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Tribology Letters

, Volume 27, Issue 2, pp 221–225 | Cite as

Effect of ECAE on Microstructure and Tribological Properties of Cu–10%Al–4%Fe Alloy

  • L. L. Gao
  • X. H. Cheng
Original Paper

Abstract

Equal channel angular extrusion (ECAE) process was carried out for a commercial aluminum bronze alloy (Cu–10%Al–4%Fe) produced by hotrolling at high temperature. The effect of ECAE on microstructure, mechanical, and tribological properties of the alloy was investigated. Experimental results showed that the grain size of the alloy decreased with the increase of the pass number of ECAE. After applying ECAE with six passes, the hardness and yield strength of the alloy increased from 118 kgf/mm2 and 356 MPa to 165 kgf/mm2 and 588 MPa, respectively. The friction coefficient and wear rate of the aluminum bronze alloy were largely reduced due to the improvement of mechanical properties after ECAE. The adhesive wear was the primary wear mechanism for the specimen without ECAE, while abrasive wear was dominant for the specimen with ECAE after six passes.

Keywords

Equal channel angular extrusion Grain refinement Microstructure Friction Wear 

Notes

Acknowledgments

This research is financially supported by National Natural Science Foundation of China (Grant No. 50275093) and instrumental analysis center of Shanghai Jiao Tong University.

References

  1. 1.
    Park, K.-T., Myung, S.-H., Shin, D.H., Lee, C.S.: Size and distribution of particles and voids pre-existing in equal channel angular pressed 5083 Al alloy: their effect on cavitation during low-temperature superplastic deformation. Mater. Sci. Eng. A 371, 178–186 (2004)CrossRefGoogle Scholar
  2. 2.
    Rabkin, E., Gutman, I., Kazakevich, M., Buchman, E.: Correlation between the nanomechanical properties and microstructure of ultrafine-grained copper produced by equal channel angular pressing. Mater. Sci. Eng. A 396, 11–21 (2005)CrossRefGoogle Scholar
  3. 3.
    Vinogradov, A., Ishida, T., Kitagawa, K., Kopylov, V.I.: Effect of strain path on structure and mechanical behavior of ultrafine grain Cu–Cr alloy produced by equal-channel angular pressing. Acta Mater. 53, 2181–2192 (2005)CrossRefGoogle Scholar
  4. 4.
    Huang, W.H., Chang, L., Kao, P.W., Chang, C.P.: Effect of die angle on the deformation texture of copper processed by equal channel angular extrusion. Mater. Sci. Eng. A 307, 113–118 (2001)CrossRefGoogle Scholar
  5. 5.
    Baik, S.C., Estrin, Y., Kim, H.S.: Dislocation density-based modeling of deformation behavior of aluminium under equal channel angular pressing. Mater. Sci. Eng. A 351, 86–97 (2003)CrossRefGoogle Scholar
  6. 6.
    Gholinia, A., Bate, P., Prangnell, P.B.: Modeling texture development during equal channel angular extrusion of aluminum. Acta Mater. 50, 2121–2136 (2002)CrossRefGoogle Scholar
  7. 7.
    Chen, Y.C., Huang, Y.Y., Chang, C.P., Kao, P.W.: The effect of extrusion temperature on the development of deformation microstructures in 5052 aluminium alloy processed by equal channel angular extrusion. Acta Mater. 51, 2005–2015 (2003)CrossRefGoogle Scholar
  8. 8.
    Cao, W.Q., Godfrey, A., Liu, Q.: EBSP investigation of microstructure and texture evolution during equal channel angular pressing of aluminium. Mater. Sci. Eng. A 361, 9–14 (2003)CrossRefGoogle Scholar
  9. 9.
    Li, Z.H., Xiang, G.Q., Cheng, X.H.: Effects of ECAE process on microstructure and transformation behavior of TiNi shape memory alloy. Mater. Design 27, 324–328 (2006)CrossRefGoogle Scholar
  10. 10.
    Li, Z.H., Cheng, X.H., ShangGuan, Q.Q.: Effects of heat treatment and ECAE process on transformation behaviors of TiNi shape memory alloy. Mater. Lett. 59, 705–709 (2005)CrossRefGoogle Scholar
  11. 11.
    Wu, J., Cheng, X.H.: The tribological properties of Kevlar pulp reinforced epoxy composites under dry sliding and water lubricated condition. Wear. 261, 1293–1297 (2006)CrossRefGoogle Scholar
  12. 12.
    Liu, Z.Y., Liang, G.X., Wang, E.D., Wang, Z.R.: The effect of cumulative large plastic strain on the structure and properties of a Cu–Zn alloy. Mater. Sci. Eng. A 242, 137–140 (1998)CrossRefGoogle Scholar
  13. 13.
    Yamashita, A., Yamaguchi, D., Horita, Z., Langdon, T.G.: Influence of pressing temperature on microstructural development in equal-channel angular pressing. Mater. Sci. Eng. A 287, 100–106 (2000)CrossRefGoogle Scholar
  14. 14.
    Haouaoui, M., Hartwig, K.T., Payzant, E.A.: Effect of strain path on texture and annealing microstructure development in bulk pure copper processed by simple shear. Acta Mater. 53, 801–810 (2005)CrossRefGoogle Scholar
  15. 15.
    Yu, J., Xu, Z., Zhao, D.C., Liu, Z.L.: Tribology. Hunan Science and Technology Press, Changsha (1994)Google Scholar
  16. 16.
    Prasada Rao, A.K., Das, K., Murty, B.S., Chakraborty, M.: Microstructural and wear behavior of hypoeutectic Al–Si alloy (LM25) grain refined and modified with Al–Ti–C–Sr master alloy. Wear 261, 133–139 (2006)CrossRefGoogle Scholar
  17. 17.
    Farhat, Z.N., Ding, Y., Northwood D.O., Alpas A.T.: Effect of grain size on friction and wear of nanocrystalline aluminum. Mater. Sci. Eng. A 206, 302–313 (1996)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghaiP.R. China
  2. 2.National Power Traction Laboratory of Southwest Jiaotong UniversityChengduP.R. China

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