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Microstructural study in AA7075 alloys welded with different filler metals

Published online by Cambridge University Press:  11 October 2019

Juan Manuel Salgado L. ,
Abraham Silva Hernandez ,
Francisco Ignacio López Monroy ,
José Luis Ojeda Elizarráras  and
Jesús Mauricio Tello Rico
Juan Manuel Salgado L.*
Affiliation:
Centro de Ingeniería y Desarrollo Industrial; [email protected]
Abraham Silva Hernandez
Affiliation:
Centro de Ingeniería y Desarrollo Industrial; [email protected]
Francisco Ignacio López Monroy
Affiliation:
Centro de Ingeniería y Desarrollo Industrial; [email protected]
José Luis Ojeda Elizarráras
Affiliation:
Centro de Ingeniería y Desarrollo Industrial; [email protected]
Jesús Mauricio Tello Rico
Affiliation:
Centro de Ingeniería y Desarrollo Industrial; [email protected]
*
*Centro de Ingeniería y Desarrollo Industrial; [email protected]
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Abstract

Even though AA 7075 is an aluminum alloy with high mechanical properties, it is not often applied in manufacturing. This is so, because it is considered as very difficult to produce defect free welded joints. This is so, because this alloy has a tendency to hot cracking. The metallurgical problems that appear during welding of AA 7075 have not been fully solved but they have been reduced by applying alloys such as: 4043 and 5356 as filler metals. However, in literature there is little information about the metallurgical effects of these types of filler metals applied in arc welded joints of AA7075. This is especially true for Tungsten Inert gas welding. Therefore, this work is focused in comparing the microstructure and Vickers microhardness in weldments of AA 7075 with ER4043, ER5356 and AA7075 as filler metals. Besides, a set of welded joints with the three different filler metals were quenched after welding in order to modify the final microstructure. The results were evaluated by microstructural analysis focused on the Heat Affected Zone and Vickers microhardness and they were compared among them.

Keywords

Alalloyweldingmicrostructure
Type
Articles
Information
MRS Advances , Volume 4 , Issue 55-56: International Materials Research Congress XXVIII , 2019 , pp. 3017 - 3029
Copyright
Copyright © Materials Research Society 2019 

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References

Temmar, M., Hadji, M., and Sahraoui, T. Effect of post-weld aging treatment on mechanical properties of Tungsten Inert Gas welded low thickness 7075 aluminum alloy joints. Materials & Design, 32(6), 3532-3536, (2011).CrossRefGoogle Scholar
Raghavan, V. Al-Mg-Zn (Aluminum-Magnesium-Zinc). Journal of phase equilibria and diffusion, 28(2), 203-208 , (2007).CrossRefGoogle Scholar
Balasubramanian, V., Ravisankar, V., and Reddy, G. M. Effect of postweld aging treatment on fatigue behavior of pulsed current welded AA7075 aluminum alloy joints. Journal of Materials Engineering and Performance, 17(2), 224-233, (2008).CrossRefGoogle Scholar
Sivashanmugam, M., Kumar, T., Shanmugam, C. J., and Sathishkumar, M.; Investigation of microstructure and mechanical properties of GTAW and GMAW joints on AA7075 aluminum alloy. In Frontiers in Automobile and Mechanical Engineering (FAME), 241-246, (2010).Google Scholar
Ghodwade, U. K., Patil, S. S., and Gogte, C. L. Experimental study of MIG welding and solid state welding for age hardenable AA 7075 aluminum alloy, IIJME vol.3, 46-52 ,(2015).Google Scholar
Pfeifer, T., and Rykała, J. Welding EN AW 7075 Aluminum Alloy Sheets–Low-energy Versus Pulsed Current. Biuletyn Instytutu Spawalnictwa w Gliwicach, 58(5), 137-144, (2014).Google Scholar
Ola, O. T.; Doern, F. E. Fusion weldability studies in aerospace AA7075-T651 using high-power continuous wave laser beam techniques. Materials & Design, vol. 77, p. 50-58, (2015).CrossRefGoogle Scholar
Hu, B.; Richardson, I. M. Mechanism and possible solution for transverse solidification cracking in laser welding of high strength aluminium alloys. Materials Science and Engineering: A, vol. 429, no 1-2, p. 287-294, (2006).CrossRefGoogle Scholar
Ghaini, F. Malek, et al. The relation between liquation and solidification cracks in pulsed laser welding of 2024 aluminium alloy. Materials Science and Engineering: A, vol. 519, no 1-2, p. 167-171, (2009).CrossRefGoogle Scholar
Deekhunthod, R. N. (2014). Weld Quality in Aluminium Alloys PhD thesisGoogle Scholar
Holzer, M., Hofmann, K., Mann, V., Hugger, F., Roth, S., & Schmidt, M. (2016). Change of hot cracking susceptibility in welding of high strength aluminum alloy AA 7075. Physics Procedia, 83, 463-471.CrossRefGoogle Scholar
Ngernbamrung, S., Suzuki, Y., Takatsuji, N., & Dohda, K. (2018). Investigation of surface cracking of hot-extruded AA7075 billet. Procedia Manufacturing, 15, 217-224.CrossRefGoogle Scholar
Ambriz, R. R., & Jaramillo, D. (2014). Mechanical behavior of precipitation hardened aluminum alloys welds. In Light Metal Alloys Applications. IntechOpen.Google Scholar