Regensburg 2010 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 35: Liquid and Amorphous Metals II

MM 35.2: Vortrag

Mittwoch, 24. März 2010, 11:45–12:00, H5

Glass forming ability of iron based amorphous alloys depending on Mo, Cr and Co content — •Uwe Siegel, Uta Kühn, and Jürgen Eckert — IFW Dresden, PF 27 01 16, D-01171 Dresden

The Fe41Co7Cr15Mo14C15B6Y2 multicomponent Fe-based alloy is known to be one of the best glass formers in iron-based systems and shows a critical casting thickness of 16 mm [1]. The elements constituting the alloy have different influences on the glass forming ability. Therefore, the content of Mo, Cr and Co was systematically changed in the master alloy Fe77-x(Co,Cr,Mo)xC15B6Y2 to investigate how these three elements support the glassy microstructure. It was found that a certain content of Mo, Cr, and Co leads to a microstructure of amorphous matrix and alpha-Fe precipitates without any carbides.

[1] Shen, J., Chen, Q. J., Sun, J. F., Fan, H. B. & Wang, G. Exceptionally high glass-forming ability of an FeCoCrMoCBY alloy. Applied Physics Letters 86, (2005).