Structure and mechanical properties of Al-12%Si alloy with fast cooling Al-12%Si

• Autorzy: Lipiński T.
• Języki publikacji: EN

Abstrakty

EN

A homogenous modifier obtained by the rapid solidification at a cooling rate equal to v=300 K/s was applied to the modification of the Al-12%Si alloy. The different modifiers were obtained by means of the Al-Si alloys. The components Al-12%Si were put into crucible containing the liquid Al-12%Si alloy and kept for one minute to obtain a new homogenous alloy which after break-up was homogenous modifier. Both, effect of cooling rate applied to obtain modifier and weight in weight modifier concentration in the melt on structure, tensile strength, elongations and hardness of Al-12%Si alloy are determined. A structural, physical and mechanical properties resulting from the Al-12%Si alloy treatment by modifiers are studied in details.

Słowa kluczowe

EN

theory of crystallization; alloys Al; silumin; mechanical properties; structure

PL

teoria krystalizacji; stopy Al; silumin; właściwości mechaniczne; struktura

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2008
• Tom: Vol. 8, iss. 3s
• Strony: 51--54
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Lipiński T.

• University of Warmia and Mazury in Olsztyn, The Faculty of Technical Sciences Department of Materials Technology, St: Oczapowskiego 11, 10-957 Olsztyn, Poland

Bibliografia

• [1] Chaparro-Gonzales J. and other, Application of an ultrasound technique to control the modification of Al-Si alloys. Materials & Design 1 (1995).
• [2] F. Romankiewicz, Research of modification AlSi7Mg alloy with AlTi5B1 and AlSr10 additions. Surface Phenomenons at castings process. Poznań-Kołobrzeg (1994) (in Polish).
• [3] M. Djurdjevic, H. Jiang, J. Sokołowski, On-line predicition of aluminium-silicon eutectic modification level using thermal analysis. Materials Characterization 46 (2001).
• [4] J. Szajnar, T. Wróbel, Inoculation of pure aluminium aided by electromagnetic field. Archives of Foundry Engineering 8 (2008).
• [5] M. Hajkowski, Dependence of basic properties of crystaline structure of casus made of sub-eutectic Al-Si alloys. Archives of Foundry 1 (2001).
• [6] Garat, G. Laslaz, S. Jacobs, P. Meyer, State of the art. Use of Sb, Na, and Sr modified Al-Si casting alloys. AFS Trans. 146 (1992).
• [7] W. Orłowicz, M. Mróz, M. Tupaj, Effect of modification and mold temperature on mechanical properties of AlSi7Mg alloy. Archives of foundry vol. 6, Nr 18 (2006) (in Polish).
• [8] F. Romankiewicz, R. Romankiewicz, The influence of modification for structure and morphology fractures of alloy AlSi132. Archives of foundry vol. 6, Nr 22 (2006) (in Polish).
• [9] E. Olejnik, E. Fraś, A visualization of the eutectic solidification process. Archives of Foundry Engineering 7 (2007).
• [10] I. Nova, J. Exner, Z. Hosek, I. Novakova, Crystallization of Al-Si alloys in the course of high pressure die-casting. Archives of foundry vol.4, Nr14 (2004).
• [11] S. Borkowski, Quality controll of cast constructional materiale for example cast iron, WNT Warsaw (1999).
• [12] W. Wołczyński, Role of Physical Factors in Solid – Liquid Interface Formation during Oriented Eutectic Growth. Cryst. Res. Technol. 25 (1999).
• [13] Wołczyński W., Ciach R., Growth of undirectional eutectic binary alloys. Solidifications Technology in the foundry and cast house. The Metals Society (1980).
• [14] T. Lipinski, Influence exothermic mixture contains with Na2B4O7 and NaNO3 on tensile strength AlSi7Mg alloy, Archives of foundry vol. 6, nr 22 (2006).
• [15] H. Liao, Y. Sun, G. Sun, Correlation between mechanical properties and amount of dendritic α-Al phase in as-cast near-eutectic Al-11.6% Si alloys modified with strontium Journal of Materials Processing Technology A335 (2002).
• [16] T. Lipiński, Ekological modification AlSi7Mg alloy. Archives of foundry vol. 6, nr 18 (2006) (in Polish).
• [17] T. Lipiński, Improvement of mechanical properties of AlSi7Mg alloy with fast cooling homogenous modifier. Archives of Foundry Engineering 8 (2008).