but results in greater angular distortion

Keywords

Al6061; GTAW; GMAW; ER4047;ER5356

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References

R. Rajeshkumar, V. Niranjani, K. Devakumaran, and K. Banerjee, "Evolution of non-dendritic equiaxed zone and its influence on mechanical properties of tungsten inert gas welded dissimilar A6061-T6 and A6082-T6 joint," Materials Letters, vol. 303, p. 130569, 2021.

Y. Jie, J.-m. Zhang, S.-f. Cao, and P.-c. Guo, "Effect of welding sequence on residual stress and deformation of 6061-T6 aluminium alloy automobile component," Transactions of Nonferrous Metals Society of China, vol. 29, no. 2, pp. 287-295, 2019.

T. RodrÃguez-HernÃ¡ndez 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.

H. Wang, X. Liu, and L. Liu, "Research on laser-TIG hybrid welding of 6061-T6 aluminum alloys joint and post heat treatment," Metals, vol. 10, no. 1, p. 130, 2020.

L. Zhang, H. Zhong, S. Li, H. Zhao, J. Chen, and L. Qi, "Microstructure, mechanical properties and fatigue crack growth behavior of friction stir welded joint of 6061-T6 aluminum alloy," International Journal of Fatigue, vol. 135, p. 105556, 2020.

M. Kumar, A. Das, and R. Ballav, "Influence of the Zn interlayer on the mechanical strength, corrosion and microstructural behavior of friction stir-welded 6061-T6 aluminium alloy and AZ61 magnesium alloy dissimilar joints," Materials Today Communications, vol. 35, p. 105509, 2023.

D. Priyasudana, S. A. Crisdion, P. Puspitasari, and D. D. Pramono, "Double side friction stir welding effect on mechanical properties and corrosion rate of aluminum alloy AA6061," Heliyon, vol. 9, no. 2, 2023.

Y. Jie, W. Guan, S.-k. Li, Z.-w. Liu, and Y.-l. Gong, "Effect of post-weld heat treatment on microstructure and mechanical properties of welded joints of 6061-T6 aluminum alloy," Transactions of Nonferrous Metals Society of China, vol. 29, no. 10, pp. 2035-2046, 2019.

H. Tu, S. Schmauder, and U. Weber, "Simulation of the fracture behavior of Al6061 laser welded joints with the Rousselier model," Computational Materials Science, vol. 116, pp. 122-128, 2016.

J. Cheng, Z. Zhang, X. Dong, G. Song, and L. Liu, "A novel post-weld composite treatment process for improving the mechanical properties of AA 6061-T6 aluminum alloy welded joints," Journal of Manufacturing Processes, vol. 82, pp. 15-22, 2022.

R. Rajeshkumar, K. Devakumaran, and K. Banerjee, "Role of interfacial microstructure on mechanical properties of cold metal transfer welded dissimilar A6061-T6 and A6082-T6 joints," Materials Letters, vol. 279, p. 128521, 2020.

T. Soysal and S. Kou, "Effect of filler metals on solidification cracking susceptibility of Al alloys 2024 and 6061," Journal of Materials Processing Technology, vol. 266, pp. 421-428, 2019.

C. Rathinasuriyan, V. S. Kumar, and S. V, "Mechanical and metallurgical properties of GTAW, GMAW and FSW lap joints on AA6061-T6 Alloy," Advances in Materials and Processing Technologies, vol. 8, no. 3, pp. 3231-3247, 2022.

X. Wu, X. Zhao, J. Chen, Z. Zhang, and C. Wu, "Simulation of the influence of welding parameters on weld pool behavior during a TIG-MIG hybrid welding process," Journal of Manufacturing Processes, vol. 79, pp. 460-475, 2022.

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," Journal of Materials Research and Technology, vol. 21, pp. 121-130, 2022.

Y. Zhao, F. Chen, S. Cao, C. Chen, and R. Xie, "Effect of CMT welding heat input on microstructure and properties of 2A14 aluminum alloy joint," Metals, vol. 12, no. 12, p. 2100, 2022.

H. Rojas et al., "The impact of heat input on the microstructures, fatigue behaviors, and stress lives of TIG-welded 6061-T6 alloy joints," Materials Research Express, vol. 7, no. 12, p. 126512, 2020.

I. Sabry, A.-H. I. Mourad, and D. T. Thekkuden, "Optimization of metal inert gas-welded aluminium 6061 pipe parameters using analysis of variance and grey relational analysis," SN Applied Sciences, vol. 2, pp. 1-11, 2020.

P. Arunakumara, S. HN, and B. Gautam, "Study of fatigue crack growth of al 6061-T6 welds obtained by gas metal arc welding along longitudinal direction," Cogent Engineering, vol. 11, no. 1, p. 2339469, 2024.

I. GuzmÃ¡n, E. Granda, J. Acevedo, A. MartÃnez, Y. DÃ¡vila, and R. VelÃ¡zquez, "Comparative in mechanical behavior of 6061 aluminum alloy welded by pulsed GMAW with different filler metals and heat treatments," Materials, vol. 12, no. 24, p. 4157, 2019.

R. Ahmad and M. Bakar, "Effect of a post-weld heat treatment on the mechanical and microstructure properties of AA6061 joints welded by the gas metal arc welding cold metal transfer method," Materials & Design, vol. 32, no. 10, pp. 5120-5126, 2011.

H. Zhou, F. Fu, Z. Dai, Y. Qiao, J. Chen, and W. Liu, "Effect of laser power on microstructure and micro-galvanic corrosion behavior of a 6061-T6 aluminum alloy welding joints," Metals, vol. 11, no. 1, p. 3, 2020.

K. Sripriyan, M. Ramu, K. Anantharuban, and M. Karthigha, "Characteristic of weld bead using flat wire electrode in GMAW inline during the process: An experimental and numerical analysis," International Journal of Pressure Vessels and Piping, vol. 196, p. 104623, 2022.

A. Ramaswamy, S. Malarvizhi, and V. Balasubramanian, "Influence of Metal Transfer Modes and Postweld Heat Treatment on Tensile Properties of Gas Metal Arcâ€“Welded AA6061-T6 Aluminum Alloy Joints," Materials Performance and Characterization, vol. 9, no. 1, pp. 9-24, 2020.

J. A. Vargas, J. E. Torres, J. A. Pacheco, and R. J. Hernandez, "Analysis of heat input effect on the mechanical properties of Al-6061-T6 alloy weld joints," Materials & Design (1980-2015), vol. 52, pp. 556-564, 2013.

K. Mutombo and M. Du Toit, "Corrosion fatigue behaviour of aluminium alloy 6061-T651 welded using fully automatic gas metal arc welding and ER5183 filler alloy," International Journal of Fatigue, vol. 33, no. 12, pp. 1539-1547, 2011.

S.-W. Han, G. Lee, H. Kim, M.-S. Kim, Y.-R. Jo, and J. Cho, "Effect of weld geometry on fatigue performance of 6061-T6 aluminum GMAW: part 1. Butt joint," Journal of Mechanical Science and Technology, vol. 36, no. 10, pp. 5201-5208, 2022.

A. Khoshroyan and A. R. Darvazi, "Effects of welding parameters and welding sequence on residual stress and distortion in Al6061-T6 aluminum alloy for T-shaped welded joint," Transactions of Nonferrous Metals Society of China, vol. 30, no. 1, pp. 76-89, 2020.

G. Zhou, B. Liu, W. Song, H. Li, J. Kuang, and M. Qiu, "Controlling welding residual stress and distortion of high-strength aluminum alloy thin plates by a trailing hybrid high-speed gas fluid field," Materials, vol. 15, no. 18, p. 6451, 2022.

K. Dahiya, P. Mehrotra, and P. Khanna, "Mathematical modelling to predict angular distortion in MIG welding of aluminium 6063 plates," Materials Today: Proceedings, vol. 62, pp. 3183-3188, 2022.

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.

F. Fadaeifard, K. A. Matori, F. Garavi, M. Al-Falahi, and G. V. Sarrigani, "Effect of post weld heat treatment on microstructure and mechanical properties of gas tungsten arc welded AA6061-T6 alloy," Transactions of Nonferrous Metals Society of China, vol. 26, no. 12, pp. 3102-3114, 2016.

Z. Nikseresht, F. Karimzadeh, M. Golozar, and M. Heidarbeigy, "Effect of heat treatment on microstructure and corrosion behavior of Al6061 alloy weldment," Materials & Design (1980-2015), vol. 31, no. 5, pp. 2643-2648, 2010.

A. Mathivanan, K. Devakumaran, and A. S. Kumar, "Comparative study on mechanical and metallurgical properties of AA6061 aluminum alloy sheet weld by pulsed current and dual pulse gas metal arc welding processes," Materials and Manufacturing Processes, vol. 29, no. 8, pp. 941-947, 2014.

M. Arun and K. Ramachandran, "Effect of welding process on mechanical and metallurgical properties of AA6061 aluminium alloy lap joint," International Journal of Mechanical Engineering and Research, vol. 5, no. 1, 2015.

S. Kou, "Welding Metallurgy Wiley Interscience," Hoboken NJ, 2003.

J. Li, J. Shen, S. Hu, Y. Liang, and Q. Wang, "Microstructure and mechanical properties of 6061/7N01 CMT+ P joints," Journal of Materials Processing Technology, vol. 264, pp. 134-144, 2019.

B. Alzahrani, M. M. Ahmed, M. I. Habba, R. A. Fouad, Y. G. Elshaghoul, and E. A. Gadallah, "TIG Welding of EN AW-6082 Al Alloy: A Comparative Analysis of Filler Rods on Microstructural and Mechanical Performance," Journal of Manufacturing and Materials Processing, vol. 9, no. 1, p. 21, 2025.

H. Hemmatpour and M. Mohtadi-Bonab, "A new approach based on a concurrent cooling method during GTAW and DC-LSND welding to mitigate residual stresses in Al 6061-T6," Journal of Adhesion Science and Technology, pp. 1-19, 2024.

Q. Wang, Y. Zhao, T. Zhao, D. Yan, G. Wang, and A. Wu, "Influence of restraint conditions on residual stress and distortion of 2219-T8 aluminum alloy TIG welded joints based on contour method," Journal of Manufacturing Processes, vol. 68, pp. 796-806, 2021.

A. YÃ¼rÃ¼k, B. Ã‡evik, and N. Kahraman, "Analysis of mechanical and microstructural properties of gas metal arc welded dissimilar aluminum alloys (AA5754/AA6013)," Materials Chemistry and Physics, vol. 273, p. 125117, 2021.

Y. Wang, M. Chen, and C. Wu, "HF pulse effect on microstructure and properties of AC TIG butt-welded joint of 6061Al alloy," Journal of Manufacturing Processes, vol. 56, pp. 878-886, 2020.

M. Samiuddin, J.-l. Li, M. Taimoor, M. N. Siddiqui, S. U. Siddiqui, and J.-t. Xiong, "Investigation on the process parameters of TIG-welded aluminum alloy through mechanical and microstructural characterization," Defence Technology, vol. 17, no. 4, pp. 1234-1248, 2021.

H. Mehdi and R. Mishra, "Investigation of mechanical properties and heat transfer of welded joint of AA6061 and AA7075 using TIG+ FSP welding approach," Journal of Advanced Joining Processes, vol. 1, p. 100003, 2020.

B. Xu, G. Jin, Z. Zhang, J. Wang, and X. Zhan, "Effect on the property of 2195 Al-Li alloy laser-welded joints with different filler materials," Metals, vol. 13, no. 5, p. 958, 2023.

J. Li et al., "Effect of filling materials on microstructure and properties of CMT-laser beam oscillation hybrid welding behavior of dissimilar Alâ€“Mgâ€“Si alloys," Journal of Materials Research and Technology, vol. 26, pp. 8272-8288, 2023.

J. Wang, X. Chen, L. Yang, and G. Zhang, "Sequentially combined thermo-mechanical and mechanical simulation of double-pulse MIG welding of 6061-T6 aluminum alloy sheets," Journal of Manufacturing Processes, vol. 77, pp. 616-631, 2022.

S. Khrais, H. Al Hmoud, A. Abdel Al, and T. Darabseh, "Impact of gas metal arc welding parameters on bead geometry and material distortion of AISI 316L," Journal of Manufacturing and Materials Processing, vol. 7, no. 4, p. 123, 2023.

DOI: http://dx.doi.org/10.30811/jpl.v23i2.6261