Bending strength and fracture investigations of Cu based composite materials strengthened with \delta-alumina fibres

• Autorzy: Kaczmar J. W. , Granat K. , Naplocha K. , Kurzawa A. , Grodzka E. , Samociuk B.
• Języki publikacji: EN

Abstrakty

EN

Bending strength, thermal and electric conductivity and microstructure examinations of Cu based composite materials reinforced with Saffil alumina fibres are presented. Materials were produced by squeeze casting method applying the designed device and specially elaborated production parameters. Applying infiltration pressure of 90MPa and suitable temperature parameters provided manufacturing of copper based composite materials strengthened with Saffil alumina fibres characterized by the low rest porosity and good fibre-matrix interface. Three point bending tests at temperatures of 25, 100 and 300ºC were performed on specimens reinforced with 10, 15 and 20% of Saffil fibres. Introduced reinforcement effected on the relatively high bending strengths at elevated temperatures. In relation to unreinforced Cu casting strength of composite material Cu – 15vol.% Saffil fibres increase by about 25%, whereas at the highest applied test temperature of 300ºC the improvement was almost 100%. Fibres by strengthening of the copper matrix and by transferring loads from the matrix reduce its plastic deformation and hinder the micro-crack developed during bending tests. Decreasing of thermal and electrical conductivity of Cu after incorporating fibres in the matrix are relatively small and these properties can be acceptable for electric and thermal applications.

Słowa kluczowe

EN

metal matrix composite; copper; alumina fibre; squeeze casting; bending strength

PL

kompozyt metalowy; miedź; włókno aluminiowe; prasowanie stopu; wytrzymałość na zginanie

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2013
• Tom: Vol. 13, iss. 2
• Strony: 59--63
• Opis fizyczny: Bibliogr. 11 poz., rys., tab., wykr.

Twórcy

autor

Kaczmar J. W.

• Institute of Machine Engineering and Automation, Wroclaw University of Technology, ul. Łukasiewicza 5, PL-50-371 Wrocław, Poland

autor

Granat K.

• Institute of Machine Engineering and Automation, Wroclaw University of Technology, ul. Łukasiewicza 5, PL-50-371 Wrocław, Poland

autor

Naplocha K.

• Institute of Machine Engineering and Automation, Wroclaw University of Technology, ul. Łukasiewicza 5, PL-50-371 Wrocław, Poland

autor

Kurzawa A.

• Institute of Machine Engineering and Automation, Wroclaw University of Technology, ul. Łukasiewicza 5, PL-50-371 Wrocław, Poland

autor

Grodzka E.

• Institute of Machine Engineering and Automation, Wroclaw University of Technology, ul. Łukasiewicza 5, PL-50-371 Wrocław, Poland

autor

Samociuk B.

• Institute of Machine Engineering and Automation, Wroclaw University of Technology, ul. Łukasiewicza 5, PL-50-371 Wrocław, Poland

Bibliografia

• [1] Kaczmar, J.W. & Pietrzak, K. & Włosiński, W. (2000). The production and application of metal matrix composite materials, Journal of Materials Processing Technology, 106(1-3), 58-67.
• [2] Kainer, K. U. (2006). Metal Matrix Composites. Materials for Automotive and Aerospace Engineering. Weinheim.
• [3] Naplocha, K. & Kaczmar, J. W. (2012). Wear behavior of fiber-reinforced aluminum alloy composites. Advanced Materials & Processes. 3, 24-27.
• [4] Kaczmar, J.W. & Naplocha, K. (2010). Wear behaviour of composite materials based on 2024 Al-alloy reinforced with \delta alumina fibres. Journal of Achievements in Materials and Manufacturing Engineering. 43(1), 88-93.
• [5] Konopka, Z. & Chmielowiec, P. & Zyska, A. & Łągiewka, M. (2006). Fracture toughness examination of the aluminium matrix composite reinforced with chopped carbon fibres. Archives of Foundry Engineering. 6(18).
• [6] Hong, C.P. & Shen, H.F. & Lee, S.M. (2000). Prevention of macrodefects in squeeze casting of an Al-7wt pct Si alloy. Metallurgical and Materials. 31(B), 297-305. DOI: 10.1007/s11663-000-0048-5.
• [7] Zhou, G. & Ding, H. & Zhang, Hui Y. D. & Liu, A. (2009). Fretting behavior of nano-Al2O3 reinforced copper matrix composites prepared by coprecipitation. Metalurgija. 15(3). 169-179.
• [8] Chen, G. Sun, G-X. & Zhu, Z-G. (1999). Study on reaction-processed Al-Cu/alpha-Al2O3(p) composites. Materials Science and Engineering. 265(A), 197-201.
• [9] Kelly, A. M. & Bomford, M. J. (1971). The tensile strength of copper/tungsten fibre-reinforced composites. Fibre Science and Technology. 4(1), 1-8.
• [10] Ghasemi, H., Faghihi Sani, M.A., Kokabi A.H. & Riazi Z. Alumina-Copper Eutectic Bond Strength: Contribution of Preoxidation, Cuprous Oxides Particles and Pores, Transaction B: Mechanical Engineering. 16(3), 263-268.
• [11] Granat, K., Pietrzak, K., Grodzka, E., Naplocha K. & Kaczmar, J. (2011). Production and wear properties of copper based MMC strengthened with \delta-alumina fibres. Archives of Foundry Engineering. 1(2), 71-74.