METHODS OF FORMING METALLIC GLASS MULTILAYERS

摘要

The disclosure is directed to methods of forming metallic glass multilayers by depositing a liquid layer of a metallic glass forming alloy over a metallic glass layer, and to multilayered metallic glass articles produced using such methods.

主权项

1. A method of forming a metallic glass multilayer comprising depositing a molten layer of a metallic-glass forming alloy over a metallic glass layer,
where the thickness di and initial temperature Ti of the molten layer and the thickness do and initial temperature To of the metallic glass layer produce an interface temperature Ts that is at least as high as the glass transition temperature of the metallic glass Tg where the characteristic cooling rate of the molten layer given by αtπ2(Ti−Ts)/4di2, where αi=3×10−6 m2/s, is greater than the critical cooling rate of the metallic glass forming alloy, and where the characteristic time scale of the metallic glass layer following the deposition process given by 4do2/αoπ2, where αo=3×10−6 m2/s, is shorter than the time for the metallic glass to crystallize at the interface temperature Ts.