Journal of Advanced Materials and Technologies

Journal of Advanced Materials and Technologies

The Effect of the Number of Passes on the Microstructure and Mechanical Properties of Ti/CNTs Surface Nanocomposite Produced by the Friction Stir Processing (FSP)

Document Type : Original Reaearch Article

Authors
Mojtaba Hakakzade 1
Hamid Reza Jafarian 2
Ali Reza Eivani 2
Seyed Hossein Seyedein 2
1 MSc Student School of Metallurgy & Materials Engineering, Iran University of Science and Technology, Tehran, Iran.
2 Associate Professor, School of Metallurgy & Materials Engineering, Iran University of Science and Technology, Tehran, Iran.
10.30501/jamt.2025.486560.1311
Abstract
In this research, Carbon Nanotubes (CNTs) were incorporated into pure titanium to create a surface nanocomposite using Friction Stir Processing (FSP) method. Initially, through various experiments, the desired linear and rotational speeds were established (ω=300 rpm, v=180 mm/min). Subsequently, different process passes were conducted on pure titanium and the surface composite, which was fabricated using a fixed volume percentage of 3.8% carbon nanotubes. The effect of this variable on the mechanical properties and microstructure of both pure titanium and the surface composite was then investigated. The results showed that the optimal ultimate tensile strength and hardness for the surface composite were achieved in the second pass, with values increasing to 512 MPa and 265 Hv, respectively. In contrast, the ultimate tensile strength and hardness of pure titanium were measured at 390 MPa and 45 Hv, respectively. The findings indicated that friction stir processing did not have a noticeable effect on the mechanical properties of pure titanium.
Keywords
Friction Stir Welding Process
Carbon Nanotube
Twinning
Surface Nano-composite
Mechanical Properties

Subjects

  1. Arora, H. S., Singh, H., & Dhindaw, B. K. (2012). Composite fabrication using friction stir processing—a review. The International Journal of Advanced Manufacturing Technology, 61(9-12), 1043–55.                https://doi.org/10.1007/s00170-011-3758-8
  2. Bakshi, S. R., & Agarwal, A. (2011). An analysis of the factors affecting strengthening in carbon nanotube reinforced aluminum composites. Carbon, 49(2), 533–544. https://doi.org/10.1016/j.carbon.2010.09.054
  3. Fujii, H., Sun, Y., Kato, H., & Nakata, K. (2010). Investigation of welding parameter dependent microstructure and mechanical properties in friction stir welded pure Ti joints. Acta Materialia, 527(15), 3386–3391. https://doi.org/10.1016/j.msea.2010.02.023
  4. Hosseini, S., Ranjbar, K., Dehmolaei, R., & Amirani, A. (2015). Fabrication of Al5083 surface composites reinforced by CNTs and cerium oxide nano particles via friction stir processing. Journal of Alloys and Compounds, 622, 725–733. https://doi.org/10.1016/j.jallcom.2014.10.158
  5. Kalidindi, S. R., Salem, A. A., & Doherty, R. D. (2003). Role of Deformation Twinning on Strain Hardening in Cubic and Hexagonal Polycrystalline Metals. Advanced Engineering Materials, 5(4), 229–232. https://doi.org/10.1002/adem.200300320
  6. Karthikeyan, L., Senthilkumar, V. S., Balasubramanian, V., & Natarajan, S. (2009). Mechanical property and microstructural changes during friction stir processing of cast aluminum 2285 alloy. Materials & Design, 30(6), 2237–2242. https://doi.org/10.1016/j.matdes.2008.09.006
  7. Kumar, K. S., & Kailas, S. V. (2008). The role of friction stir welding tool on material flow and weld formation. Acta Materialia, 485(1-2), 367–374. https://doi.org/10.1016/j.msea.2007.08.013
  8. Kwon, Y. J., Saito, N., & Shigematsu, I. (2002). Friction stir process as a new manufacturing technique of ultrafine grained aluminum alloy. Journal of Materials Science Letters, 21(19), 1473–1476. https://doi.org/10.1023/a:1020067609451
  9. Lee, W., Lee, C. Y., Chang, W. S., Yeon, Y. M., & Jung, S. (2005). Microstructural investigation of friction stir welded pure titanium. Materials Letters, 59(26), 3315–3318. https://doi.org/10.1016/j.matlet.2005.05.064
  10. Liu, Q., Ke, L., Liu, F., Huang, C., & Xing, L. (2013). Microstructure and mechanical property of multi-walled carbon nanotubes reinforced aluminum matrix composites fabricated by friction stir processing. Materials & Design, 45, 343–348. https://doi.org/10.1016/j.matdes.2012.08.036
  11. Liu, Z. Y., Xiao, B. L., Wang, W. G., & Ma, Z. Y. (2014). Analysis of carbon nanotube shortening and composite strengthening in carbon nanotube/aluminum composites fabricated by multi-pass friction stir processing. Carbon, 69, 264– https://doi.org/10.1016/j.carbon.2013.12.025
  12. Ma, Z. Y., Sharma, S. R., Mishra, R. S., & Mahoney, M. W. (2003). Microstructural Modification of Cast Aluminum Alloys via Friction Stir Processing. In Materials Science Forum (Vol. 426, No. 4, pp. 2891–2896). https://doi.org/10.4028/www.scientific.net/msf.426-432.2891
  13. Mishra, R. S., & Ma, Z. Y. (2005). Friction stir welding and processing. Materials Science and Engineering: R: Reports, 50(1-2), 1–78. https://doi.org/10.1016/j.mser.2005.07.001
  14. Morisada, Y., Fujii, H., Nagaoka, T., & Fukusumi, M. (2006). MWCNTs/AZ31 surface composites fabricated by friction stir processing. Materials & Design, 419(1-2), 344–348. https://doi.org/10.1016/j.msea.2006.01.016
  15. Rios, P. R., & da Fonseca, G. S. (2010). Grain Boundary Pinning by Particles. Materials Science Forum (Vol. 638, pp. 3907–3912). https://doi.org/10.4028/www.scientific.net/msf.638-642.3907
  16. Salem, A. A., Kalidindi, S. R., & Semiatin, S. L. (2005). Strain hardening due to deformation twinning in α-titanium: Constitutive relations and crystal-plasticity modeling. Acta Materialia, 53(12), 3495–3502. https://doi.org/10.1016/j.actamat.2005.04.014
  17. Zhang, Y., Sato, Y. S., Hiroyuki Kokawa, Seung, & Hirano, S. (2008). Stir zone microstructure of commercial purity titanium friction stir welded using pcBN tool. Materials Science and Engineering. A, Structural Materials: Proporties, Microstructures and Processing, 488(1-2), 25–30.        https://doi.org/10.1016/j.msea.2007.10.062
Journal of Advanced Materials and Technologies
Volume 13, Issue 4
Winter 2025
Pages 15-26

  • Receive Date 03 November 2024
  • Revise Date 05 January 2025
  • Accept Date 05 March 2025