Advertisement

Journal of Materials Science

, Volume 42, Issue 12, pp 4659–4666 | Cite as

Microstructure, strength and tribological behavior of Fe–C–Cu–Ni sintered steels prepared with MoS2 addition

  • S. Dhanasekaran
  • R. GnanamoorthyEmail author
Article

Abstract

Powder metal processing permits development of new composites with specific properties required for demanding applications. Complex shaped machine elements like gears and bearings are made of powder metallurgy technique economically. In many applications these machine elements operate under unlubricated conditions and there is a need for materials with good friction and wear characteristics, strength and modulus. In the present study, Fe–C–Cu–Ni alloys with solid lubricant, MoS2, were developed using a simple single stage compaction and sintering. The microstructure, strength, hardness and tribo behavior of the composites were evaluated. The friction and wear characteristics were evaluated using pin-on-disc type tribo test machine. Addition of solid lubricant improved the compressibility and thereby the density of the compacts. Presence of the secondary sulphide phases in the as-sintered compacts improves the hardness and strength. The coefficient of friction and wear loss decreased with addition of MoS2. A simple wear model is proposed to predict the wear loss in these composites. The model predicts wear loss values that are in agreement with the experimental data.

Keywords

Wear Resistance Wear Rate MoS2 Wear Surface Base Composition 

Notes

Acknowledgements

Authors acknowledge the discussions and various support provided by Prof Y Mutoh, Nagaoka University of Technology, Japan and Prof N Masahashi of Tohoku University Japan.

References

  1. 1.
    Rapport L, Leshchinsky V, Lvovsky M, Lapsker I,Volovik YU, Tenne R (2002) Tribology Int 35:47CrossRefGoogle Scholar
  2. 2.
    Danninger H (1993) Powder Metal Sci Tech 4:22Google Scholar
  3. 3.
    Rapoport L, Leshchinsky V, Lvovsky M, Nepomnyashchy O,Volovik YU, Tenne R (2002) Wear 252:518CrossRefGoogle Scholar
  4. 4.
    Velasco F, Gordo E, Isabel R, Ruiz Navas EM, Bautista A, Torralba JM (2001) Int J Refractory Metals Hard Mater 19:319CrossRefGoogle Scholar
  5. 5.
    Zuomin L, Childs THC (2004) Wear 257:435CrossRefGoogle Scholar
  6. 6.
    Fleck NA, Smith RA (1981) Powder Metal 3:121CrossRefGoogle Scholar
  7. 7.
    Gnanamoorthy R, Rajiv N, Gopinath K, Miyashita Y, Mutoh Y (2002) ASM Int J Practical Failure Anal 2:71CrossRefGoogle Scholar
  8. 8.
    Gnanamoorthy R, Govindarajan N, Mutoh Y (2004) ASM J Failure Anal Prevention 4:78CrossRefGoogle Scholar
  9. 9.
    Kubicki B (1995) Powder Metal 38:295CrossRefGoogle Scholar
  10. 10.
    Wang J, Danninger H (1998) Wear 222:49CrossRefGoogle Scholar
  11. 11.
    ASTM B 328 (1996) Standard test method for density, oil content and interconnected porosity of sintered metal structural parts and oil-impregnated bearings, ASTM International, West Conshohocken, p 108Google Scholar
  12. 12.
    Howard A. Kuhn (1999) ASM Hand book 11 p 143Google Scholar
  13. 13.
    ASTM E 9–89 a, “Standard test methods of compression testing of metallic materials at room temperature, (ASTM International, West Conshohocken, 2000) p 104Google Scholar
  14. 14.
    Srinath G, Gnanamoorthy R (2005) J Mater Sci 40:2897CrossRefGoogle Scholar
  15. 15.
    Sustarsic B, Kosec L, Jenko M, Leskovsek V (2001) Vacuum 61:471CrossRefGoogle Scholar
  16. 16.
    Dhanasekaran S, Gnanamoorthy R (2007) Mater Design 28:1135CrossRefGoogle Scholar
  17. 17.
    Dhanasekaran S, Gnanamoorthy R, Unpublished resultsGoogle Scholar
  18. 18.
    Danninger H, Liersch A, Ratzi R (2000) In: Kosuge K, Nagai H (eds) Proceedings of 2000 powder metallurgy world congress, (2000, Japan Powder Metallurgy Association) p 1108Google Scholar
  19. 19.
    Rapoport L, Lvovsky M, Lapsker I, Leshchinsky W, Volovik Yu, Feldman Y, Tenne R (2001) Wear 249:150Google Scholar
  20. 20.
    Candela N, Velasco F, JM Torralba (1999) Mater Sci Eng A 259:98CrossRefGoogle Scholar
  21. 21.
    Srivastava AK, Sriram K, Lal GK (1988) Int J Mach Tool Manufact 28:181CrossRefGoogle Scholar
  22. 22.
    Zhang Z, Zhang L, Mai YW (1996) Wear 194:38CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringIndian Institute of Technology MadrasChennaiIndia

Personalised recommendations