Microstructural Investigation of Aluminum Alloys Type "2024" for the Aviation Industry

Abstract:

This paper presents experimental results revealed on the samples type 2024 aluminum alloy used in aeronautics. The results of microstructural and compositional investigations presented in this paper were performed on samples taken from 2024 Al alloy samples produced by ALRO Slatina. The main objective of the investigation is the conformity assessment of alloys in terms of chemical composition with the specifications type of aviation [SAE AMS 47N, EN 515, etc]. It also aims microstructural conformity assessment in terms of the grain and the hardening effects by natural or artificial aging applied by the manufacturer. Adequate characterization of 2024 aluminum alloys type was achieved by combined investigations: (i) Wet Chemical Analysis, (ii) Spectrochemical Analysis and (iii) Electron Microscopy. The main conclusion that emerges from the investigations carried out on aluminum samples revealed that: (a) alloys fits in terms of composition with the standard specification for 2024, in all cases; (b) microstructure vary in fineness of grain, but meets the requirements of aviation rules; the investigated microstructures have been appreciated as adequate of aluminum alloys type "2024".

• Periodical: Advanced Materials Research (Volume 1114)
• Pages: 62-67
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1114.62
• Online since: July 2015
• Authors: Florina Violeta Anghelina, Vasile Bratu, Elena Valentina Stoian, Ileana Nicoleta Popescu*
• Keywords: Aluminium Alloy, Microstructure, Scanning Electron Microscopy

References

[1] N. Popescu, R. Saban, D. Bunea, I. Pencea, Materials Science for Mechanical Engineering, Fair Partners Publisher, Bucharest, (1999).

[2] I.N. Popescu, R Vidu, V. Bratu, A.B. Olei, D.N. Ungureanu, F.V. Anghelina, Effects of Silicon Carbide Proportion and Artificial Aging Parameters on Microstructure and Hardness of Al-Cu/SiCpComposites, Solid State Phenomena, 122.

DOI: 10.4028/www.scientific.net/ssp.216.122

[3] Mario Rosso, Ildiko Peter, R. Villa, Effects of T5 and T6 Heat Treatments Applied to Rheocast A356 Parts for Automotive Applications. In Diffusion And Defect Data, Solid State Data. Part B, Solid State Phenomena, (2008) vol. 141-143, pp.237-242.

DOI: 10.4028/www.scientific.net/ssp.141-143.237

[4] M. Rosso, I. Peter, Defect control on Al castings for excellent quality and improved performances through novel Rheocasting processes. In: 141st Annual Meeting and Exhibition, TMS 2012; Orlando, FL, March 11-15, (2012) pp.403-410.

DOI: 10.1002/9781118357002.ch52

[5] I.N. Popescu, S. Zamfir, D. Bojin, M. Brânzei, D. Gheorghe, L.A. Sorcoi, Physical and quantitative microstructural analysis of sintered Al–Cu/SiCp composites, Materials Science Forum, 672 (2011) 251–254.

DOI: 10.4028/www.scientific.net/msf.672.251

[6] M.C. Enescu, I.N. Popescu, R. Zamfir, A. Molagic, V. Bratu, Experimental researches on the corrosion behavior and microstructural aspects of heat treated Al-Zn-Mg-Cu alloys, International Journal of Energy And Environment, (4) 4 (2010) 122-130.

[7] I.N. Popescu, V. Bratu, M. Rosso, C. Popescu, E.V. Stoian, Designing and continuous extrusion forming of Al-Mg-Si contact lines for electric railway, Journal of Optoelectronics and Advanced Materials 15 (7-8) 712-717.