Effect of overheating degree on the solidification parameters of AlSi17CuNiMg silumin

• Autorzy: Piątkowski J.
• Języki publikacji: EN

Abstrakty

EN

Melting technology, especially the temperature of overheating and pouring above the liquidus point T_liq as well as the cooling rate, determine alloy macro - and microstructure, and hence also casting performance properties. These parameters affect the solidification process and the formation of shrinkage cavities and porosity. So, it is important to choose the best parameters of the melting and pouring process, since on these parameters the process of crystal nucleation and growth as well as shaping of the alloy primary structure will depend. Hence it follows that the time-temperature treatment of molten alloys, hypereutectic silumins included, will also affect the solidification process. Therefore it is fully justified to examine in extenso the effect of overheating degree on parameters of the hypereutectic silumin solidification (T_liq, T_E, T_sol) and temperature of complex eutectic crystallisation (due to additions of Cu, Ni and Mg), the more that these effects have not been so far fully investigated and understood.

Słowa kluczowe

EN

solidification process; modification; hypereutectic silumins

PL

krzepnięcie; proces krzepnięcia; modyfikacja; silumin nadeutektyczny

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 2
• Strony: 103--106
• Opis fizyczny: Bibliogr. 5 poz., fot., rys., tab., wykr.

Twórcy

autor

Piątkowski J.

• Silesian University of Technology, Chair of Materials Technology, Krasińskiego 8, 40-019 Katowice, Poland

Bibliografia

• [1] Chen HongSheng, ZU FangQiu, Chen Jie, Zou Li, Ding GuoHua & Huang ZhongYue: The effect of melt overheating on the melt structure transition and solidified structures of Sn-Bi40 alloy. Sci China Ser E-Tech Sci. 2008, vol. 51 no. 9, p. 1402-1408.
• [2] Peijie Li, V. I. Nikitin, E. G. Kandalova and K. V. Nikitin: Effect of melt overheating, cooling and solidification rates on Al–16wt.% Si alloy structure. Materials Science and Engineering A Vol. 332, iss. 1-2, July 2002, p. 371-374.
• [3] Jun Wang, Shuxian He, Baode Sun, Qixin Guo and Mitsuhiro Nishio: Grain refinement of Al–Si alloy (A356) by melt thermal treatment. Journal of Materials Processing Technology vol. 141, Issue 1, 1 October 2003, p. 29-34.
• [4] Li Wang, Xiufang Bian and Jiantong Liu: Discontinuous structural phase transition of liquid metal and alloys. Physics Letters A Vol. 326, iss. 5-6, 14 June 2004, p. 429-435.
• [5] Weimin Wang, Xiufang Bian, Jingyu Qin, S.I. Syliusarenko: The Atomic-Structure Changes in Al-16 Pct Si Alloy above the Liquidus. Metallurgical And Materials Transactions A vol. 31A, September, p. 2000-2163.