Formation and properties of the Zr75−xAlxNi10Cu10Ti5 bulk metallic glasses |
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Authors: | J Latuch P Krzesniak T Kulik |
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Affiliation: | aFaculty of Materials Science and Engineering, Warsaw University of Technology, Woloska Str. 141, PL-02-507 Warsaw, Poland |
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Abstract: | Zr-based bulk metallic glasses (BMGs) exhibit interesting mechanical properties since they combine high fracture stress, elastic strain (up to 2%), significant fracture toughness and good corrosion resistance. Quaternary systems with general composition Zr–Ni–Cu–Ti show wide composition ranges in which BMG can be obtained. The addition of the another element to the quaternary alloys often increases the glass forming ability (GFA). The aim of this work was to study the influence of aluminium content on the GFA and on the mechanical properties of the Zr–Ni–Cu–Ti alloys. Multicomponent Zr75−xAlxNi10Cu10Ti5 (x = 15, 20 at%) alloys were produced by melt spinning method obtaining ribbons, and by casting technique into a copper mould, manufacturing rod shape samples with maximum diameter of 2 mm. Supercooled liquid region depends on chemical composition and exceeds 45 °C. Vickers microhardness of studied alloys is comparable to the highest ones for other Zr-based BMG. |
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Keywords: | Amorphous materials Mechanical properties Crystallization |
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