• Seelam Pichi Reddy L.B.Reddy College of Engineering, Mylavaram, Andra Pradesh -521230, India.
  • Bolla Ramana L.B.Reddy College of Engineering, Mylavaram, Andra Pradesh -521230, India.
  • Chennakesava Reddy A JNTU College of Engineering, Hyderabad, Andra Pradesh-500085, India.


Metal Matrix Composites, Fly Ash Content, Ejection Pressure, Green Density


Metal Matrix Composites (MMCs) are engineering materials formed by combination of two or more dissimilar materials of which atleast one is a metal. In the present investigation Al-15%Pb powders containing 0, 5, 10, 15 and 20 weight % Fly Ash were prepared. The powder mixtures were compacted at pressures ranging from 200-400 Mpa. The effects of compaction pressure and fly ash content on green properties of compacts were determined. It was found that green density, ejection pressure and spring back increased and true porosity decreased with increasing compaction pressure. For a fixed compaction pressure increasing fly ash content was found to decrease ejection pressure and green density.


Download data is not yet available.


Metrics Loading ...


Rohatgi P K Ray and Sand Lill Y (1993), “Tribological Properties of Metal Matrix Graphite Particle Composites”, Int. Mater., Vol. 37(3), 129-152.

Clync T W and Withers P J (1993), “An Introduction to Metal Matrix Composites”, Cambridge University Press, New York.

Hoffman M, Skirl S, Pompe W and Rodel J, (1999), “Thermal Residual Strains and Stresses in Al2O3/Al Composites with

Interpenetrating Networks”, Acta Materialia, Vol. 47 (2), 565-577.

Kim J K, Kestursatya M and Rohatgi P K (2000), “Tribological Properties of Centrifugally Cast Copper Alloy- Graphite Particle Composite”, Metallurgical and Materials Transactions A, Vol. 31 (4), 1283-1293.

Rohatgi P K, Gupta N and Simon Alaraj (2006), “Thermal Expansion of Aluminum Fly Ash Cenosphere Composites Synthesized by Pressure Infiltration Technique”, Journal of Composite Materials, Vol. 40 (13), 1163-1174.

Pratt G C (1973), “Materials for Plain Bearings”, International Materials Reviews, Vol. 18 (27), 58-62.

Evans C J (1980), “Tin in Plain Bearings”, Tin and its Uses, Vol. 126, 8-12.

Surappa M K and Rohatgi P K (1978), “Production of Aluminum Graphite Particle Composites using Cu-Coated Graphite Particles”, Metals Technology, Vol. 5, 358-361.

Nath D, Biswas S K and Rohatgi P K (1980), “Wear Characteristics and Bearing Performance of Alumina-Mica Particle Composite Materials”, Wear, Vol. 60, 61-73.

Patton A M (1972), “Foundry Trails of Graphite-Containing Aluminum Alloys”, Journal of Institute of Metals, Vol. 100, 197-201.

Eppich R E, Webbere F J and Dawson R N (1971), “A New Bearing Materials Cast From Immiscible Metals”, Metals Engineering Quarterly, Vol. 11, 33-39.

Gorbunov G V, Parshin V D and Panin V V (1971), “Aluminum Graphite Antifriction Alloys”, Russian Castings Production, Vol. 8, 348-353.

Tiwari S N, Pathak J P and Malhotra S L (1979), “Production of High Leaded Aluminum by Impeller Mixing”, Metals Technology,

Vol. 6, 442-445.

Raybould D (1982), “Wear –Resistant Al- Steel- Pb Admixed Alloys Produzced by Dynamic Compaction”, Powder Metallurgy, Vol. 25, 35-41.

Gopinath M (1979), “Proceedings National Conference on Aluminum Metallurgy, IISc, Banglore, India, 289-294.

Mackay M.L (1977), “Innovation in Powder Metallurgy-An Engine Bearing Material”, Metal Progress, Vol. 111, 32-35.

Nath D, Bolla R and Chandra S (1992), “Compacting Behaviour of Al-Pb Mixtures”, Powder Metallurgy International, Vol. 24(2),


Deo Nath, Raman Bolla and Sushil Chandra (1995), “Compacting and Sintering Behavior of Al-15% Pb Powder Mixture”, Powder Metallurgy Science & Technology, Vol. 6(4), 25-31.

Mahendra K V and RadhaKrishna K (2007), “Fabrication of Al – 4.5% Cu Alloy with Fly Ash Metal Matrix Composites and its

Characterization”, Material Science – Poland, Vol. 25(1), 57-68.

Rohatgi P K, Guo R Q, Huang P and Ray S (1997), “Friction and Abrasion Resistance of Cast Al Alloy Fly Ash Composites”, Metallurgical and Materials Transactions, Vol. 28(A), 245-250.

Bolla Ramana, Gunturi S. Murthy (2000), “Compacting Behaviour of Aluminum- Fly Ash Powder Mixture”, 3rd National Symposium of Research Scholars on Metals and Materials, IIT Madras, Chennai.

Nia F and Davies B L (1982), “Production of Al-Cu and Al-Cu-Si Alloys by PM Methods”, Powder Metallurgy, Vol. 25, 209-213.




How to Cite

Seelam Pichi Reddy, Bolla Ramana, and C. R. A, “COMPACTING CHARACTERISTICS OF AL-15%Pb-FLY ASH METAL MATRIX COMPOSITES”, JME, vol. 5, no. 1, pp. 55–59, Mar. 2010.