EFFECT OF MAGNESIUM SURFACTANT ON WETTABILITY OF CARBON NANOTUBE IN A356 ALLOY COMPOSITE

H. Hanizam, M.S. Salleh, M.Z. Omar, A.B. Sulong, S.H. Yahaya, N. Siswanto

Abstract


MWCNT-A356 alloy composite is a promising material for automotive applications owing to its excellent casting fluidity, good mechanical properties, high corrosion resistance and low density. However, wettability problem between the reinforced particles and alloy matrix is the major concerns. Poor wetting also caused inhomogeneity dispersion of the particles in the matrix. The present study investigated the effects of additional pure magnesium surfactant into the liquid state processing method on the mechanical properties of the composite. A thixoforming and short T6 heat treatment have also been applied to the composite. The composites were characterized using optical microscopy, field emission secondary electron microscopy and mechanical testing. As results, the weight fraction of 0.5 wt% of Mg, added into the 0.5 wt% MWCNT-A356 alloy composite improves the hardness, yield strength, and ultimate tensile strength by 1.4%, 9.2% and 4.0%, respectively. Some agglomeration of MWCNT was also detected in the 1.0 wt% MWCNT-A356 alloy composite. Evidences of bridging and pull-out structures of MWCNT were clearly observed indicating good wettability and load transfer strengthening mechanism. The results prove that the additional of small weight fraction of magnesium into the alloy matrix has positive impact to the mechanical strength of the composite.

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References


R. Arrabal, B. Mingo, A. Pardo, M. Mohedano, E. Matykina, and I. Rodríguez, “Pitting corrosion of rheocast A356 aluminium alloy in 3.5 wt.% NaCl solution,” Corrosion Science, vol. 73, pp. 342–355, 2013.

A. M. K. Esawi, K. Morsi, A. Sayed, M. Taher, and S. Lanka, “Effect of carbon nanotube (CNT) content on the mechanical properties of CNT-reinforced aluminium composites,” Composites Science and Technology, vol. 70, no. 16, pp. 2237–2241, 2010.

H. H. Kim, J. S. S. Babu, and C. G. Kang, “Fabrication of A356 aluminum alloy matrix composite with CNTs/Al2O3 hybrid reinforcements,” Materials Science and Engineering A, vol. 573, pp. 92–99, 2013.

M. Shayan and B. Niroumand, “Synthesis of A356-MWCNT nanocomposites through a novel two stage casting process,” Materials Science and Engineering A, vol. 582, pp. 262–269, 2013.

B. Fang, M. Springborg, N. Zhao, C. Shi, C. He, J. Li and E. Liu “Interfacial chemical bonding between carbon nanotube and aluminum substrate modulated by alloying elements,” Diamond and Related Materials, vol. 59, pp. 1–6, 2015.

C. Guignier, M. Bueno, B. Camillieri, and B. Durand, “Applied Surface Science Influence of composite processing on the properties of CNT grown on carbon surfaces,” Applied Surface Science vol. 428, pp. 835–843, 2018.

J. Hashim, L. Looney and M.S.J. Hashimi, “The wettability of SiC particle by molten aluminium alloy,” Journal of Materials Processing Technology, vol. 199, no. 1–3, pp. 324–328, 2001.

K. Landry, S. Kalogeropoulou, and N. Eustathopoulos, “Wettability of carbon by aluminum and aluminum alloys,” Materials Science and Engineering: A, vol. 254, no. 1–2, pp. 99–111, 1998.

N.A. Bunakov, D.V. Kozlov, V.N. Golovanov, E.S. Klimov, E.E. Grebchuk, M.S. Efimov, and B.B. Kostishko, “Fabrication of multi-walled carbon nanotubes-aluminum matrix composite by powder metallurgy technique,” Results in Physics, vol. 6, pp. 231–232, 2016.

H. Hanizam, M.S. Salleh, M.Z. Omar and A.B. Sulong “Effects of mechanical stirring and short heat treatment on thixoformed carbon nanotube aluminium alloy composite,” Journal of Alloys and Compounds, vol. 788, pp. 83-90, 2019.

M.S. Salleh, M.Z. Omar, J. Syarif, K.S. Alhawari and M.N. Mohammed, “Microstructure and Mechanical Properties of Thixoformed A319 Aluminium Alloy,” Materials and Design, vol. 64, pp. 142-152, 2014.

Y. Birol, “Cooling slope casting and thixoforming of hypereutectic A390 alloy,” Journal of Materials Processing Technology, vol. 207, no. 1–3, pp. 200–203, 2008.

S. Menargues, E. Martín, M.T. Baile, and J.A. Picas, “New short T6 heat treatments for aluminium silicon alloys obtained by semisolid forming,” Materials Science and Engineering: A, vol. 621, pp. 236–242, 2015.

A.D. Moghadam, E. Omrani, P.L. Menezes, and P.K. Rohatgi, “Mechanical and tribological properties of self-lubricating metal matrix nanocomposites reinforced by carbon nanotubes ( CNTs ) and grapheme - A review,” Composites Part B: Engineering, vol. 77, pp. 402–420, 2015.

J. Hashim, L. Looney, and M. S. J. Hashmi, “Metal matrix composites: production by the stir casting method,” Journal of Materials Processing Technology, vol. 92, pp. 1–7, 1999.

A. B. Elshalakany, T. A. Osman, A. Khattab, B. Azzam, and M. Zaki, “Microstructure and mechanical properties of MWCNTs reinforced A356 aluminum alloys cast nanocomposites fabricated by using a combination of rheocasting and squeeze casting techniques,” Journal of Nanomaterials, vol. 2014, pp. 1-14, 2014.

R.M. Rashad, O.M. Awadallah, and S. Wifi, “Effect of MWCNTs content on the characteristics of A356 nanocomposite,” Journal of Achievements in Materials and Manufacturing Engineering, vol. 58, no. 2, pp. 74–80, 2013.

K.P. So, J.C. Jeong, J.G. Park, H.K. Park, Y.H. Choi, D.H. Noh, D.H. Keum, H.Y. Jeong, C. Biswas, C.H. Hong and Y.H. Lee. “SiC formation on carbon nanotube surface for improving wettability with aluminum,” Composites Science and Technology, vol. 74, pp. 6–13, 2013.

W. Zhou, G. Yamamoto, Y. Fan, H. Kwon, T. Hashida, and A. Kawasaki, “In-situ characterization of interfacial shear strength in multi-walled carbon nanotube reinforced aluminum matrix composites,” Carbon, vol. 106, pp. 37-47, 2016.

M.H. Bocanegra-Bernal, J. Echeberria, J. Ollo, A. Garcia-Reyes, C. Dominguez-Rios, A. Reyes-Rojas, and A. Aguilar-Elguezabal, “A comparison of the effects of multi-wall and single-wall carbon nanotube additions on the properties of zirconia toughened alumina composites,” Carbon, vol. 49, no. 5, pp. 1599–1607, 2011.

F. Rikhtegar, S.G. Shabestari, and H. Saghafian, “Microstructural evaluation and mechanical properties of Al-CNT nanocomposites produced by different processing methods,” Journal of Alloys and Compounds, vol. 723, pp. 633–641, 2017.

B. Chen, J. Shen, X. Ye, H. Imai, J. Umeda, M. Takahashi, and K. Kondoh, “Solid-state interfacial reaction and load transfer efficiency in carbon nanotubes (CNTs)-reinforced aluminum matrix composites,” Carbon, vol. 114, pp. 198–208, 2017.

J. G. Park, D. H. Keum, and Y. H. Lee, “Strengthening mechanisms in carbon nanotube-reinforced aluminum composites,” Carbon, vol. 95, pp. 690–698, 2015.

P. Suhas, N.L. Vaishak and J.D. Quadros, “Dry sliding wear behavior of aa 7075 reinforced short coated carbon metal matrix composites,” Journal of Advanced Manufacturing Technology, vol. 14, no. 2, pp. 115-128, 2017.

Q. Liu, L. Ke, F. Liu, C. Huang, and L. Xing, “Microstructure and Mechanical Property of Multi-walled Carbon Nanotubes Reinforced Aluminum Matrix Composites Fabricated by Friction Stir Processing,” Materials and Design, vol. 45, pp. 343-348, 2012.

S. Dong, J. Zhou, D. Hui, Y. Wang, and S. Zhang, “Size dependent strengthening mechanisms in carbon nanotube reinforced metal matrix composites,” Composites Part A: Applied Science and Manufacturing, vol. 68, pp. 356–364, 2015.

Q. Li, C. A. Rottmair, and R. F. Singer, “CNT reinforced light metal composites produced by melt stirring and by high pressure die casting,” Composites Science and Technology, vol. 70, no. 16, pp. 2242–2247, 2010.

S. Chayong, H.V. Atkinson, and P. Kapranos, “Thixoforming 7075 aluminium alloys,” Materials Science and Engineering: A, vol. 390, no. 1–2, pp. 3–12, 2005.




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