Impact of Various Types of Heat Treatment on Mechanical Properties of the EN AC-AlSi6Cu4 Alloy

• Autorzy: Jarco A. , Pezda J.
• Języki publikacji: EN

Abstrakty

EN

The Al-Si-Cu alloys with content of the copper from 2 to 4 percent, after solutioning and artificial ageing treatments (T6 heat treatment), feature high strength and very high hardness, however their elongation is considerably reduced. Maintaining value of elongation on the level of initial alloy is possible due to homogenizing treatment performed prior the T6 treatment. Performed strength tests of the initial alloy and the alloy after individual types of the heat treatment enable comparison of obtained results and assessment of usability of the investigated alloy to production of a castings. Test pieces to the strength tests were poured in standardized metal moulds. Parameters of the heat treatment, temperature and duration of heating were established on base of the literature and the ATD diagram performed for the investigated alloy. Investigated EN AC-AlSi6Cu4 alloy after homogenizing treatment becomes plastic, its elongation A₅ and its impact strength KC increase nearly three times, with slight decrease of the tensile strength R_m. Dispersion hardening in connection with the homogenizing treatment results in increase of the tensile strength R_m with 68%, hardness and impact strength with 40% with elongation at level of the alloy without heat treatment. Making suitable selection of various types of the heat treatment it is possible, depending on needs, to control mechanical properties of the alloy.

Słowa kluczowe

EN

heat treatment; aluminum alloy; ATD method; elongation; tensile strength

PL

obróbka cieplna; stop aluminium; metoda ATD; wydłużenie; wytrzymałość na rozciąganie

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2015
• Tom: Vol. 15, iss. 2 spec.
• Strony: 35--38
• Opis fizyczny: Bibliogr. 20 poz., rys., tab., wykr.

Twórcy

autor

Jarco A.

• Department of Production Engineering and Automation, University of Bielsko-Biała, Willowa 2, 43- 300 Bielsko-Biała, Poland

autor

Pezda J.

• Department of Production Engineering and Automation, University of Bielsko-Biała, Willowa 2, 43- 300 Bielsko-Biała, Poland

Bibliografia

• [1] Dobrzański, L.A. (2006). Engineering materials and materials design. Warszawa: WNT. (in Polish).
• [2] Pezda, J. (2014). Effect of selected parameters of the heat treatment operations on technological quality of machinery components pored from silumins. Bielsko-Biała: Scientific Publishers ATH. (in Polish).
• [3] Wasilewski, P. (1993). Silumins - Modification and its impact on structure and properties. Katowice. PAN Solidification of metals and alloys. 21, Monography. (in Polish).
• [4] Szymczak, T., Gumienny, G., Pacyniak, T. (2015). Effect of Sr and Sb Modification on the Microstructure and Mechanical Properties of 226 Silumin Pressure Casts. Archives of Foundry Engineering. 15(1), 105-108.
• [5] Zyska, A., Konopka, Z. & Cisowska, M. (2004). Investigation of the solidification process of the modified AlSi6Cu4 alloy. Archives of Foundry. 4(11), 317-325. (in Polish).
• [6] Pezda, J. (2014). Effect of Shortened Heat Treatment on the Hardness and Microstructure of 320.0 Aluminium Alloy. Archives of Foundry Engineering. 14(2), 27-30.
• [7] Domke, W. (1989). Vademecum of materials. Warszawa: WNT. (in Polish).
• [8] Orłowicz, W., Mróz, M. & Tupaj, M. (2006). Selecting of heat treatment parameters for AlSi7Mg0,3 alloy. Archives of Foundry. 6(22), 350-357. (in Polish).
• [9] Dobrzański, L. A., Reimann, L. & Krawczyk, G. (2008). Influence of the ageing on mechanical properties of the aluminium alloy AlSi9Mg. Archives of Materials Science and Engineering. 31(1), 37-40.
• [10] Gauthier, J., Louchez, P. & Samuel, F. H. (1994). Heat treatment of 319.2 Al automotive alloy: Part 1, Solution Heat Treatment. Cast Metals. 8(2), 91-106.
• [11] Mohamed, A. M. A., Samuel, F.H. (2012). A review on the heat treatment of Al-Si-Cu/Mg casting alloys. Czerwinski F. (Eds.). Heat Treatment - Conventional and Novel Applications (pp. 55-72). InTech. DOI: 10.5772/50282.
• [12] Górny, Z. (1992). Casting non-ferrous alloys. Warszawa: WNT. (in Polish).
• [13] Zolotorevsky, V. S., Belov, N. A., Glazoff, M. V. (2007). Casting Aluminium Alloys. Oxford: Elsevier.
• [14] Pezda, J. (2010). Effect of heat treatment operations on the Rm tensile strength of silumins. Archives of Foundry Engineering. 10(4), 61-64.
• [15] Medlen, D. & Bolibruchova, D. (2012). The Influence of Remelting on the Properties of AlSi6Cu4 Alloy Modified by Antimony. Archives of Foundry Engineering. 12(1), 81-86.
• [16] Kliemt, C., Wilhelm, F., Hammer, J. (2014). Lifetime Improvement of AlSi6Cu4 Cylinder Head Alloy. Advanced Materials Research, 891-892, 1627-1632. DOI: 10.4028/www.scientific.net/AMR.891-892.1627.
• [17] Davis, J. R. (1993). Aluminium and aluminium alloys. ASM Speciality Handbook, ASM International.
• [18] Jabłoński, S. (1971). Heat treater small guide-book. Warszawa: WNT. (in Polish).
• [19] Poniewierski, Z. (1989). Crystallization, structure and properties of silumins. Warszawa: WNT. (in Polish).
• [20] Niezgodziński, M.E., Niezgodziński, T. (2010). Strength of materials. Warszawa: WNT. (in Polish).