The Wear Behavior of WC-Co and WC-FeAl-B Composites at Temperatures of Ambient and 300 ̊C

Authors

Department of Materials Engineering, Isfahan University of Technology, Isfahan, Iran

Abstract

In this research, the wear behavior of commercial grades of WC-10wt%Co (H10F), WC-40vol%Co and WC-40vol%FeAl-B composites with different amounts of boron from zero to 1000 ppm has been investigated by the pin on disk test  method at high temperature. The wear tests were done under load of 40 N, a distance of 100 m and at ambient temperature, 200 ̊C and 300 ̊C. Wear surfaces were examined by scanning electron microscopy. The results showed that the wear resistance of all composites decreased with increasing temperature. The boron free WC-40vol%FeAl composite showed the lowest wear resistance at all ranges of temperature. In the presence of boron up to 500 ppm in iron-aluminide matrix, the high temperature wear resistance of these composites improves and the wear mechanisms changes from particle pullout into abrasive state. The toughness enhancement of these composites and plasticity enhancement of iron aluminide in the presence of boron, leads to better link of the interface of FeAl matrix and tungsten carbide particles, and thus increases the wear resistance of these composites. WC-40vol% FeAl-500ppmB composite has a higher wear resistance at high temperature than WC-40vol% Co and commercial WC-10wt% Co.
 

Keywords

References

1. Semenov, A. P., “Tribology at High Temperature”, Tribology International, Vol. 28, pp. 45-50, 1995.
2. Ahmadian, M., Wexler, D., Calka, A., and Chandra, T., “The Effect of Boron on the Hardness and Fracture Toughness of WC-FeAl-B and WC-Ni3Al-B Composites”, Materials Science Forum, Vol. 539, pp. 962-967, 2007.
3. Jianxin, D., Hui, Z., Ze, W., Yansong, L., and Jun, Z., “Friction and Wear Behaviors of WC/Co Cemented Carbide Tool Materials with Different WC Grain Sizes at Tempratures up to 600°C”, International Journal of Refractory Metals and Hard Materials, Vol. 31, pp. 196-204, 2012.
4. Subramanian, R., and Schneibel, J. H., “Intermetallic Bonded WC-Based Cermets by Pressureless Melt Infiltration”, Intermetallics, Vol. 5, pp. 401-408, 1997.
5. Grabke, H. J., “Oxidation of NiAl and FeAl”, Intermetallics, Vol. 7, pp. 1153-1158, 1999.
6. Mosbah, A., Wexler, D., and Calka, A., “Tungsten Carbide Iron Aluminide Hardmetals: Nanocrystalline vs Microcrystalline”, Materials Science Forum, Vol. 360-362, pp. 649-654, 2001.
7. Mosbah, A., and Wexler, D., “Abrasive Wear of WC-FeAl Composites”, Wear, Vol. 258, pp. 1337-1341, 2005.
8. Johnson, D. F., and Carter, E. A., “First-Principles Assessment of Hydrogen Absorption into FeAl and Fe3Si: Towards Prevention of Steel Embrittlement”, Acta Materialia, Vol. 58, pp. 638-648, 2010.
9. Ahmadian, M., Wexler, D., Calka, A., and Chandra, T., “Liquid Phase Sintering of WC-FeAl and WC-Ni3Al Composites with and without Boron”, Materials Science Forum, Vol. 423-426, pp. 1951-1956, 2003.
10. Ahmadian, M., Wexler, D., Chandra, T., and Calka, A., “Abrasive Wear of WC-FeAl-B and WC-Ni3Al-B Composites”, International Journal of Refractory Metals & Hard Materials, Vol. 23, pp. 155-159, 2005.
11. Ahmadian, M., and Wexler, D., “Liquid Phase Sintering of sub Micron WC Composites Containing new Binders Based on Boron Doped Aluminides”, International Conference on Ultrafine Grained and Nanostructured Materials, University of Tehran 2007.
12. Ahmadian, M., “Sintering, Microstructure and Properties of WC-FeAl-B and WC-Ni3Al-B”, Ph.D. Thesis, Materials and Mechatronic Engineering, University of Wollongong, 2005.
13. Sanchez, E., Bannier, E., Salvador, M. D., Bonache, V., Garcia, J. C., Morgiel, J., and Grzonka, J., “Microstructure and Wear Behavior of Conventional and Nanostructured Plasma-Sprayed WC-Co Coating”, Journal of Thermal Spray Technology, Vol. 19, pp. 964-974, 2010.
14. Fischer, T. E., and Jia, K., “Abrasion Resistance of Nanostructured and Conventional Cemented Carbides”, Wear, Vol. 200, pp. 206-214, 1996.
15. Hutchings, I. M., Tribology: Friction and Wear of Engineering Materials, 1st ed, Cambridge, London 1992.
Journal of Advanced Materials in Engineering (Esteghlal)
Volume 36, Issue 1
June 2017
Pages 1-12

Files

Share

How to cite

Statistics

تحت نظارت وف ایرانی