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Abstract

In this study aluminum (Al-6070)/alumina (Al₂O₃), and Al-6070/ graphite (Gr) reinforced particles metal-matrix composites (MMCs) are fabricated by melt-stirring technique. The MMCs bars and plates are prepared with varying the reinforced particles volume fraction ranging from 5% to 15%. The average reinforced particles size of alumina (Al₂O₃) and graphite (Gr_p) are 23 μm and 53 μm, respectively. The stirring process was carried out at 200 rev/min rotating speed by graphite impeller for 15 min. The microstructure and mechanical properties are investigated on prepared MMCs. It was observed that the hardness of the composite is increased with increasing of reinforced particle volume fraction. The tensile strength and impact strength both are decreased with rising of reinforced volume fraction. The prepared composite plates are welded by gas welding with Al-Si-base filler metal. Rockwell hardness test was conducted and presented the test result for un-welded and welded zone.

Keywords

metal matrix composite melt stirring technique hardness SEM graph.

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References

Hashim, J. , Looney, L. and Hashmi, M.S.J. ( 2002). Particle Distribution in Metal Matrix Composites, Part-I , Journal of Materials Processing Technology, 123: 251-257.

Nather, S. , Brabazon, D. and Looney, L. ( 2003). Simulation of the Stir Casting Process, Journal of Materials Processing Technology, 143-144: 567-571.

Nai, S.M.L. and Gupta, M. (2003). Synthesis and Characterization of Free Standing, Bulk Al/Sicp Functionally Gradient Materials: Effects of Different Stirrer Geometries, Material Research Bulletin, 38: 1573-1589.

Hashim, J. , Looney, L. and Hashmi, M.S.J. ( 1999). Metal Matrix Composites: Production by the Stir Casting Method, Journal of Materials Processing Technology , 92-93: 1-7.

Manna, A. and Bhattacharyya, B. ( 2003). Study on Different Tooling Systems during Turning for Effective Machining of Al/SiC-MMC, The Institution of Engineers (India) Journal-Production, 83: 46-50.

Allison, J.E. and Cole, G.S. (1993). Metal Matrix Composite in Automotive Industry: Opportunities and Challenges, Journal of Mechanical Science, 19-24.

Surappa, M.K. (1997). Microstructure Evolution during Solidification of DRMMCs: State of the Art, Journal of Materials Processing Technology, 63: 325-333.

Yang, J. , Pickard, S.M. , Ctedy, C. , Evans, A.G. and Mehrabian, T. ( 1991). The Stress/Strain Behavior of Aluminium Matrix Composites with Discontinuous Reinforcements, Acta Metallurgica Materialia , 39: 1863-1870.

Lloyd, D.J. , Lagace, H. , Mcleod, A. and Morris, P.L. ( 1989). Micro Structural Aspect of Aluminium Silicon Carbide Particulate Composites Produced by a Casting Method, Materials Science and Engineering, A107: 73-79.

10.

Guo, Z. , Xiong, J. , Yang , M. and Li , W. (2008). Microstructure and Properties of Tetrapod-like ZnO Whiskers Reinforced Al Matrix Composite, Journal of Alloy and Compounds, 461: 342-345.

11.

Sulaiman, S. , Sayuti, M. and Samin, R. ( 2008). Mechanical Properties of the As-Cast Quartz Particulate Reinforced LM6 Alloy Matrix Composites, Journal of Material Processing Technology, 201: 731-735.

12.

Zhou, W. and Xu, Z.M. ( 1997). Casting of SiC Reinforced Metal Matrix Composites , Journal of Materials Processing Technology, 63: 358-363.

13.

Gupta, M. , Lai, M.O. and Lim, C.Y.H. ( 2006). Development of a Novel Hybrid Aluminium Based Composite with Enhanced Properties, Journal of Materials Processing Technology, 176: 191-199.

14.

Ourdjini, A. , Chew, K.C. and Khoo, B.T. (2001). Settling of Silicon Carbide Particles in Cast Metal Matrix Composites, Journal of Materials Processing Technology, 116: 72-76.

15.

Srivatsan, T.S. , Sudarshan, T.S. and Lavernia, E.J. (1995). Processing of Discontinuously-Reinforced Metal Matrix Composites by Rapid Solidification, Progress in Material Science, 39: 317-409.

Experimental Study on Fabrication of Al-Al 2 O 3 /Gr p Metal Matrix Composites

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