MSCE  Vol.3 No.3 , March 2015
Study of Microstructure and Mechanical Behavior of Aluminum/Garnet/Carbon Hybrid Metal Matrix Composites (HMMCs) Fabricated by Chill Casting Method
HMMCs are significantly influenced by the reinforcements. Composites with two or more reinforcements and finer grain structures are extensively used due to improved mechanical and tribological properties. The evolution of finer and uniform microstructures is strongly dependent on the cooling rate during solidification. In this investigation stir cast hybrid composites of aluminum alloy LM13 was fabricated with garnet and carbon particulate reinforcements. Chills of various materials such as copper, steel, iron and silicon carbide was used to accelerate the solidification. Combination of dispersoid varies from 3 wt% to 12 wt% in steps of 3 wt% garnet and 3 wt% carbon particulates. Microstructure characterization and mechanical properties such as hardness and ultimate tensile strength of reinforced hybrid composites were examined. The test specimens are prepared and tested as per American society for testing and materials (ASTM) standard. Vickers hardness measurement was carried out to study the hardness of the composite. The effect of chill and reinforcement characteristics was presented and compared with the hybrid composite without chill material. The results confirm the positive relationship between mechanical behavior and the dispersiod content. The copper chill cast composite with 9 wt% garnet and 3 wt% carbon was found to increase mechanical properties.

Cite this paper
Prasad, M. and Bandekar, N. (2015) Study of Microstructure and Mechanical Behavior of Aluminum/Garnet/Carbon Hybrid Metal Matrix Composites (HMMCs) Fabricated by Chill Casting Method. Journal of Materials Science and Chemical Engineering, 3, 1-8. doi: 10.4236/msce.2015.33001.
[1]   Kainer, K.U., Ed. (2003) Metal Matrix Composites. Wiley-VCH.

[2]   Hemanth, J. (2011) Fracture Behavior of Cryogenically Solidified Aluminum Alloy Reinforced Metal Matrix Composites. JCEMS, 2, 110-111.

[3]   Hemanth, J. (2014) Heat Transfer Analysis during External Chilling of Composite Material Castings. Modeling and Numerical Simulation of Material Science, 4, 1-7.

[4]   Veeresh Kumar, G.B., Rao, C.S.P. and Selvaraj, N. (2011) Mechanical and Tribological Behavior of Particulate Reinforced Aluminum Metal Matrix Composites—A Review. JMMCE, 10, 59-32.

[5]   Deuis, R.L. and Subramanian, C. (1997) Dry Sliding Wear of Aluminum Composites—A Review. Composites Science and Technology, 57, 415-420.

[6]   Asif, M., Chandra, K. and Misra, P.S. (2011) Development of Aluminum Based Hybrid Metal Matrix Composites for Heavy Duty Applications. JMMCE, 10, 1337-1338.

[7]   Umanath, K., Palanikumar, K. and Selvamani, S.T. (2013) Analysis of Dry Sliding Wear Behaviour of Al6061/SiC/ Al2O3 Hybrid Metal Matrix Composites. Composites: Part B, 53, 159-168.

[8]   Baradeswaran, A. and Perumal, A.E. (2014) Study on Mechanical and Wear Properties of Al7075/Al2O3/Graphite Hybrid Composites. Composites: Part B, 56, 136-138.

[9]   Hemanth, J. (2011) Finite Element Wear Behavior Modeling of Al/Al2SiO5/C Chilled Hybrid Metal Matrix Composites (CHMMCs). Materials Sciences and Application, 2, 878-812.

[10]   Hemanth, J. (2010) Production and Mechanical Properties of Chilled Aluminum-Quartz Castable Particulate Composite. JMEPEG, 10, 143-149.

[11]   Leela, B.N. and Sreenivas Rao, K.V. (2012) Microstucture and Microhardness of Chill Cast Al-B4C Composites. IJMERR, 1.

[12]   Soleymani, S., Abdollah-Zadeh, A. and Alidokht, S.A. (2012) Microstructural and Tribological Properties of Al5083 Based Surface Hybrid Composite Produced by Friction Stir Processing. Wear, 278, 41-47.

[13]   Ravindran, P., Manisekar, K., Narayanasamy, R. and Narayanasamy, P. (2013) Tribological Behaviour of Powder Metallurgy-Processed Aluminium Hybrid Composites with the Addition of Graphite Solid Lubricant. Ceramics International, 39, 1169-1182.

[14]   Sharma, P. (2012) Determination of Mechanical Properties of Aluminium Based Composites. IJET, 3, 157-152.

[15]   Radhika, N., Subramanian, R. and Venkat Prasat, S. (2011) Tribological Behaviour of Aluminium/Alumina/Graphite Hybrid Metal Matrix Composite Using Taguchi’s Techniques. JMMCE, 10, 427-443.

[16]   Hemanth, J. (2010) Microstructure, Mechanical Properties and Wear Behavior of Metallic, Nonmetallic and Deep Cryo- genically Chilled ASTM A216 WCB Steel. Journal of Alloys and Compounds, 506, 645-647.

[17]   Hemanth, J. (2002) Wear Behavior of Chilled (Metallic and Non-Metallic) Aluminum Alloy-Glass Particulate Composite. Materials and Design, 23, 479-487.

[18]   Hemanth, J. (2000) The Solidification and Corrosion Behavior of Austempered Chilled Ductile Iron. Journal of Materials Processing Technology, 101, 159-166.

[19]   Hemanth, J. (2000) Action of Chills on Soundness and Ultimate Tensile Strength (UTS) of Aluminum-Quartz Particulate Composite. Journal of Alloys and Compounds, 296, 193-200.