Correlation of Hardness and Silicon Morphology for Al-Si-Sb Alloy

• Autorzy: Uzun O. , Yilmaz F. , Emeksiz C. , Ergen S. , Kolemen U.

Identyfikatory

DOI

10.24425/118963

• Języki publikacji: EN

Abstrakty

EN

In this study, we have focused on the role of silicon morphology on the hardness of eutectic Al–12 wt.% Si–0.5 wt.% Sb alloy solidified at different cooling rates. The alloys were produced by using induction melting, arc-remelting and melt-spinning techniques. The cooling rates of the alloys were determined as 0.5, 60 and ~10⁵°C.s^-1 for induction-melted, arc-remelted and meltspun alloy. The experimental results show that as the cooling rate increased the coarse silicon phase was substantially refined and its morphology altered from sharp need-like to round shape. Two exothermic peaks, attributed to precipitation and coarsening of silicon from supersaturated α-Al, were observed in the DSC curve of MS alloy. Vicker’s hardness of melt-spun alloy was found two times higher than those of IMed and ARed alloys. The lowest hardness of induction-melted alloy was ascribed to the lamellar morphology of silicon, yielding decohesive rupture. This result was confirmed by finite element analyzing.

Słowa kluczowe

EN

Al-Si alloy; casting; Vickers; finite element analysis

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2018
• Tom: Vol. 63, iss. 1
• Strony: 467--472
• Opis fizyczny: Bibliogr. 25 poz., rys.

Twórcy

autor

Uzun O.

• Bulent Ecevit University, Department of Metallurgical and Material Science Engineering, Zonguldak, Turkey

autor

Yilmaz F.

• Gaziosmanpasa University, Department of Physics, Faculty of Art and Science, 60240, Tokat, Turkey

autor

Emeksiz C.

• Gaziosmanpasa University, Department of Electrical Engineering, Faculty of Natural Sciences and Engineering, 60240, Tokat, Turkey

autor

Ergen S.

• Gaziosmanpasa University, Department of Physics, Faculty of Art and Science, 60240, Tokat, Turkey

autor

Kolemen U.

• Gaziosmanpasa University, Department of Physics, Faculty of Art and Science, 60240, Tokat, Turkey

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Uwagi

EN

1. This work was supported by Turkish State Planning Organization (DPT) (Project No: 2003K120510)

PL

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