Study of Microstructure and Wear Behavior of in-situ Al/Al3Ti Composite Coating on Commercial Pure Al Produced by Aluminum Cored Wires

Document Type : Original Articles

Authors

• afsaneh ansari
• amir hossein kokabi
• hamid reza madaah hosseini

Sharif University of Technology

10.22067/ma.v27i2.29225

Abstract

In this study, GTAW process and cored wires were used to coat Al/Al3Ti wear resistant composite on a commercial pure Al substrate. Wire drawing process was utilized to produce the cored wires from aluminum strips and a mixture of titanium and aluminum powders. The microstructures and the present phases were investigated by metallographic, SEM equipped with EDS and XRD analysis. Moreover, the hardness and wear resistance of the samples were evaluated. A maximum microhardness value of about 300HV was measured which is 13 times higher than the hardness of the substrate material. The results showed that the coating was composed of Al, Ti as well as Al3Ti. The presence of Al3Ti led to increase in the wear resistance of the coating.

Keywords

• Composite Coating
• Wear Resistance
• GTAW
• Cored Wire

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References

1. Shrestha, S., Dunn, B.D., and Dong, H., (Ed.), "Surface Engineering of Light Alloys: Aluminium, Magnesium and Titanium Alloys", Woodhead Publishing Limited, pp. 40-57,(2010).

2. Xu, J., Liu, W., Kan, Y., Zhong, M., "Microstructure and Wear Properties of Laser Cladding Ti–Al–Fe–B Coatings on AA2024 Aluminum Alloy", Materials and Design, vol. 27, pp. 405–410, (2006).

3. Yang, R., Liu, Z., Yang, G., Wang, Y., "Study of In-situ Synthesis TiCp/Ti Composite Coating on Alloy Ti6Al4 V", TIG Cladding, vol. 36, pp. 349 – 354, (2012).

4. Monfared, A., Kokabi, A.H., Asgari, S., "Microstructural Studies and Wear Assessments of Ti/TiC Surface Composite Coatings on Commercial pure Ti Produced by Titanium Cored Wires and TIG Process", Materials Chemistry and Physics, vol. 137, pp. 959-966, (2013).

5. Smith, A., "Discontinuous Reinforcements for Metal-Matrix Composites", handbook, Composites, ASM, vol. 21, pp.51, (1990).

6. Nofar, M., Madaah Hosseini, H.R., Kolagar-Daroonkolaie, N., "Fabrication of High Wear Resistant Al/Al3Ti Metal Matrix Composite by in Situ Hot Press Method", Materials and Design., vol. 30, pp.280–286, (2009).

7. Abbasi Chianeha, V., Madaah Hosseini, H.R., Nofar, M., "Micro Structural Features and Mechanical Properties of Al–Al3Ti Composite Fabricated by in-Situ Powder Metallurgy Route", Journal of Alloys and Compounds, vol. 473, pp.127–132, (2009).

8. Niu, L.B., Zhang, J.M., YANG, X.l., "In-Situ Synthesis of Al3Ti Particles Reinforced Al-based Composite Coating", Transactions of Nonferrous Metals Society of China, vol. 22, pp.1387−1392, (2012).

9. Uenishi K., Kobayashi K. F. "Formation of Surface Layer Based on Al3Ti on Aluminum by Laser Cladding and its Compatibility with Ceramics", Intermetallics, vol.7, pp. 553-559, (1999).