Experimental Comparison of Al5083 Alloy Subjected to Annealing and Equal-Channel Angular Pressing

Abstract

In this study, the hardness and electrical resistivity of Al5083 alloy were investigated after equal-channel angular pressing (ECAP) and annealing processes. The effects of the annealing and ECAP processes on the properties of the alloy were investigated, and the results of the processes were compared with each other. The major reason for the different results between the two processes was changes in the microstructure, which were observed by optical microscopy and scanning electron microscopy. The results showed that, ECAP decrease the grain size, in parallel with it increase the hardness and electrical resistivity of material.

Keywords

• Al5083,ECAP,SPD,Microstructure,Hardness

References

1. [1] Valiev, R. Z., Islamgaliev, R. K., Alexandrov, I. V. “Bulk nanostructured materials from severe plastic deformation”. Progress in Materials Science, 45(2), pp. 103–189. 2000. DOI:10.1016/S0079-6425(99)00007-9
2. [2] Valiev, R. Z., Langdon, T. G. “Principles of equal-channel angular pressing as a processing tool for grain refinement”. Progress in Materials Science, 51(7), pp. 881–981, 2006. DOI:10.1016/j.pmatsci.2006.02.003
3. [3] Kaya, H., Uçar, M. “The effects of mechanical properties on fatigue behavior of ecap’ ed aa7075”. High temperature materials and processes, 35(3), pp. 225–234, 2016. DOI: 10.1515/htmp-2014-0193
4. [4] Kaya, H., Uçar, M., Cengiz, A., Samur, R., Özyürek, D., Çalişkan, A. “Novel molding technique for ECAP process and effects on hardness of AA7075”. Mechanika, 20 (1), pp. 5–10, 2014. DOI: 10.5755/j01.mech.20.1.4207
5. [5] Need, R.F., Alexander, D.J., Field, R.D., Livescu, V., Papin, P., Swenson, C.A., Mutnick, D.B. “The effects of equal channel angular extrusion on the mechanical and electrical properties of alumina dispersion-strengthened copper alloys”. Materials Science and Engineering A, 565, pp. 450–458, 2013. DOI: 10.1016/j.msea.2012.12.007.
6. [6] Singh, D., Jayaganthan, R., Nageswara Rao, P., Kumar, A. & Venketeswarlu, D. ‘Effect of initial grain size on microstructure and mechanical behavior of cryorolled AA 5083’, Materials Today: Proceedings, 4 (8), pp. 7609–17, 2017. DOI: 10.1016/j.matpr.2017.07.094
7. [7] Esgin, U., Özyürek, D., KAYA, H. “Investigation of wear behavior of precipitation-strengthened nickel-copper based K-500 alloy produced by powder metallurgy”. Acta Physica Polonica A, 129, pp. 544–547, 2016.
8. [8] Chen, Y. J., Chai, Y. C., Roven, H. J., Gireesh, S. S., Yu, Y. D., & Hjelen, J. “Microstructure and mechanical properties of Al–xMg alloys processed by room temperature ECAP”. Materials Science and Engineering: A, 545, pp. 139–147, 2012. DOI: 10.1016/j.msea.2012.03.012

9. [9] Fakhar, N., Fereshteh-Saniee, F., & Mahmudi, R. “High strain-rate superplasticity of fine- and ultrafine-grained AA5083 aluminum alloy at intermediate temperatures”. Materials & Design, 85, 342–348, 2015.DOI: 10.1016/j.matdes.2015.06.15
10. [10] Lipińska M, Bazarnik P, Lewandowska M. “The influence of severe plastic deformation processes on electrical conductivity of commercially pure aluminium and 5483 aluminium alloy”. Archives of Civil and Mechanical Engineering, 16 (4), pp. 717–23. 2016 DOI: /10.1016/j.acme.2016.04.013