Wear Characteristics of Al 6061 Reinforced with Graphite under Different Loads and Speeds

Abstract:

This work investigates Al 6061 alloy with graphite particle impregnated metal matrix composites under dry sliding conditions. The conventional casting techniques were used for preparing the composite material. Experiments were conducted under dry sliding conditions for determining the wear behavior of Al 6061 alloy- Graphite composite material with varying wt % graphite content under different sliding speeds and at different loads. Sliding distance of 250m was commonly used for the wear test. A pin on disc machine was used for conducting the wear test. The test was conducted under atmospheric conditions. Wear rate decreases with increased sliding speed and increases with increasing load. Worn surfaces of the composites were examined through scanning electron microscope. The wear loss of the composite material with 5Wt % graphite was found to be minimum with respect to sliding speeds and loads.

• Periodical: Advanced Materials Research (Volumes 287-290)
• Pages: 998-1002
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.287-290.998
• Online since: July 2011
• Authors: A. Baradeswaran, A. Elayaperumal
• Keywords: AA6061 Aluminum Alloy, Composite, Graphite, Pin on Disc, Wear

References

[1] B. C. Pai and P. K. Rohatgi, Graphite aiuminium - a potential bearing alloy, Trans.Indian Inst. Met., 27 (1974) 97 -101.

[2] B. C. Pai, P. K. Rohatgi and S. Venkatesh, Wear resistance of cast graphitic aluminium alloys, Wear, 30 (1974) 117 - 125.

DOI: 10.1016/0043-1648(74)90061-1

[3] P.R. Gibson, A.A. Das, Wear 95 (1984) 193-198.

[4] F. Akhlaghi, A. Zare-Bidaki Influence of graphite content on the dry sliding and oil impregnated sliding wear behavior of Al 2024–graphite composites produced by in situ powder metallurgy method, Wear 266 (2009) 37–45

DOI: 10.1016/j.wear.2008.05.013

[5] C.B. Lin , R.J. Chang, W.P. Weng , A study on process and tribological behavior of AI alloy / Gr. (p) composite, Wear 217 (1998) 167-174

DOI: 10.1016/s0043-1648(98)00192-6

[6] W.Ames, A.T.alps, Wear mechanismin hybrid composites of graphite -20Pct SiC in A356 aluminum alloy (Al-7 Pct Si -0.3Pct Mg), Metall, Mater, TransA26A 26A (1995)85-95

DOI: 10.1007/bf02669796

[7] A.R. Riai, A.T. Alpa, The role of tribolayers on the sliding wear behavior of graphite aluminium matrix composites, Wear251 (2001)1396-1407

[8] M.L. Ted Guo, C.Y.ATso, Tribologial behavior of aluminium /SiC/graphite hybrid composites, Mater.Sci .Eng 333A

[9] S. Das, S.V. Prasad, T.R. Ramachandran, Wear 133 1989 173-187.

[10] D. Huda, M.A. El Bradie, M.S.J. Hashmi, J. Mater. Processing Technol. 37 (1993) 513-528.

[11] B.P. Krishnan, M.K. Surappa, P.K. Rohatgi, J. Mater. Sci. 16 (1981) 1209-1216.

[12] M.K. Keshavan, A Review of High Pressure Diamond Coating Technology in Drilling Applications, Advances in Materials and Processes, Ed. P. Ramakrishnan, Oxford and IBH Publishing Co. Pvt. Ltd., New Delhi, p.599, (1993).

[13] Parimala Bai .B.N. Dwarkadas E.S and Biswas S.K.SEM studies of wear in LM 13 graphite particulate composite wear, 1982.76.211-220

DOI: 10.1016/0043-1648(82)90007-2

[14] Mazumdar, B.S Yegneswaran, A.H and, P.K. Rohatgi, strength and fracture behavior of metal matrix particulate composites. Mat. Sci.Engng. (1984) 68, 85-96

DOI: 10.1016/0025-5416(84)90246-5

[15] B.P. Krishnan, M.KSuraapa. P.K. Rohatgi, The UPAL process a direct method of preparing aluminium alloy –graphite particle composities, J.Mater.Sci16 (1981)1209-1216

DOI: 10.1007/bf01033834

[16] M.K. Surrapa, P.K. Rohatgi, Production of aluminium graphite particle composites, using copper coated graphite particle, Met.Technol. (1978)358-361.

[17] M.K. Keshavan, A Review of High Pressure Diamond Coating Technology in Drilling Applications, Advances in Materials and Processes, Ed. P. Ramakrishnan, Oxford and IBH Publishing Co. Pvt. Ltd., New Delhi, p.599, (1993).

[18] Jen Fin Lin, Ying Chong Yung, Chi Yuan Tsao, Tribological performance of 6061 aluminum alloy/graphite materials under oil-lubricated and dry sliding conditions , Tribology Transactions, 41 (1998) 251-261.

DOI: 10.1080/10402009808983746

[19] Koshi Adachia, Unchung Choa, Sujeet K. Sinhaa, Koji Katoa, Self-lubrication by formation of graphite films in the sliding of silicon nitride against cast iron, Tribology Transactions, 44 (2001) 41-46.

DOI: 10.1080/10402000108982424

[20] Z. Yea; H. S. Chenga; Nam S. Chang, Wear characteristics of particle-reinforced aluminum matrix composites in lubricated reciprocating contacts, Tribology Transactions, 41 (1998) 359-367.

DOI: 10.1080/10402009808983759

[21] Wenlin Ma, Jinjun Lu, Effect of Sliding Speed on Surface Modification and Tribological Behavior of Copper– Graphite Composite, Tribology Letters, 06, November (2010)

DOI: 10.1007/s11249-010-9718-x