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Purpose: MMCs have microscopic scale thermal residual stress that is generated after cooling from high temperature Because of the difference of thermal expansion coefficient between the matrix and reinforcement. Because of their high service temperature, automobile parts experience thermal cycling between room and service temperature. Those thermal cycles can vary the properties of the MMCs by changing residual stress field. In this study, the relations between residual stresses and hardness were investigated. Design/methodology/approach: For the residual stress investigations, thermal cycling test was performed. After thermal cycling testing, the thermal residual stress of the MMC was investigated using high resolution Xray diffraction test. On the other hand, the residual stress was calculated by the finite elements method and it was compared to the experimental results. Findings: The residual stress relaxed in the matrix with thermal cycling. With the relaxation of the residual stress, the hardness of the composite was decreased. Research limitations/implications: In this study, the relaxation of residual stress of MMCs was observed with thermal cycling. Further investigations for the mechanical properties, like tensile behaviour and wear properties, should be needed in next study. Originality/value: In this study, numerically calculated residual stress in magnesium matrix MMCs was compared with experimental results.
Wydawca
Rocznik
Tom
Strony
17--20
Opis fizyczny
Bibliogr. 13 poz.
Bibliografia
- [1] D.M. Lee, B.K. Suh, B.G. Kim, J.S. Lee, C.H. Lee, Fabrication, microstructures, and tensile properties of magnesium alloy AZ91/SiCp composites produced by powder metallurgy, Materials Science and Technology 13 (1997) 590-595.
- [2] K.K. Ulrich, Development of Magnesium matrix composites for power train application, Proceedings of the 12th International Conference "Composite Materials" ICCM-12, Paris, 1999, 453-458.
- [3] C. Mayencourt, R. Schaller, Development and characterization of high damping magnesium based composites, Proceedings of the 12th International Conference "Composite Materials" ICCM-12, Paris, 1999, 459-457.
- [4] C.O. Son, S.H. Lee, Characterization of mechanical and in-situ fracture behavior of reaction squeeze cast hybrid Al matrix composites, Proceedings of the 12th International Conference "Composite Materials" ICCM-12, Paris, 1999, 659-667.
- [5] M. Zheng, K. Wu, H. Liang, S. Kamado, Y. Kojima, Microstructure and mechanical properties of aluminium borate whisker-reinforced magnesium matrix composites, Materials Letters 57 (2002) 558-564.
- [6] T.W. Clyne, P.J. Withers, An introduction to metal matrix composites. Cambridge University Press, 1993.
- [7] G.L. Povirk, A. Needleman. S.R. Nutt, An analysis of residual stress formation in whisker-reinforced Al-SiC composites, Materials Science Engineering A 129 (1990) 125-140.
- [8] G.L. Povirk, A. Needleman. S.R. Nutt, An analysis of the effect of residual stresses on deformation and damage mechanisms in Al-SiC composites, Materials Science Engineering A 132 (1991) 31-38.
- [9] Y.L. Shen, A. Needleman, S. Suresh, Coefficients of thermal expansion of metal-matrix composites for electronic packaging, Metallurgical and Materials Transactions A 25 (1994) 839-850.
- [10] R. Kolhe, C.Y. Hui, E. Ustundag, S.L. Sass, Residual thermal stresses and calculation of the critical metal particle size for interfacial crack extension in metal-ceramic matrix composites, Acta Materialia 44/1 (1996) 279-287.
- [11] E. Zywicz, E.M. Parks, Thermo-viscoplastic residual stresses in metal matrix composites. Composite Science and Technology 33/4 (1988) 295-315.
- [12] M. Jain, S.R. MacEwen, L. Wu, Finite element modelling of residual stresses and strength differential effect in discontinuously reinforced metal matrix composites, Materials Science Engineering A 183 (1994) 111-120.
- [13] A. Weiland, T. Johannesson, Residual stresses in fibre- and whisker-reinforced aluminium alloys during thermal cycling measured by X-ray diffraction, Materials Science Engineering A 190/1 (1995) 131-142.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BSL8-0028-0030