Preparation and glass-forming ability of Mg-based bulk amorphous alloys

• Autorzy: Babilas R. , Zajączkowski A. , Głuchowski W. , Nowosielski R.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The work presents preparation methods, structure characterization and glass-forming analysis of Mg-based bulk metallic glasses in as-cast state. Design/methodology/approach: The studies were performed on Mg60Cu30Y10 and Mg60Cu29Y10Si1 glassy alloys in the form of plates and rods. The amorphous structure of tested samples was examined by X-ray diffraction (XRD). The thermal properties associated with solidus and liquidus temperature of master alloys were measured using the differential thermal analysis (DTA). The crystallization behavior of the studied plates and rods was also examined by differential scanning calorimetry (DSC). The fracture morphology of the rods in as-cast state was analyzed using the scanning electron microscopy (SEM). Findings: The X-ray diffraction investigations revealed that the tested samples with different thickness and shape were amorphous. The single exothermic peaks describing crystallization process of studied alloys were observed for all examined samples with different thickness. The endothermic and exothermic peaks observed on DTA curves of master alloys allowed to determine the solidus and liquidus temperatures. The characteristics of the fractured surfaces showed different zones, which might correspond with different amorphous structures. The changes of glass transition and crystallization temperatures as a function of sample thickness were stated. Practical implications: The pressure die casting method are useful technique to fabricate bulk amorphous materials in the form of plates and rods. Proposed casting technology could open new possibilities to easier preparation of Mg-based nanostructured materials and forming their properties that is essential for further applications. Originality/value: The Mg-based bulk amorphous alloys are regarded as promising engineering materials with high strength, low density and good corrosion resistance in contrast to the crystalline alloys, due to their different atomic configurations

Słowa kluczowe

EN

amorphous material; bulk metallic glass; Mg-based alloy; glass-forming ability

PL

materiał amorficzny; masywne szkło metaliczne; stop na osnowie Mg; podatność na zeszklenie

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2013
• Tom: Vol. 62, nr 2
• Strony: 78--86
• Opis fizyczny: Bibliogr. 42 poz.

Twórcy

autor

Babilas R.

• Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-200 Gliwice, Poland

autor

Zajączkowski A.

• Institute of Non-Ferrous Metals, ul. Sowińskiego 5, 44-100 Gliwice, Poland

autor

Głuchowski W.

• Institute of Non-Ferrous Metals, ul. Sowińskiego 5, 44-100 Gliwice, Poland

autor

Nowosielski R.

• Institute of Non-Ferrous Metals, ul. Sowińskiego 5, 44-100 Gliwice, Poland

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