Utilization of heat treatment aimed to spheroidization of eutectic silicon for silumin castings produced by squeeze casting

• Autorzy: Vanko B. , Stanček L.
• Języki publikacji: EN

Abstrakty

EN

This paper describes the possibility of using very short periods of solution annealing in the heat treatment of unmodified hypoeutectic silumin alloy AlSi7Mg0,3 casted by method of casting with crystallization under pressure with forced convection (direct squeeze casting process). Castings prepared at different casting parameters were subjected to special heat treatment called SST (Silicon Spheroidization Treatment), which were originally used only for the modified silumin alloys to spheroidization of eutectic silicon. Temperature holding time in solution annealing of T6 heat treatment is limited in the SST process to only a few minutes. It was studied the effect of casting parameters and periods of solution annealing on ultimate strength, yield strength, and especially ductility that in the unmodified silumin alloy castings is relatively low.

Słowa kluczowe

EN

heat treatment; silicon spheroidization treatment; direct squeeze casting; hypoeutectic aluminium alloy

PL

obróbka cieplna; prasowanie stopu; stop aluminium

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2012
• Tom: Vol. 12, iss. 1
• Strony: 111--114
• Opis fizyczny: Bibliogr. 7 poz., rys., tab.

Twórcy

autor

Vanko B.

autor

Stanček L.

• Institute of Technologies and Materials, Faculty of Mechanical Engineering, Slovak University of Technology in Bratislava, Námestie Slobody 17, 812 31 Bratislava, Slovakia,

Bibliografia

• [1] Woehrer, J., Luechinger, H. (2003). Thixoforming - Premium Components Made From Aluminum Alloys by the Billet Route. Die Casting Engineer. September 2003, 110-116.
• [2] Wendinger, B., Luechinger, H. (2004). Thixoforming - Serial Parts and New Opportunities for High Ductile Application. In Proceedings of the 8th International Conference on Semi-Solid Processing of Alloys and Composites S2P 2004, September 21-23. Limassol, Cyprus.
• [3] Batyšev, A. I. (1990). Crystalization of Metals and Alloys Under Pressure. Metallurgija. (in Russian).
• [4] Stanček, L. (1990). Influence of Aluminum Alloys Solidification by Pressure. Final Report of the Subtask in National Plan of Basic Research No. III-I-4-02-06. Bratislava. (in Slovak).
• [5] Stanček, L. & Vanko, B. (2007). Instrument for Casting with Crystallization Under Pressure with Increasing of Flow Intensity. In 10th International Conference Technology 2007, 19-20 September 2007. Bratislava. (in Slovak).
• [6] Chai, G. & Bäckerud, L. (1992). Some Factors Affecting the Modification of Aluminium Silicon Alloys by Addition of Strontium Containing Master Alloys. AFS Transaction's Society. 100, 92-194.
• [7] NADCA Product Specification Standards for Die Castings Produced by the Semi-Solid and Squeeze Casting Processes. (1999). NADCA Publication 403. (2nd ed.). Rosemont, Illinois.