Optimization of Eutectic Si Particles Morphology in Secondary Al-Si Cast Alloys after Different Heat Treatment

Abstract:

Secondary cast Al-Si alloys containing more of additions elements and forming various structural parameters (intermetallic phases). The optimization of structure parameters morphology is necessary because the mechanical properties depend on changes in morphology of eutectic Si and intermetallic phases in Al-Si cast alloy. This article describes changes of eutectic Si morphology after heat treatment T4 and T6. The morphology changes were observed using combination different analytical techniques - light microscopy (upon black-white etching) and scanning electron microscopy - SEM (upon deep etching). For the experiment was used recycled (secondary) aluminium cast alloy AlSi9Cu3.

• Periodical: Advanced Materials Research (Volumes 1025-1026)
• Pages: 349-354
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1025-1026.349
• Online since: September 2014
• Authors: Lenka Hurtalová*, Eva Tillová, Mária Chalupová
• Keywords: Eutectic Si, Heat Treatment T4, Heat Treatment T6, Optimization of Structure, Secondary Aluminium Alloys, Structural Parameter

References

[1] J.F. Tavitas-Medrano, A.M. Mohamed, E.J. Gruzleski, H. F. Samuel and W.H. Doty: J. Mater. Sci. Vol. 45, No. 3 (2009), p.641.

[2] M. Warmuzek: Aluminium/Silicon Alloys Atlas of Microfractographs, Introduction to Aluminium - Silicon Casting Alloys (2004).

[3] M.A. Moustafa, F.H. Samuel and W.H. Doty: J. Mater. Sci. Vol. 38, No. 22 (2003), p.4507.

[4] M. Samuel, F.H. Samuel and W.H. Doty: J. Mater. Sci. Vol. 31 (1996), p.5529.

[5] F. Sanna, A. Fabrizi, S. Ferraro, G. Timelli, P. Ferro and F. Bonollo:  La Metallurgia Italiana, Vol. 4 (2013), p.13.

[6] M. Panušková, E. Tillová and M. Chalupová: Strengt. Mater. Vol. 1 (2008), p.109.

[7] M. Matvija, M. Fujda, O. Milkovič, T. Kvačkaj, M. Vojtko, P. Zubko and R. Kočiško: Acta Metallurgica Slovaca Vol. 18, No. 1 (2012), p.4.

DOI: 10.12776/amsc.v3i0.109

[8] E. Sjőlander and S. Seifeddine: J. Mater. Process. Technol. Vol. 210, No. 10 (2010), p.1249.

[9] M. Tash, H.F. Samuel, F. Mucciardi and W.H. Doty: Mater. Sci. Eng. Vol. 443, No. 1-2 (2007), p.185.

[10] M. Abdulwahab: Aust. J. Basic. Appl. Sci. Vol. 2, No. 4 (2008), p.839.

[11] H. G. Johansen: Structural Aluminium Materials. TALAT Lecture 2202 - Basic Level (1994).

[12] G. Trenda, http: /foundry-planet. com/fileadmin/redakteur/werbepartner/sag/SolutionsDuctile DieCasting. pdf.

[13] F. Paray and J.E. Gruzleski: Cast. Met. Vol. 7 (1994), p.29.

[14] R. Li: AFS Transaction, Vol. 26 (1996), p.777.

[15] L. Hurtalová, E. Tillová and M. Chalupová: Eng. T. Vol. 61, No. 3 (2013), p.197.

[16] L. Hurtalová and E. Tillová: Manuf. Technol. Vol. 13, No. 1 (2013), p.44.

[17] L. Hurtalová, J. Belan, E. Tillová and M. Chalupová: Medziagotyra, Vol. 18, No. 3 (2012), p.228.

[18] L. Hurtalová, E. Tillová and M. Chalupová: Arch. Mech. Engin. Vol. 59, No. 4 (2012), p.385.