Study of Mechanical Properties and Precipitation Reactions in Low Copper Containing Al-Mg-Si Alloy

• Autorzy: Belghit H. , Farh H. , Ziar T. , Zidani M. , Guemini M.

Identyfikatory

DOI

10.24425/amm.2018.125088

• Języki publikacji: EN

Abstrakty

EN

The scope of this work is to investigate the precipitation of two Al-Mg-Si alloys with and without Cu and excess Si by using the differential scanning calorimetry (DSC), transmission electron microscopic (TEM), Vickers hardness measurement and X-ray diffraction. The analysis of the DSC curves found that the excess Si accelerate the precipitation and the alloy contain the excess Si and small addition of copper has higher aging-hardness than that of free alloy (without excess Si and Cu) at the same heat treatment condition. The sufficient holding time for the precipitation of the β'' phase was estimated to be 6 hours for the alloy aged at 100°C and 10 hours for the alloy aged at 180°C. The low Copper containing Al-Mg-Si alloy gives rise to the forming a finer distribution of β (Mg₂Si) precipitates which increases the hardness of the alloy. In order to know more about the precipitation reactions, concern the peaks on the DSC curve transmission electron microscopy observation were made on samples annealed at temperatures (250°C, 290°C and 400°C) just above the corresponding peaks of the three phases β'', β' and β respectively.

Słowa kluczowe

EN

Al-Mg-Si alloys; precipitation; DSC; TEM; excess Si; copper

• 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. 4
• Strony: 1643--1648
• Opis fizyczny: Bibliogr. 31 poz., fot., rys., tab.

Twórcy

autor

Belghit H.

• University of Tébessa, Faculty of Exact Sciences, Department of Material Sciences, 12002, Algeria
• University of Oum El Bouaghi, Faculty of Exact Sciences, Department of Material Sciences, Bouaghi 04000, Algeria

autor

Farh H.

• University of Tébessa, Faculty of Exact Sciences, Department of Material Sciences, 12002, Algeria

autor

Ziar T.

• University of Tébessa, Faculty of Exact Sciences, Department of Material Sciences, 12002, Algeria

autor

Zidani M.

• Université De Biskra, Laboratoire De Génie Energétique Et Matériaux (LGEM), B.P: 145 Biskra, 07000 Algérie

autor

Guemini M.

• University of Oum El Bouaghi, Faculty of Exact Sciences, Department of Material Sciences, Bouaghi 04000, Algeria

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Uwagi

PL

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