Tribological Performance and Microstructural Analysis of an Aluminium Alloy Based Hybrid Composite Produced by P/M

Abstract:

In the field of material science and engineering, there is a great impact ever since the invention of composites materials. High strength to weight ratio provides the attractive combination that moves composite materials into new era. The conventional materials like cast iron, steel, and aluminium alloy are replaced by the composite materials due to its superficial properties and could be applied in aerospace and automotive applications. Powder metallurgy fabrication technique is one of the best and attractive methods for producing metal matrix composites because of its better distribution of particles and reliability and cost in manufacturing. In this paper, composites based on aluminium alloy (Al 2024) reinforced with 10% weight fraction of hard ceramics like Aluminium oxide (Al₂O₃) and 10% weight fraction of Aluminium oxide (Al₂O₃) with 5% graphite particles is produced by Powder metallurgy method. Hardness and wear test are conducted for the Al 2024, Al-10%Al₂O_3, and Al-10% Al₂O₃-5% Graphite. In addition the surfaces of the composite are analyzed by SEM to study the wear of the composites.

• Periodical: Applied Mechanics and Materials (Volumes 766-767)
• Pages: 320-323
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.766-767.320
• Online since: June 2015
• Authors: N Karthik*, S. Prabhu, Sahil Santosh, Ashutosh Singh
• Keywords: Aluminium Alloy, Graphite, Hardness, MMC, SEM, Wear

References

[1] M. Kok, Production and mechanical properties of Al2O3 particle-reinforced 2024 aluminium alloy composites. J Mater Process Technol 2005; 161: 381–7.

DOI: 10.1016/j.jmatprotec.2004.07.068

[2] H. Sevik , SC. Kurnaz , Properties of alumina particulate reinforced aluminium alloy produced by pressure die casting. Mater Des 2006; 27: 676–83.

DOI: 10.1016/j.matdes.2005.01.006

[3] LA. Dobrzanski , A. Wlodarczyk , M. Adamiak , The structure and properties of PM composite materials based on EN AW-2124 aluminium alloy reinforced with the BN or Al2O3 ceramic particles. J Mater Process Technol 2006; 175: 186–91.

DOI: 10.1016/j.jmatprotec.2005.04.031

[4] JM. Torralba , CE. daCost , F. Velasco , P/M aluminium matrix composites: an overview. J Mater Process Technol 2003; 133: 203–6.

[5] B. Torres , H. Lieblich , J. Ibanez , A. Garcia-Escorial , Mechanical properties of some PM aluminide and silicide reinforced 2124 aluminium matrix composites. Scripta Mater 2002; 47: 45.

DOI: 10.1016/s1359-6462(02)00095-7

[6] Y. Sahin , S. Murphy, The effect of fibre orientation of the dry sliding wear of borsic- reinforced 2014 aluminium alloy. J Mater Sci 1996; 34: 5399–407.

DOI: 10.1007/bf01159309

[7] KH. Min, SP. Kang, DG. Kim, YD. Kim , Sintering characteristic of Al2O3-reinforced 2xxx series Al composite powders. J Alloys Compd 2005; 400: 150–3.

DOI: 10.1016/j.jallcom.2005.03.070

[8] Metals handbook, powder metallurgy. 9th ed. vol. 7. American Society for Metals; (1993).

[9] AM. Al-Qutub, IM. Allam, TW . Qureshi, Effect of sub-micron Al2O3 concentration on dry wear properties of 6061 aluminium based composite. J Mater Process Technol 2006; 172: 327–31.

DOI: 10.1016/j.jmatprotec.2005.10.022

[10] RM . German, Sintering theory and practice. New York: Wiley; (1996).