Solidification and structure of heterophase composite

• Autorzy: Dolata-Grosz A. , Dyzia M. , Śleziona J.
• Konferencja: 12th International Scientific Conference CAM3S'2006, 27-30th November 2006, Gliwice-Zakopane
• Języki publikacji: EN

Abstrakty

EN

In this paper, the structure and solidification curves are presented for a homo- and heterophase composite. The results of research on the solidification process are compared for the applied aluminium alloy matrix (AlSi12CuNiMg2) and for composites containing one type of particles (Al2O3) and heterophase reinforcement (mixture of Al2O3 particles + glassy carbon - Cg). Design/methodology/approach: The course of the solidification process was recorded by means of a system which enabled continuous control and measurement of the metal temperature during solidification of the composite suspension. The system was equipped with a thermoelectric cup core QC4080, with an incorporated thermocouple of K type (NiCr-Ni). The application of disposable thermoelectric cup cores of identical heat abstraction coefficient and known, standardized dimensions, ensured identical conditions and rate of heat abstraction during the cooling of the castings. Findings: The research has shown, glassy carbon particles have an influence on both temperature change and the time of composite castings solidification. The changes results, first of all, from disparate physical properties of the glassy carbon particles used (thermal conductivity, mass density), compared to aluminium oxide particles (Al2O3). Practical implications: Glassy carbon particles decrease shrinkage of the casting and change the nature of its crystallization. Originality/value: Employment of heterophase reinforcement allows to get segregation and sedimentation in the matrix, which results in the occurrence of a gradient structure.

Słowa kluczowe

EN

composites; solidification; ceramic particles; glass carbon particles

PL

kompozyty; utwardzanie; cząstki ceramiczne; węgiel szklisty

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 20, nr 1-2
• Strony: 103--106
• Opis fizyczny: Bibliogr. 22 poz., fot., rys.

Twórcy

autor

Dolata-Grosz A.

autor

Dyzia M.

autor

Śleziona J.

• Department of Alloys and Composite Materials Technology, Faculty of Materials Science and Metallurgy, Silesian University of Technology, ul. Krasińskiego 8, 40-019 Katowice, Poland,

Bibliografia

• [1] J. Hashim, L. Looney. M.S.J. Hashim, Metal matrix composites: production by the stir casting method, Journal of Material Processing Technology, 92-93 (1999) 1-7.
• [2] J.W. Kaczmar, K. Pietrzak, W. Włosiński, The production and application of metal matrix composites material, Journal of Material Processing Technology, 106 (2000) 58-67.
• [3] J. Śleziona, Forming of the properties Al. alloys-ceramic particles production by the foundry methods, ZN. 47; Silesian University of Technology, Gliwice 1994, (in Polish).
• [4] J. Śleziona, Influence ceramic particles on Al-SiC i Al-Al203 composites solidification, Archives of Material Science, 16(1995) 163-178, (in Polish).
• [5] D.J. Lloyd, Solidification microstructure of particulate reinforced aluminum / SiC composites, Composite Science Technology, 35 (1989) 159-179.
• [6] M.K. Surappa, Microstructure evolution during solidification of DRMMCs: state of art, Journal of Material Processing Technology, 63 (1997) 325-333.
• [7] B. Dutta, M.K. Surappa, Microstructure evolution during multidirectional solidification of Al.-Cu-SiC composites, Composites, 29 (1998) 565-573.
• [8] J. Braszczyński, A. Zyska, Analysis of the influence of ceramic particles on the solidification process of metal metal matrix composites., Materials Science, and Engineering, 278 (2000) 195-203.
• [9] S. Nagarajan, B. Dutta, M.K. Surappa, The effect of SiC particles on the size and morphology of eutectic silicon in cast A356/SiCp composites, Composite Science and Technology, 59 (1999) 897-902.
• [10] J.W.Garvin, H.S. Udaykumar, Particle-solidification from dynamics using a fully coupled approach, part II: comparison of drag expressions, Journal of Crystal Growth, 252 (2003) 467-479.
• [11] M. Cholewa, Simulation of solidification process for composite micro-region with incomplete wetting of reinforcing particle, Journal of Material Processing Technology, 164-165 (2005) 1181-1184.
• [12] M. Dyzia, A. Dolata-Grosz, J. Śleziona, J. Wieczorek, Structure of AK12+2%Mg composites reinforced by ceramics particles received in different heat transfer conditions, Archives of Foundry, 1 (2001) 88-93, (in Polish).
• [13] E. Fraś, Particles interaction with solidification front, Archives of Foundry, 6 (2006) 339-344, (in Polish).
• [14] J. Braszczyński, M.Cisowska, Test of solidification estimate of AlMg/SiC+Cgr hybrid composites, Solidification of Metals and Alloys, 40 (1999), (in Polish).
• [15] J. Myalski, J. Śleziona, M. Dyzia, Characterstic solidification aluminium alloys matrix composites, Archives of Foundry, 3 (2003) 61-66, (in Polish).
• [16] A. Dolata-Grosz, J. Wieczorek, J. Śleziona, M. Dynia, Possibilities of the use of vacuous technologies for composite mixture quality rising , Archives of Foundry, 6 (2006) 285-290, (in Polish).
• [17] J. Śleziona, J. Wieczorek, A. Dolata-Grosz, The influence of the degassing process on the structure of aluminium composites containing glass carbon and silicon carbide particles Engineering Science, 151 (2006) 665-667, (in Polish).
• [18] A. Dolata-Grosz, M. Dyzia, J. Śleziona, J. Myalski, The analysis of solidification process of heterophase composite, Archives of Foundry, 22 (2006) 145-151, (in Polish).
• [19] A. Dolata-Grosz, J. Śleziona, J. Myalski, B.Formanek, J. Wieczorek, The formation of the structure of composite aluminium casts with multiphase reinforcement, Engineering Science, 151 (2006) 688-691, (in Polish).
• [20] J. Myalski, J. Śleziona, Metal composites reinforced glass carbon particles, Archives of Foundry 1/2005, 24-33, (in Polish).
• [21] J. Myalski, Aluminium metal matrix composites material reinforced glass carbon particles, Engineering Science, 6 (2002) 745-748, (in Polish).
• [22] A. Dolata-Grosz, Influence of ceramic reinforcement kind on the solidification process of aluminium matrix (in preparation).