Effects of Random Particle Dispersion and Particle Volume Fraction on the Indentation Behavior of SiC Particle-Reinforced Metal-Matrix Composites

Abstract

The present composite structure models assume that reinforcement particles are located in a repeated arrayed order through metal matrix. This study investigates the effect of both random particle distribution and particle volume fraction on the indentation behavior of Al 1080/SiC particle reinforced metal—matrix composites under a spherical indenter. The ceramic particles were distributed randomly in a certain particle volume fraction through aluminum matrix in order to achieve a similar structure to a real particulate composite structure as possible. The particle volume fraction strongly affects permanent indentation surface profiles and indentation depths. The indentation profile becomes smoother, and the peak indentation depth increases as the particle volume fraction decreases. The random particle distribution has a small effect on the peak indentation depth but affects strongly the permanent indentation profiles as well as the residual stress and strain fields in the indentation region. A small increase appears in the local particle concentration in the indentation region and is affected considerably by the random particle distribution. The hardness tests as well as the scanning electron microscopy micrographs of the indentation regions of specimens with different particle volume fractions are in good agreement with theoretical analysis.

Keywords

metal—matrix composites nonlinear behavior finite element analysis scanning electron microscopy powder processing.

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References

Gouldstone, A. , Chollacoop, N. , Dao , M. , Li , J. , Minor, A.M. and Shen, Y.L. (2007). Indentation Across Size Scales and Disciplines: Recent Developments in Experimentation and Modeling , Acta Materialia, 55: 4015-4039.

Pereyra, R. and Shen, Y.L. ( 2004). Characterization of Particle Concentration in Indentation-deformed Metal-Ceramic Composites , Materials Characterization, 53: 373-380.

Pereyra, R. and Shen, Y.L. ( 2005). Characterization of Indentation-induced ‘Particle Crowding’ in Metal Matrix Composites , International Journal of Damage Mechanics, 14(3): 197-213.

Kucharski, S. and Mroz, Z. (2001). Identification of Plastic Hardening Parameters of Metals From Spherical Indentation Tests , Materials Science & Engineering A, 318: 65-76.

Fisher-Cripps, A.C. ( 2002). Nanoindentation, Springer Verlag , New York.

Dao, M. , Chollacoop, N. , Van Vliet, K.J. , Venkatesh, T.A. and Suresh, S. ( 2001). Computational Modeling of the Forward and Reverse Problems in Instrumented Sharp Indentation, Acta Materialia, 49: 3899-3918.

Mata, M. and Alcala, J. ( 2004). The Role of Friction on Sharp Indentation, Journal of the Mechanics and Physics of Solids, 52: 145-165.

Cheng, Y.T. and Cheng, C.-M. ( 1999). Can Stress-Strain Relationships be Obtained From Indentation Curves Using Conical and Pyramidal Indenters, Journal of Materials Research, 14: 3493-3496.

Bolshakov, A. , Oliver, W.C. and Pharr, G.M. (1996). Influences of Stress on the Measurement of Mechanical Properties Using Nanoindentation - 2: Finite Element Simulations, Journal of Materials Research , 11: 760-768.

10.

Shen, Y.L. , Fishencord, E. and Chawla, N. ( 2000). Correlating Macrohardness and Tensile Behavior in Discontinuously Reinforced Metal Matrix Composites, Scripta Materialia, 42: 427-432.

11.

Shen, Y.L. and Chawla, N. ( 2001). On the Correlation Between Hardness and Tensile Strength in Particle Reinforced Metal Matrix Composites, Materials Science & Engineering A, 297: 44-47.

12.

Shen, Y.L. , Williams, J.J. , Piotrowski, G. , Chawla, N. and Guo, Y.L. ( 2001). Correlation Between Tensile and Indentation Behavior of Particle-reinforced Metal Matrix Composites: An Experimental and Numerical Study, Acta Materialia, 49: 3219-3229.

13.

Kozola, B.D. and Shen, Y.L. (2003). A Mechanistic Analysis of the Correlation Between Overall Strength and Indentation Hardness in Discontinuously Reinforced Aluminum, Journal of Materials Science, 38: 901-907.

14.

Shen, Y.L. and Guo, Y.L. ( 2001). Indentation Response of Heterogeneous Materials , Modeling and Simulation in Material Science and Engineering , 9: 391-398.

15.

Ege, E.S. and Shen, Y.-L. (2003). Effects of Inclusions and Porosity on the Indentation Response, Materials Research Society Symposium Proceedings, 750: Y6.2.1-Y6.2.6.

16.

Durst, K. , Goken, M. and Vehoff, H. ( 2004). Finite Element Study for Nanoindentation Measurement on Two-phase Materials, Journal of Materials Research, 19(1): 85-93.

17.

Olivas, E.R. , Swadener, J.G. and Shen, Y.L. (2006). Nanoindentation Measurement of Surface Residual Stresses in Particle-reinforced Metal Matrix Composites , Scripta Materialia, 54: 263-268.

18.

Rosenberger, M.R. , Forlerer, E. and Schvezov, C.E. (2007). Modeling the Micro-indentation of Metal Matrix Composites, Materials Science & Engineering A, 463: 275-283.

19.

ABAQUS/Standard (ver 6.5) ( 2005). Finite Element Software. Available at: http://www.simulia.com/support/v65/v65_platforms.html (accessed January 2005).

20.

Python Programming Language (2005). Available at: http://www.python.org (accessed January 2005).

21.

ASTM E18-07 (2007). Standard Test Method for Rockwell Hardness of Metallic Materials , ASTM, Philadelphia.

22.

Vander Voort, G.F. (1984). Metallography - Principles and Practice, McGraw-Hill, New York .