Influence of Al₅FeSi Phases on the Cracking of Castings at Al-Si Alloys

• Autorzy: Hren I. , Svobodova J. , Michna Š.

Identyfikatory

DOI

10.24425/afe.2018.125180

• Języki publikacji: EN

Abstrakty

EN

The research described in this contribution is focused on fractographic analysis of the fracture area of newly developed eutectic silumin type AlSi9NiCuMg0.5 (AA 4032), which was developed and patented by a team of staff of the Faculty of Mechanical Engineering. The paper presents determination of the cause of casting cracks in operating conditions. Fractographic analysis of the fracture area, identification of the structure of the casting, identification of structural components on the surface of the fracture surface and chemical analysis of the material in the area of refraction were performed within the experiment. Al-Si alloys with high specific strength, low density, and good castability are widely used in pressure-molded components for the automotive and aerospace industries. The results shown that the inter-media phases Fe-Al and Fe-Si in aluminium alloys lead to breakage across the entire casting section and a crack that crossed the entire cross section, which was confirmed by EDS analysis.

Słowa kluczowe

EN

aluminium alloy; intermetallic phase; low pressure casting; alloy structure; iron contamination

PL

stop aluminium; faza międzymetaliczna; odlewanie niskociśnieniowe; struktura stopu; zanieczyszczenie żelazem

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 18, iss. 4
• Strony: 120--124
• Opis fizyczny: Bibliogr. 13 poz., rys., tab., wykr.

Twórcy

autor

Hren I.

• Faculty of Mechanical Engineering, Institute of Technology and Materials, University of J. E. Purkyně in Ústí nad Labem, Pasteurova 7, 400 96 Ústí nad Labem, Czech Republic

autor

Svobodova J.

• Faculty of Mechanical Engineering, Institute of Technology and Materials, University of J. E. Purkyně in Ústí nad Labem, Pasteurova 7, 400 96 Ústí nad Labem, Czech Republic

autor

Michna Š.

• Faculty of Mechanical Engineering, Institute of Technology and Materials, University of J. E. Purkyně in Ústí nad Labem, Pasteurova 7, 400 96 Ústí nad Labem, Czech Republic

Bibliografia

• [1] Michna, Š. et al. (2005). Encyclopedia of Aluminum. (1st ed.). Prešov. SR: Adin s. r. o. ISBN 80-89041-88-4. (in Czech).
• [2] Oniszuk, A., Rzadkosz, S., Wójcik, A. & Cieślak, W. (2007). Iron presence in the technology of Mg-Al casting. Archives of Foundry Engineering. 7(2), 19-24.
• [3] Bolibruchová, D., Tillová, E. (2005). Foundry alloys Al-Si. ŽU v Žiline – EDIS. ISBN 80-8070-485-6.
• [4] Górny, Z., Kluska Nawarecka, S. & Saja, K. (2013). The Effect of Toughening Combined with Microjet Cooling During Quenching (Solution Heat Treatment) of Calcium Carbide-modified CuAl10Fe4Ni4 Alloy on its Mechanical Properties. Archives of Foundry Engineering. 13(1), 29-32.
• [5] Mondolfo, L.F. (1979). Aluminium Alloys, Structure and Properties. Butterworths, London.
• [6] Romankiewicz, F. & Romankiewicz, R. (2006). The influence of modification for structure and morphology fractures of alloy AlSi132. Archives of Foundry. 6(22), 436-440. (in Polish).
• [7] Lipiński, T. (2011). Microstructure and Mechanical Properties of the AlSi13Mg1CuNi Alloy With Ecological Modifier. Manufacturing Technology. 11(11), 40-44. ISBN 1213-2489.
• [8] Lipiński, T. (2008). Improvement of mechanical properties of AlSi7Mg alloy with fast cooling homogenous modifier. Archives of Foundry Engineering. 8(1), 85-88.
• [9] Pastircak, R., Sladek, A. & Kucharcikova, E. (2015). The production of plaster molds with patternless process technology. Archives of Foundry Engineering. 15(2), 91-94.
• [10] Roskosz, S., Adamiec, J. & Blotnicki, M. (2007). Influence of delivery state quality on microstructure and mechanical properties of as cast AZ91 Mg alloy. Archives of Foundry Engineering. 7(1), 143-146.
• [11] Turzyński, J., Pytel, A., Pysz, S. & Żuczek, R. (2006). Improving casting quality through application of modern tools for designing and testing. Archives of Foundry Engineering. 6(18), 224-230.
• [12] Cais, J., Svobodova, J. & Stancekova, D. (2017). Modification of the AlSi7Mg0.3 alloy using antimony. Manufacturing Technology. 17(5), 685-690.
• [13] Dinnis, C., Taylor, J.A. & Dahle, A.K. (2005). As-cast morphology of iron-intermetalics in Al-Si foundry alloys. Scripta Materialia. 53(8), 955-958.

Uwagi

PL

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