Fabrication of copper-titanium powders prepared by mechanical alloying

Abstract

<span style="mso-bidi-font-size:9.0pt" lang="EN-GB">Mechanical alloying is an innovative method of fabricating bulk metallic glasses. Produced powders can be sintered by using one of the modern methods such as spark plasma sintering. <span style="mso-bidi-font-size:9.0pt;mso-fareast-language: PL" lang="EN-GB">Cu-based amorphous alloys have high strength, ductility, fracture toughness, fatigue strength and corrosion resistance. <span style="mso-bidi-font-size:9.0pt" lang="EN-GB">The aim of the present study is to fabricate, investigate and compare the structure, size and shape and microhardness of the Cu₅₀Ti₅₀powders depending of the milling time. Cu₅₀Ti₅₀ powders are prepared by mechanical alloying. Mechanical allyoing is carried out in a high energy ball mill SPEX 8000. The structures of nanocrystalline and amorphous alloy powders are examined by X-ray diffraction. Chemical composition, particle size and shape of the powders are tested by scanning electron microscopy. <span style="mso-bidi-font-size: 9.0pt;mso-ansi-language:EN" lang="EN">Microhardness<span style="mso-bidi-font-size:9.0pt;mso-ansi-language:EN" lang="EN"> <span style="mso-bidi-font-size:9.0pt;mso-ansi-language:EN" lang="EN">is<span style="mso-bidi-font-size:9.0pt;mso-ansi-language: EN" lang="EN"> <span style="mso-bidi-font-size: 9.0pt;mso-ansi-language:EN" lang="EN">measured by using Vickers<span style="mso-bidi-font-size:9.0pt;mso-ansi-language:EN" lang="EN"> hardness testing machine. <span style="mso-bidi-font-size:9.0pt" lang="EN-GB">The results demonstrated that amorphous Cu-Ti alloy can be prepared by mechanical alloying. The amorphous phase of Cu₅₀Ti₅₀has occurred after 8 h of milling.

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