Microstructures and Tensile Characteristics on Direct Recycled Aluminium Chips AA6061/Al Powder by Hot Pressing Method


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This research aims to investigate the effect on tensile strength of the recycled chip AA6061 aluminium alloy metal by using powder metallurgy method. Material used is recycled aluminium Chip AA6061 and Al powder. The recycled AA6061 chips mixed together with various compositions of Al powder content were fabricated to form a specimen by hot compaction technique. The compaction using hot pressed at 30 tons with holding time of 60 minutes. The final product was analyzed by tensile test shown the specimen A5 have higher ultimate tensile strength (UTS) 156.404 MPa and yield strength (YS) at 107.399 MPa. Scanning Electron Microscopy (SEM) was conducted to observe the microstructure of fracture surface existing on the tensile specimens.



Edited by:

Mohd Hamdi Bin Abd Shukor, Omar S. Es-Said and J.H. Chang




S. Kuddus et al., "Microstructures and Tensile Characteristics on Direct Recycled Aluminium Chips AA6061/Al Powder by Hot Pressing Method", Materials Science Forum, Vol. 909, pp. 9-14, 2017

Online since:

November 2017




* - Corresponding Author

[1] Lazzaro G, Atzori C (1991) Recycling of aluminum trimmings by conform process. Minerals, Metals & Materials SOC(TMS), Warrendale, PA, (USA), p.1379–1384.

[2] Yusuf, N. K., Lajis, M. A., Daud, M. I., & Noh, M. Z. (2013).

[3] Gronostajski, J., & Matuszak, A. (1999). The recycling of metals by plastic deformation: an example of recycling of aluminium and its alloys chips. Journal of Materials Processing Technology, 92, 35-41.

DOI: https://doi.org/10.1016/s0924-0136(99)00166-1

[4] Muñoz, M.A. Monge, B. Savoini, M.E. Rabanal, G. Garces, R. Pareja La2O3-reinforced W and W-V alloys produced by hot isostatic pressing J. Nucl. Mater., 417 (2011), p.508–511.

DOI: https://doi.org/10.1016/j.jnucmat.2011.01.077

[5] S. S. Khamis, M. A. Lajis, and R. A. O. Albert, 12th Global Conference on Sustainable Manufacturing A Sustainable Direct Recycling of Aluminum Chip ( AA6061 ) in Hot Press Forging Employing Response Surface Methodology, vol. 26, p.477–481, (2015).

DOI: https://doi.org/10.1016/j.procir.2014.07.023

[6] Narayan, S., & Rajeshkannan, A. (2017). Hardness, tensile and impact behaviour of hot forged aluminium metal matrix composites. Journal of Materials Research and Technology.

DOI: https://doi.org/10.1016/j.jmrt.2016.09.006

[7] Dannininger H, Gierl C, Salak A. (2009). Relationship between apparent hardness and tensile strength in P/M iron and steels sintered at standard temperatures. Powder Metall Prog; 9: 1–13.

[8] A. American and N. Standard, Standard Test Methods for Tension Testing of Metallic Materials [ Metric ] 1, vol. i, (2004).

[9] Shamsudin, S., Zhong, Z. W., Rahim, S. N. A., & Lajis, M. A. (2016). The influence of temperature and preheating time in extrudate quality of solid-state recycled aluminum. The International Journal of Advanced Manufacturing Technology.

[10] Pepelnjak, T., Kuzman, K., Kačmarčik, I., & Plančak, M. (2012). RECYCLING OF AIMgSi1 ALUMINIUM CHIPS BY COLD COMPRESSION. Metalurgija, 51(4), 509-512.

[11] Irfan, M., Kadir, A., Mustapa, M. S., & Siswanto, W. A. (2017). Microstructural and Physical Characteristics of Recycling Aluminium Chips AA6061 / Al Powder Using Powder Metallurgy, 8(6), 2619–2625.

DOI: https://doi.org/10.21817/ijet/2016/v8i6/160806218

[12] S. Shamsudin, M. A. Lajis, and Z. W. Zhong, Solid-state recycling of light metals : A review, vol. 8, no. 8, p.1–23, (2016).

[13] C. Chen, L. Guo, J. Luo, J. Hao, Z. Guo, and A. A. Volinsky, Materials Science & Engineering A Aluminum powder size and microstructure effects on properties of boron nitride reinforced aluminum matrix composites fabricated by semi-solid powder metallurgy, vol. 646, p.306–314, (2015).

DOI: https://doi.org/10.1016/j.msea.2015.08.081

[14] J. B. Fogagnolo, M. A. Simón, and M. A. Martinez, Recycling of aluminium alloy and aluminium matrix composite chips by pressing and hot extrusion, vol. 144, p.792–795, (2003).

DOI: https://doi.org/10.1016/s0924-0136(03)00380-7