Effects of milling time on sintering properties and formation of interface Al4C3 on graphite reinforced Al-4.5Cu-1.5Mg nanocomposite

Authors

  • Angga Khairul Fahmi Advance Materials Laboratory, Departement of Mechanical Engineering, Gunadarma Univesity, Jl. Margonda Raya No. 100, Depok, West Java, 16424, Indonesia
  • Haris Rudianto Research Center for Physics, National Research and Innovation Agency, Setu, South Tangerang, Banten, 15314, Indonesia
  • Agus Sukarto Wismogroho Research Center for Physics, National Research and Innovation Agency, Setu, South Tangerang, Banten, 15314, Indonesia
  • Wahyu Bambang Widayatno Research Center for Physics, National Research and Innovation Agency, Setu, South Tangerang, Banten, 15314, Indonesia
  • Didik Aryanto Research Center for Physics, National Research and Innovation Agency, Setu, South Tangerang, Banten, 15314, Indonesia
  • Bambang Hermanto Research Center for Physics, National Research and Innovation Agency, Setu, South Tangerang, Banten, 15314, Indonesia

DOI:

https://doi.org/10.55713/jmmm.v32i1.1132

Keywords:

Alumunium, Graphite, Nanocomposite, Shaker Mill, , Sintering

Abstract

Aluminum-based metal matrix nanocomposites have been extensively researched and developed for aerospace and automotive applications. Al-4.5Cu-1.5Mg with 0.5 wt% graphite were milled for 2 h, 4 h, 6 h, and 8 h using shaker mill under argon gas. The phenomena of deformation, fracturing, and cold welding during shaker mill were investigated to observe how the shaker mill effects on their morphology and formation of intermetallic phases due to its very high speed. Sintering under ultra-high purity argon gas for 99.9999% was done to produce high density materials. Intermetallic phase Al4C3 was found as a result reaction between aluminum and graphite during milling. Formation of Al4C3 is very important to the alloy as an interface between matrix and reinforcement particle in order to have higher hardness.  A decrease in Peaks Cu and followed by an increase in Al2Cu precipitation in the XRD pattern occurred with increasing milling time. The role of Al2Cu precipitation is very important in improving mechanical properties, resulting in the highest hardness value reaching 97 HV and a density value of 83% at 8 h of milling.

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References

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Published

2022-03-29

How to Cite

[1]
A. K. . Fahmi, H. Rudianto, A. S. . Wismogroho, W. B. . Widayatno, D. . Aryanto, and B. . Hermanto, “Effects of milling time on sintering properties and formation of interface Al4C3 on graphite reinforced Al-4.5Cu-1.5Mg nanocomposite”, J Met Mater Miner, vol. 32, no. 1, pp. 65–71, Mar. 2022.

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Original Research Articles