Investigations of the Influence of the Zone of Chills on the Casting Made of AlSi7Mg Alloy with Various Wall Thicknesses

• Autorzy: Piękoś M. , Zych J.

Identyfikatory

DOI

10.24425/afe.2019.127106

• Języki publikacji: EN

Abstrakty

EN

The influence of the chill on the AlSi7Mg alloy properties after the heat treatment T6, was realised in the system of the horizontally cast plate of dimensions 160x240 mm and thickness of 10 and 15 m. The cooling course in individual casting zones was recorded, which allowed to determine the solidification rate. Castings were subjected to the heat treatment T6 process. Several properties of the alloy such as: hardness BHN, density, tensile strength UTS, elongation %E were determined. The microstructure images were presented and the structural SDAS parameter determined. The performed investigations as well as the analysis of the results allowed to determine the influence zone of the chill. The research shows that there is a certain dependence between the thickness of the casting wall and the influence zone of the chill, being not less than 2g, where g is the casting wall thickness. The next aim of successive investigations will be finding the confirmation that there is the dependence between the casting wall thickness and the influence zone of the chill for other thicknesses of walls. We would like to prove that this principle is of a universal character.

Słowa kluczowe

EN

mechanical properties; thermal characteristics; cooling rate; AlSi7Mg alloy; chill

PL

właściwości mechaniczne; charakterystyka termiczna; tempo schładzania; stop AlSi7Mg

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2019
• Tom: iss. 1
• Strony: 127--132
• Opis fizyczny: Bibliogr. 13 poz., rys., tab., wykr.

Twórcy

autor

Piękoś M.

• AGH University of Technology, Faculty of Foundry Engineering, Kraków

autor

Zych J.

• AGH University of Technology, Faculty of Foundry Engineering, Kraków

Bibliografia

• [1] Rzadkosz, S., Zych, J., Piękoś, M., Kozana, J., Garbacz-Klempka, A., Kolczyk, J. & Jamrozowicz, Ł. (2015). Influence of refining treatments on the properties of Al-Si alloys. Metalurgija. 54(1), 35-38.
• [2] Piękoś, M., Zych, J., Cieślak, W. (2017). Research the distance zone of chills the example of die - cast plates made of alloy AlSi7Mg, after heat treatment T6. In A. Garbacz-Klempka, J. Kozana, M. Piękoś (Eds.) Nauka i technologia: odlewnictwo metali nieżelaznych: XX międzynarodowa konferencja naukowo-techniczna odlewnictwa metali nieżelaznych (147-163). Kraków: Wydawnictwo Naukowe „Akapit” (in Polish).
• [3] Piekło, J. Garbacz-Klempka, A., Żuczek, R. & Małysza, M. (2019). Computational Modeling of Fracture Toughness of Al-Si and Al-Zn-Mg-Cu Alloys with Detected Porosity. Journal of Materials Engineering and Performance. DOI: 10.1007/s11665-019-03899-2
• [4] Kauffman, J.G., Rooy, E. L. (2005). Aluminum Alloy Castings. Ohio: ASM International.
• [5] Li, K.-D. & Chang, E. (2002). A Mechanism of Porosity Distribution in A356 Aluminum Alloy Castings. Materials Transactions. 43(7), 1711-1715.
• [6] Tiedje, N.S., Taylor, J.A. & Easton, M.A. (2013). A new multi-zone model for porosity distribution in Al–Si alloy castings. Acta Materialia. 61(8), 3037-3049.
• [7] Sabau, A.S. & Viswanathan, S. (2002) Microporosity prediction in aluminum alloy castings. Metallurgical and Materials Transactions B. 33(2), 243-255.
• [8] Shabani, M.O. & Mazahery, A. (2011). Prediction of Mechanical Properties of Cast A356 Alloy as a Function of Microstructure and Cooling Rate. Archives of Metallurgy and Materials. 56(3), 671-675. DOI: 10.2478/v10172-011-0073-1.
• [9] Bernat, Ł. & Hajkowski, M. (2008). Porosity estimation and size reduction structure of Al alloys castings using solidification criteria. Archiwum Technologii Maszyn i Automatyzacji. 28(1), 37-46.
• [10] Dobrzański, L.A., Maniara, R. & Sokolowski, J. (2006). The effect of cast Al-Si-Cu alloy solidification rate on alloy thermal characteristics. Journal of Achievements in Materials and Manufacturing Engineering. 17(1-2), 217-220.
• [11] Orłowicz, W., Tupaj, M. & Mróz, M. (2006). Effect of Cooling Rate on the Structure AlSi7Mg0,3 Alloy. Archiwum Odlewnictwa. 6(18), 125-130. (in Polish).
• [12] Sivarupan, Th., Caceres, C.H., & Taylor J.A. (2013). Alloy Composition and Dendrite Arm Spacing in Al-Si-Cu-Mg-Fe Alloys. Metallurgical and Materials Transactions A. 44(9), 4071-4080. DOI: 10.1007/s11661-013-1768-x.
• [13] Djurdjevič, M.B. & Grzinčič, M.A., (2012). The effect of major alloying elements on the size of the secondary dendrite arm spacing in the as-cast Al-Si-Cu alloys. Archives of Foundry Engineering. 12(1), 19-24.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).

PL

„This paper is an invited submission to Archives of Foundry Engineering selected from presentations at the 73rd World Foundry Congress, organized by the Polish Foundrymen’s Association on 23rd to 27th September 2018 in Krakow, Poland".