Investigation of flexural and impact strength of carbon nanotube reinforced AA7075 metal matrix

  • Authors

    • Pothamsetty Kasi V Rao Koneru Lakshmaiah Education Foundation
    • B Raghu Kumar P V P Siddhartha Institute of Technology
    • B Sudheer Kumar Koneru Lakshmaiah Education Foundation
    • G Phanindra Swamy Koneru Lakshmaiah Education Foundation
    • Y Ganga Raju Koneru Lakshmaiah Education Foundation
    • P Sajjad Ali Khan Koneru Lakshmaiah Education Foundation
    2018-05-18
    https://doi.org/10.14419/ijet.v7i2.11295
  • Carbon Nanotubes, AA7075, Stir Casting, SEM, Impact Strength, Flexural Strength.

  • Abstract

    Metal matrix nano-composites are grabbing more attention by many researchers in the recent years as they exhibit outstanding properties when compared to pure metal alloys. In the present study Aluminium Alloy 7075 was selected as the matrix and carbon nanotubes was selected as reinforcing element to investigate the percentage enhancement of flexural strength and impact strength of metal matrix composite. Stir casting process was selected to fabricate the specimens. The multi walled carbon nanotubes with different weight percentages (0.5, 1.0, 2.0, 5.0 wt %) were selected to prepare the AA7075-CNT metal matrix composite.  Microstructure and dispersion of CNT was examined using Scanning Electron Microscope (SEM) with EDX. The experimental results of mechanical tests showed that if the MWCNTs particle content increases considerably flexural strength and impact strength also increases about 125% and 90% respectively. Thus the AA7075-CNT metal matrix can be used in automobile and aerospace applications under high load conditions.

  • References

    1. [1] S. Iijima, Helical microtubules of graphitic carbon, Nature 354 (1991) 56–58. https://doi.org/10.1038/354056a0.

      [2] E.T. Thostenson, Z. Ren, T.-W. Chou, Advances in the science and technology of carbon nanotubes and their composites: a review, Compos. Sci. Tech. 61 (2001) 1899–1912. https://doi.org/10.1016/S0266-3538(01)00094-X.

      [3] A.M.K. Esawi, Mahmoud M. Farag, Carbon nanotube reinforced composites: Potential and current challenges, Mater. Design. 28 (2007) 2394–2401. https://doi.org/10.1016/j.matdes.2006.09.022.

      [4] Md Zakir Hussain, Urfi Khan, A.K Chanda, Rituraj Jangid, Fabrication and hardness analysis of f-MWCNTs reinforced aluminium composite, Procedia Engineering 173 (2017) 1611 – 1618. https://doi.org/10.1016/j.proeng.2016.12.262.

      [5] Tao Peng, Isaac Chang, Uniformly dispersion of carbon nanotube in aluminum powders by wet shake-mixing approach, Powder Technology 284 (2015) 32–39. https://doi.org/10.1016/j.powtec.2015.06.039.

      [6] Jinzhi Liao, Ming-Jen Tan, Mixing of carbon nanotubes (CNTs) and aluminum powder for powder metallurgy use, Powder Technology 208 (2011) 42–48. https://doi.org/10.1016/j.powtec.2010.12.001.

      [7] Christopher R. Bradbury, Jaana-Kateriina Gomon , Lauri Kollo , Hansang Kwon, Marc Leparoux, Hardness of Multi Wall Carbon Nanotubes reinforced aluminium matrix composites, Journal of Alloys and Compounds 585 (2014) 362–367. https://doi.org/10.1016/j.jallcom.2013.09.142.

      [8] Z.Y. Liu, B.L. Xiao, W.G. Wang, Z.Y. Ma, Singly dispersed carbon nanotube/aluminum composites fabricated by powder metallurgy combined with friction stir processing, Carbon 50 (2012) 1843–1852. https://doi.org/10.1016/j.carbon.2011.12.034.

      [9] M. Jafari, M.H. Abbasi, M.H. Enayati, F. Karimzadeh, Mechanical properties of nanostructured Al2024–MWCNT composite prepared by optimized mechanical milling and hot pressing methods, Advanced Powder Technology 23 (2012) 205–210. https://doi.org/10.1016/j.apt.2011.02.008.

      [10] Muhammad Mansoor, Muhammad Shahid, Carbon nanotube-reinforced aluminum composite produced by induction melting, Journal of Applied Research and Technology 14 (2016) 215–224. https://doi.org/10.1016/j.jart.2016.05.002.

      [11] H.R. Aniruddha Rama, Praveennath. G. Koppad, K.T.Kashyap, Nanoindentation studies on MWCNT/aluminum alloy 6061 nanocomposites, Materials Science & Engineering A 559 (2013) 920–923. https://doi.org/10.1016/j.msea.2012.08.143.

      [12] Xiaoqing Liu, Caiju Lia, Jürgen Eckert, Konda Gokuldoss Prashanth, Oliver Renk, Long Teng, Yichun Liua, Rui Bao, Jingmei Tao, Tao Shena, Jianhong Yi, Microstructure evolution and mechanical properties of carbon nanotubes reinforced Al matrix composites, Materials Characterization 133 (2017) 122–132. https://doi.org/10.1016/j.matchar.2017.09.036.

      [13] Qiang Liu, Liming Ke, Fencheng Liu, Chunping Huang, Li Xing, Microstructure and mechanical property of multi-walled carbon nanotubes reinforced aluminum matrix composites fabricated by friction stir processing, Materials and Design 45 (2013) 343–348. https://doi.org/10.1016/j.matdes.2012.08.036.

      [14] F. Rikhtegar, S.G. Shabestari, H. Saghafian, Microstructural evaluation and mechanical properties of Al-CNT nanocomposites produced by different processing methods, Journal of Alloys and Compounds 723 (2017) 633-641. https://doi.org/10.1016/j.jallcom.2017.06.222.

      [15] Baisong Guo, Min Song, Jianhong Yi, Song Ni, Tao Shen, Yong Du, Improving the mechanical properties of carbon nanotubes reinforced pure aluminum matrix composites by achieving non-equilibrium interface, Materials and Design 120 (2017) 56–65. https://doi.org/10.1016/j.matdes.2017.01.096.

      [16] SE Shi, HJ Choi, DH Bae (2012), Electrical and thermal conductivities of aluminum-based composites containing multi-walled carbon nanotubes, Journal of Composite Materials 47(18) 2249–2256.

      [17] A.H. Javadi, Sh. Mirdamadi, M.A. Faghihisani, S. Shakhesi, R.Soltani, Fabrication of well-dispersed, multiwalled carbon nanotubes-reinforced aluminum matrix composites, New Carbon Materials, 2012, 27(3):161–165. https://doi.org/10.1016/S1872-5805(12)60010-9.

      [18] Julien Stein, Blanka Lenczowski, Eric Anglaret, Nicole Fre´ty, Influence of the concentration and nature of carbon nanotubes on the mechanical properties of AA5083 aluminium alloy matrix composites, Carbon 77 (2014) 44 –52. https://doi.org/10.1016/j.carbon.2014.05.001.

  • Downloads

  • How to Cite

    Kasi V Rao, P., Raghu Kumar, B., Sudheer Kumar, B., Phanindra Swamy, G., Ganga Raju, Y., & Sajjad Ali Khan, P. (2018). Investigation of flexural and impact strength of carbon nanotube reinforced AA7075 metal matrix. International Journal of Engineering & Technology, 7(2), 764-767. https://doi.org/10.14419/ijet.v7i2.11295

    Received date: 2018-04-12

    Accepted date: 2018-05-10

    Published date: 2018-05-18