Vacuumschmelze Gmbh & Company Kg

Mie Marsilius

Giselher Herzer

Christian Polak

A metal strip is provided having a casting-wheel side that has been solidified on an outer surface of a heat sink, an opposing, air side and a microstructure. The microstructure is at least 80 vol. % amorphous or has at least 80 vol. % nanocrystalline grains and a residual amorphous matrix in which at least 80% of the nanocrystalline grains have an average grain size of less than 50 nm and a random orientation. The air side of the metal strip has a surface crystallisation proportion of less than 23%.

Metal strip, method for producing an amorphous metal strip and method for producing a nanocrystalline metal strip

An alloy of FeCuNbMTSiBZand up to 1 atomic % impurities; M is one or more of Mo or Ta, T is one or more of V, Cr, Co or Ni and Z is one or more of C, P or Ge, wherein 0.0 atomic %&#x2264;a&#x3c;1.5 atomic %, 0.0 atomic %&#x2264;b&#x3c;3.0 atomic %, 0.2 atomic %&#x2264;c&#x2264;4.0 atomic %, 0.0 atomic %&#x2264;d&#x3c;5.0 atomic %, 12.0 atomic %&#x3c;x&#x3c;18.0 atomic %, 5.0 atomic %&#x3c;y&#x3c;12.0 atomic % and 0.0 atomic %&#x2264;z&#x3c;2.0 atomic %, and wherein 2.0 atomic %&#x2264;(b+c)&#x2264;4.0 atomic %, produced in the form of a strip and having a nanocrystalline structure in which at least 50% by volume of the grains have an average size of less than 100 nm, a remanence ratio J/J&#x3c;0.02, Jbeing the remanent polarization and Jbeing the saturation polarization, and a coercitive field strength Hwhich is less than 1% of the anisotropic field strength Hand/or less than 10 A/m.

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Munich, Georgia

Mie Marsilius