Bismuth Effect on the Mechanical Properties of Antifriction Al-Sn Alloys

Isai Rosales, Gonzalo Gonzalez-Rodriguez, Jose Luis Gama, Rene Guardian

Centro de Investigación en Ingeniería y Ciencias Aplicadas-FCQ e Ing.UAEM., Cuernavaca, Mexico.

DOI: 10.4236/msa.2014.55038                

Abstract

Al-Sn alloys were produced by the induction melting method with different Bi additions. Microstructure shows grains 130 μm average size. Fracture toughness and hardness tests have shown that ternary alloying elements present significantly affected the samples with Bi alloying. Plastic deformation was evaluated by using the forging test; the results have shown that the addition of 3.5 at.% Bi increased the value at least twice as compared with unalloyed sample. Wear test indicated that bismuth slightly affected the tribological behavior. It was found that a concentration of 3.0 at.% Bi, considerably enhances the alloys performance.

Keywords

EBSD, Mechanical Characterization, Aluminum Alloys, Plasticity, Wear

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Pathak, J.P. and Mohan, S. (2003) Tribological Behavior of Conventional Al-Sn and Equivalent Al-Pb Alloys under Lubrication. Bulletin of Materials Science, 26, 315-320. http://dx.doi.org/10.1007/BF02707453
[2]	Papworth, A. and Fox, P. (1998) The Disruption of Oxide Defects within Aluminium Alloy Castings by the Addition of Bismuth. Materials Letters, 35, 202-206. http://dx.doi.org/10.1016/S0167-577X(97)00244-9
[3]	Abed, E.J. (2012) Study of Solidification and Mechanical Properties of Al-Sn Casting Alloys Asian Transactions on Engineering 02 Issue 03, 89-98.
[4]	Babu Rao, J., Kamaluddin, S., Appa Rao, J., Sarcar, M.M.M. and Bhargava, N.R.M.R. (2009) Deformation Behavior of Al-4Cu-2Mg Alloy during Cold Upset Forging. Advanced Tribology, 417-421.
[5]	Zhao, Y.Q., Wei, J.F., Wu, W.L. and Guo, P. (2007) Research on Semi-Solid Deformation and Forging Behavior of Ti14 Alloy. Materials Science Forum, 546-549, 1373-1378. http://dx.doi.org/10.4028/www.scientific.net/MSF.546-549.1373
[6]	Liu, X., Zeng, M.Q., Ma, Y. and Zhu, M. (2008) Wear Behavior of Al-Sn Alloys with Different Distribution of Sn Dispersoids Manipulated by Mechanical Alloying and Sintering. Wear, 265, 1857-1863.
[7]	Hahn, G.T. and Rosenfield, A.R. (1975) Metallurgical Factors Affecting Fracture Toughness of Aluminum Alloys. Metallurgical and Materials Transactions A, 653-668.
[8]	Kobayashi, T. (2000) Strength and Fracture of Aluminium Alloys. Materials Science Engineering, A286, 333-341. http://dx.doi.org/10.1016/S0921-5093(00)00935-7
[9]	Bhattacharya, V. and Chattopadhyay, K. (2004) Microstructure and Wear Behaviour of Aluminium Alloys Containing Embedded Nanoscaled Lead Dispersoids. Acta Materialia, 52, 2293-2304. http://dx.doi.org/10.1016/j.actamat.2004.01.020
[10]	Zhu, M. and Gao Y. (2000) Improvement of the Wear Behavior of Al-Pb Alloys by Mechanical Alloying. Wear, 242, 47-53. http://dx.doi.org/10.1016/S0043-1648(00)00397-5
[11]	Harris, S.J., McCartney, D.G., Horlock, A.J. and Perrin, C. (2000) Production of Ultrafine Microstructure in Al-Sn, Al-Sn-Cu and Al-Sn-Cu-Si Alloys for Use in Tribological Applications. Materials Science Forum, 331-337, 519-526.
[12]	Feyzullahog, E. (2010) The Wear of Aluminium-Based Journal Bearing Materials under Lubrication. Materials and Design, 31, 2532-2539. http://dx.doi.org/10.1016/j.matdes.2009.11.037