The influence of electrical current on Al-Si alloys crystallization

• Autorzy: Száraz A. , Pastričák R. , Sládek A.
• Języki publikacji: EN

Abstrakty

EN

This paper handles about the effect of electrical current on the cast microstructure of Al-Si alloy. By the application of direct current during the solidification there is intended the refinement of result microstructure. The change of result microstructure and mechanical properties was investigated. By the application of direct and alternating electrical current during the Al-Si alloy solidification there were observed some changes in the microstructure. The dendrites size in primary alpha phase was not been change markedly by the affect of electrical current. There was studied the size change of eutectic silicon on the samples. Eutectic silicon in the influenced sample is the same as eutectic silicon without electrical current application, only its length is shorter. Electromagnetical force activated by the transmission of electrical current flows into the increase of activating energy at the diffusion of silicon atoms and the silicon content inside the grains will be increased. By the application of electrical impulses of direct current the forces are influencing the hardening melt, which character is different as by the application of static electrical current.

Słowa kluczowe

EN

Al-Si alloy; crystallization; electrical current

PL

stop Al-Si; krystalizacja; prąd elektryczny

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2008
• Tom: Vol. 8, iss. 2
• Strony: 133--136
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Száraz A.

autor

Pastričák R.

autor

Sládek A.

• Department of Technological Engineering, SjF ŽU in Žilina, Univerzitná 1, 010 26 Žilina Slovak Republic

Bibliografia

• [1] M. Murgaš, Nekonvenčné metódy ovplyvövania kryštalizácie, Cyklus vzdelávania Nové zlievarenské technológie, Rajecké Teplice, 1999, s. 101-117.
• [2] Xu G. Et all, Effect of electric current on the cast microstructure of Al-Si alloy, China Foundry, 2, 2005, č. 3, s. 171 - 175.
• [3] H. Conrad, Influence of an electric or magnetic field on the liquid-solid transformation in materials and on the microstructure of the solid [J]. Materilas Science and Enginnering, 2000, A287: 205-212.
• [4] S. L. Timčejko, N. A. Zaborožnyj, Vlijanije električeskogo toga na kristallizaciju aluminijebogo splava, Litejnoje proizvodstvo, 2005, č. 9, s. 12 - 13. ISSN 0022-0248.
• [5] J. Martinková, L. Bechný, A. Sládek, Využitie nekonvenčných metód pri tuhnutí hliníkových zliatin, V. Medzinárodné metalurgické symposium, Rajecké Teplice, 1999, s. 186 - 191.
• [6] P. Fabian, E. Kečková, P. Beták. Tepelné spracovanie. Vydala Žilinská univerzita v Žiline, 2007, 1. vydanie, s. 114. ISBN 978 - 80 - 969592 - 7 - 3.