World Academy of Science, Engineering and Technology
Published May 3, 2015 | Version 10001504
Journal article Open

A Metallography Study of Secondary A226 Aluminium Alloy Used in Automotive Industries

Description

The secondary alloy A226 is used for many automotive casting produced by mould casting and high pressure die casting. This alloy has excellent castability, good mechanical properties and cost-effectiveness. Production of primary aluminium alloys belong to heavy source fouling of life environs. The European Union calls for the emission reduction and reduction in energy consumption therefore increase production of recycled (secondary) aluminium cast alloys. The contribution is deal with influence of recycling on the quality of the casting made from A226 in automotive industry. The properties of the casting made from secondary aluminium alloys were compared with the required properties of primary aluminium alloys. The effect of recycling on microstructure was observed using combination different analytical techniques (light microscopy upon black-white etching, scanning electron microscopy - SEM upon deep etching and energy dispersive X-ray analysis - EDX). These techniques were used for the identification of the various structure parameters, which was used to compare secondary alloy microstructure with primary alloy microstructure.

Files

10001504.pdf

Files (1.7 MB)

Name Size
md5:6c64b350ae334b504e76ea980b312e3c
1.7 MB Preview Download

Additional details

References

  • L. Senčáková, and E. Virčíková, "Life cycle assessment of primary aluminium production,"Acta Metallurgica Slovaca, vol. 13, No. 3, 2007, pp. 412-419.
  • K. S. Das, "Designing Aluminum Alloys for a Recycling Friendly World," Materials Science Forum, vol. 519-521, 2006, pp. 1239-1244.
  • J. Cui, and H. R. Roven, "Recycling of automotive aluminium," Transactions nonferrous metal Society China, vol. 20, 2010, pp. 2057- 2063.
  • G. E. Totten, and D.S. MacKenzie, "Hanbook of aluminium alloy production and materials manufacturing," vol. 2, United State - Taylor and Francis 2003, ch. 4.
  • S. Seifeddine, "The influence of Fe on the microstructure and mechanical properties of cast Al-Si alloys." Literature review - Vilmer project. Jönköping University, Sweden, 2007.
  • E. Tillová, M. Chalupová, and L. Hurtalová, "Evolution of the Fe-rich phases in recycled AlSi9Cu3 cast alloy during solution treatment," Communications, vol. 12, No. 4, 2010, pp. 95-101.
  • K. Labisz, M. Krupiński, and L.A. Dobrzański,"Phases morphology and distribution of the Al-Si-Cu alloy," Journal of Achievements in Materials and Manufacturing Engineering, vol. 37, Is. 2, Dec. 2009, pp. 309-316.
  • L. Hurtalová, and E. Tillová, "Evolution of the structure in recycled AlSI9Cu3 cast alloy during solution treatment," Journal of Machine Manufacturing: Desing and Manufacturing, vol. 49, 2009, E3-E5, pp. 6- 13.
  • E. Tillová, M. Chalupová, L. Hurtalová, M. Bonek, and L. A. Dobrzanski, "Structural analysis of heat treated automotive cast alloy," Journal of Achievements in Materials and Manufacturing Engineering, vol. 47/1, 2011, pp. 19-25. [10] E. Tillová, and M. Panušková, "Effect of solution treatment on intermetallic phase's morphology in AlSi9Cu3 cast alloy,"Metallurgija, vol. 47, Is. 3, 2008, pp. 207-210. [11] L. Hurtalová, and E. Tillová,"On the mechanical properties and structure of age-hardened AlSi9Cu3 cast alloy," International Journal of Applied Mechanics and Engineering, vol. 15, No. 2, 2010, pp. 355-362. [12] E. Tillová, and M. Panušková, "Effect of solution treatment on intermetallic phase's morphology in AlSi9Cu3 cast alloy," Materials Engineering, vol. 14, Is. 2, 2007, pp. 73-76. [13] E. Sjőlander, and S. Seifeddine, "The heat treatment of Al-Si-Cu-Mg casting alloys," Journal of Materials Processing Technology, vol. 210, Is. 10, 1 July 2010, pp. 249-1259. [14] M. Abdulwahab, "Studies of the mechanical properties of age-hardened Al-Si-Fe-Mn Alloy," Australian Journal of Basic and Applied Sciences, vol. 2, Is. 4, 2008, pp. 839-843. [15] C. T. Rios, and R.Caram, "Intermetallic compounds in the Al-Si-Cu system,"Acta Microscopica, vol.12, N°1, 2003, pp. 77-81. [16] "ASM Metals Handbook Metallography and Microstructures". 9th edition, vol. 9 - AM International, 2004. [17] C. H. Caceres, I. L. Svenson, and J. A. Taylor, "Strength-ductility behaviour of Al-Si-Cu-Mg casting alloys in T6 temper," Int. J. Cast Metals Res., No. 15, 2003, pp. 531-543. [18] S. Seifeddine, S. Johansson, and I. Svensson, "The influence of cooling rate and manganese content on the β-Al5FeSi phase formation and mechanical properties of Al-Si-based alloys," Materials Science and Engineering A, No. 490, 2008, pp. 385-390. [19] J. A. Taylor, "The effect of iron in Al-Si casting alloys". 35th Australian Foundry Institute National Conference, Adelaide, South Australia 2004, pp. 148-157. [20] Z. Ma, A. M. Samuel, F. H. Samuel, H. W. Doty, and S.Valtierra, "A study of tensile properties in Al-Si-Cu and Al-Si-Mg alloys: Effect of β- iron intermetallics and porosity". Materials Science and Engineering A, vol. 490, 2008, pp. 36-51. [21] H. Y. Kim, T. Y. Park, S. W. Han, and L. H. Mo, "Effects of Mn on the crystal structure of α-Al(Mn,Fe)Si particles in A356 alloys," Journal of Crystal Growth, vol. 291, Is. 1, 2006, pp. 207-211.