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Influence of Modifications on Fatigue Strength of AlSi17Cu5Mg(Fe) Alloy Used for Pistons for Internal Combustion Engines

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Języki publikacji
EN
Abstrakty
EN
Technological progress in construction of automotive vehicles, particularly in construction of engines, enforces simultaneous changes in foundry properties of aluminum alloys used in automotive industry. Until recently, abrasion resistance was the main usability criterion of a material used for pistons for internal combustion engines. At present however, because of the complexity of the process of the fuel mixture combustion, more restrictive standards of limited hydrocarbon emission, and the pursuit of reduction of the vehicle’s mass, fatigue strength of silumins enjoys a continuously increasing interest. The paper presents results of a computer simulation using the finite element method (FEM) and a real fatigue test of AlSi17Cu5Mg(0.5Fe) (A390.0) alloy with unilateral variable bending. The tests aimed to simulate a deflection of a combustion engine piston in a cylinder barrel were carried out in two variants: for a non-modified alloy and an alloy modified with CuP10 master alloy. Based on the distribution of stresses according to the Huber-Mises-Hencky theory (for a given range of the deflection from 0.1 to 0.3 mm), Wöhler curve was determined for the studied alloy. Based on on microstructural investigations, cracks of primary Si crystals were found, caused by fatigue changes resulting from unilateral pulsating vibrations.
Twórcy
  • Silesian University of Technology, Institue of Metals Technology, 8 Krasińskiego Str., 40-019 Katowice, Poland
autor
  • Silesian University of Technology, Faculty of Transport, 8 Krasińskiego Str., 40-019 Katowice, Poland
Bibliografia
  • [1] S. Pietrowski, Crystallization, structure and properties of piston alloys, 1999 Technical University of Łódź.
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  • [4] E. Fraś, Crystallization of metals, 2003 WNT, Warszawa.
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  • [6] Z. Górny, Casting of non-ferrous alloys, 1992 WNT, Warszawa.
  • [7] Z. Górny, J. Sobczak, Modern materiale foundry-based non-ferrous metals, 2005 Publisher ZA-PIS, Kraków.
  • [8] Z. Poniewierski, Crystallization, structure and properties of silumines, 1989 WNT, Warszawa.
  • [9] R. Cook, Modification of aluminum-silicon foundry alloys, 1998 London and Scandinavian Metallurgical Co. Limited.
  • [10] J. Piątkowski, F. Binczyk, Acta Metallurgia Slovaca 10 (3), 87-92 (2003).
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  • [16] R. Ghelichi, S. Bagherifard, D. MacDonald, M. Brochu, H. Jahed, B. Hodoin, M. Guagliano, Inter. J. of Fatigue. 65, 51-57 (2014).
  • [17] T. Haniszewski, Transport Problems 9, 19-26 (2014).
  • [18] O. Carvalho, M. Buciumeanu, S. Madeira, D. Soares, F.S. Silva, G. Miranda, Materials and Design 80, 163-173 (2015).
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  • [20] R. Wieszała, J. Piątkowski, Archives of Foundry Engineering 15 (3), 99-103 (2015).
  • [21] T. Haniszewski, The influence of the modification of AlSi17Cu5 cast alloy of CuP master alloy on the mechanical properties. Grant MNiSW/IBM_BC_HS21/Silesian Technical University/012/2015.
  • [22] F. S. Silva, Engineering Failure Analysis 13, 480-492 (2006).
Uwagi
PL
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-eac235bf-0f5b-4f53-906a-6167a0798978
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