Effect of Sintering Temperature and Magnesium Composition Fraction on the Properties of Al-Cu-Mg-MicroAl₂O₃ Composite Made by Powder Metallurgy

Abstract:

Ideal physical and mechanical properties and lightweight materials are the main requirements in today's transportation and automotive industries. This research aims to determine variations in Mg composition and sintering temperature of aluminum matrix composites using moulds with a powder metallurgy process on the properties and microstructure of the composite. Magnesium particles with a size of 250 μm were added to the Al-Cu-Mg-matrix at different volume ratios (1%, 1.5%). The mixture of Al, Mg, and reinforcement (Cu, ) powder was mixed at 1,500 rpm for 2 hours for homogeneous dispersion. The mixed powder is compacted at 200 MPa and sintered at different temperatures (500°C, 550°C, 600°C) and then allowed to cool slowly in the furnace. Composite character research was then done by testing density using the Archimedes principle, porosity, microhardness, wear rate, SEM characterization, quantitative analysis and EDS mapping. The optimal composite condition is characterized by a relative density of 57.45%, the lowest porosity ratio measured at 7.48%, a microhardness level of 52.1 HV and the lowest wear rate of 0.58 /m in the Al-Cu-Alumina composite with the addition of 1.5% Mg and sintered at a temperature of 600°C. This composite character is supported by the results of microstructure observations using SEM-EDS. The use of micro-in the Al-Cu-Mg composite supports the optimization of physical and mechanical characteristics as a composite worthy of being considered as the material of choice for components of transportation and automotive modes.

• Periodical: Materials Science Forum (Volume 1145)
• Pages: 57-70
• DOI: https://doi.org/10.4028/p-dQf0mA
• Online since: March 2025
• Authors: Hairul Arsyad*, Tommy Tarminsyah, Ilyas Renreng
• Keywords: Aluminum Matrix Composite, Composition, Fraction, Magnesium, Powders Metallurgy, Sintering

References

[1] C.D. Boland, R.L. Hexemer, I.W. Donaldson, and D.P. Bishop, "Industrial processing of a novel Al-Cu-Mg powder metallurgy alloy," Mater. Sci. Eng. A, vol. 559, p.902–908, 2013.

DOI: 10.1016/j.msea.2012.09.049

[2] A. Gökçe, F. Findik, and A. O. Kurt, "Microstructural examination and properties of premixed Al-Cu-Mg powder metallurgy alloy," Mater. Charact., vol. 62, no. 7, p.730–735, 2011.

DOI: 10.1016/j.matchar.2011.04.021

[3] M. Qian and G. B. Schaffer, Sintering of aluminium and its alloys. Woodhead Publishing Limited, 2010.

DOI: 10.1533/9781845699949.3.291

[4] J. M. Martín and F. Castro, "Liquid phase sintering of P/M aluminium alloys: Effect of processing conditions," J. Mater. Process. Technol., vol. 143–144, no. 1, p.814–821, 2003.

DOI: 10.1016/S0924-0136(03)00335-2

[5] G. B. Schaffer, T. B. Sercombe, and R. N. Lumley, "Liquid phase sintering of aluminum alloys," Mater. Chem. Phys., vol. 67, no. 1–3, p.85–91, 2001.

DOI: 10.1016/S0254-0584(00)00424-7

[6] M. C. Oh and B. Ahn, "Effect of Mg composition on sintering behaviors and mechanical properties of Al-Cu-Mg alloy," Trans. Nonferrous Met. Soc. China (English Ed., vol. 24, no. SUPPL. 1, pp. s53–s58, 2014.

DOI: 10.1016/S1003-6326(14)63288-X

[7] G. A. W. Sweet et al., "Microstructural evolution of a forged 2XXX series aluminum powder metallurgy alloy," Mater. Charact., vol. 151, no. February, p.342–350, 2019.

DOI: 10.1016/j.matchar.2019.03.033

[8] K. R. Ravi, S. Manivannan, G. Phanikumar, B. S. Murty, and S. Sundarraj, "Influence of Mg on grain refinement of near eutectic Al-Si alloys," Metall. Mater. Trans. A Phys. Metall. Mater. Sci., vol. 42, no. 7, p.2028–2039, 2011.

DOI: 10.1007/s11661-010-0600-0

[9] B. Torres, M. Lieblich, J. Ibáñez, and A. García-Escorial, "Mechanical properties of some PM aluminide and silicide reinforced 2124 aluminium matrix composites," Scr. Mater., vol. 47, no. 1, p.45–49, 2002.

DOI: 10.1016/S1359-6462(02)00095-7

[10] Y. Sahin and S. Murphy, "The effect of fibre orientation of the dry sliding wear of borsic-reinforced 2014 aluminium alloy," J. Mater. Sci., vol. 31, no. 20, p.5399–5407, 1996.

DOI: 10.1007/BF01159309

[11] P. Ashwath, J. Joel, M. Anthony Xavior, and H. G. Prashantha Kumar, "Effect of SiC and Al2O3 particles addition to AA 2900 and AA 2024 MMC's synthesized through microwave sintering," Mater. Today Proc., vol. 5, no. 2, p.7329–7336, 2018.

DOI: 10.1016/j.matpr.2017.11.402

[12] T. Miyajima and Y. Iwai, "Effects of reinforcements on sliding wear behavior of aluminum matrix composites," Wear, vol. 255, no. 1–6, p.606–616, 2003.

DOI: 10.1016/S0043-1648(03)00066-8

[13] J. Satish and K. G. Satish, "Preparation of magnesium metal matrix composites by powder metallurgy process," IOP Conf. Ser. Mater. Sci. Eng., vol. 310, no. 1, 2018.

DOI: 10.1088/1757-899X/310/1/012130

[14] G. Rodríguez-Cabriales et al., "Synthesis and characterization of Al-Cu-Mg system reinforced with tungsten carbide through powder metallurgy," Mater. Today Commun., vol. 22, no. July, p.100758, 2020.

DOI: 10.1016/j.mtcomm.2019.100758

[15] N. Karthikeyan, B. Radha Krishnan, A. VembathuRajesh, and V. Vijayan, "Experimental analysis of Al-Cu-Si metal matrix composite by powder-metallurgy process," Mater. Today Proc., vol. 37, no. Part 2, p.2770–2774, 2020.

DOI: 10.1016/j.matpr.2020.08.643

[16] M. J. Styles, C. R. Hutchinson, Y. Chen, A. Deschamps, and T. J. Bastow, "The coexistence of two S (Al 2CuMg) phases in Al-Cu-Mg alloys," Acta Mater., vol. 60, no. 20, p.6940–6951, 2012.

DOI: 10.1016/j.actamat.2012.08.044

[17] R. N. Lumley, T. B. Sercombe, and G. B. Schaffer, "Surface oxide and the role of magnesium during the sintering of aluminum," Metall. Mater. Trans. A Phys. Metall. Mater. Sci., vol. 30, no. 2, p.457–463, 1999.

DOI: 10.1007/s11661-999-0335-y

[18] A. Sangghaleh and M. Halali, "Effect of magnesium addition on the wetting of alumina by aluminium," Appl. Surf. Sci., vol. 255, no. 19, p.8202–8206, 2009.

DOI: 10.1016/j.apsusc.2009.05.044

[19] J. C. Lee, J. P. Ahn, Z. Shi, J. H. Shim, and H. I. Lee, "Methodology to design the interfaces in SiC/Al composites," Metall. Mater. Trans. A Phys. Metall. Mater. Sci., vol. 32, no. 6, p.1541–1550, 2001.

DOI: 10.1007/s11661-001-0241-4

[20] C. Yuan et al., "Enhanced ductility by Mg addition in the CNT/Al-Cu composites via flake powder metallurgy," Mater. Today Commun., vol. 26, p.101854, 2021.

DOI: 10.1016/j.mtcomm.2020.101854

[21] T. Qiu, M. Wu, Z. Du, G. Chen, L. Zhang, and X. Qu, "Microstructure evolution and densification behaviour of powder metallurgy Al–Cu–Mg–Si alloy," Powder Metall., vol. 63, no. 1, p.54–63, 2020.

DOI: 10.1080/00325899.2020.1719688

[22] M. Rahimian, N. Parvin, and N. Ehsani, "Investigation of particle size and amount of alumina on microstructure and mechanical properties of Al matrix composite made by powder metallurgy," Mater. Sci. Eng. A, vol. 527, no. 4–5, p.1031–1038, 2010.

DOI: 10.1016/j.msea.2009.09.034

[23] R. M. German, "Powder Metallurgy Science," 1984.