Formation, properties and microstructure of amorphous/crystalline composite Ag20Cu30Ti50 alloy using miscibility gap
作者： Krzysztof Ziewiec , Zbigniew Kędzierski , Anna Zielińska-Lipiec , Janusz Stępiński , Sławomir Kąc
DOI: 10.1016/J.JALLCOM.2009.04.049
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摘要: Abstract The aim of the work was to produce amorphous/crystalline composite with uniform distribution fine crystalline soft phase. Silver–copper–titanium Ag 20 Cu 30 Ti 50 alloy prepared using 99.95 wt% Ag, Cu, that were arc-melted in argon atmosphere. Then melt spun on a copper wheel linear velocity 33 m/s. Investigation microstructure for both arc-melt massive sample and melt-spun ribbons performed use scanning electron microscope (SEM) EDS, light (LM) X-ray diffraction. thermal stability evaluated by differential calorimetry (DSC). properties such as Young modulus Vickers hardness number before after crystallization amorphous matrix measured nanoindenter. investigated transmission (TEM). It found, has tendency separation within liquid state due miscibility gap which resulted segregation into Ti–Cu–Ag Ag-base spherical particles arc-melting. During rapid cooling through spinning formed an fcc silver-rich matrix.
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