Mechanism of structural formation for metallic glass based composites with enhanced ductility

摘要

An aspect of the present disclosure relates to an alloy composition, which may include 52 atomic percent to 68 atomic percent iron, 13 to 21 atomic percent nickel, 2 to 12 atomic percent cobalt, 10 to 19 atomic percent boron, optionally 1 to 5 atomic percent carbon, and optionally 0.3 to 16 atomic percent silicon. The alloy may include 5 to 95% by volume of one or more spinodal microconstituents, wherein the microconstituents exhibit a length scale less than 50 nm in a glass matrix.

主权项

1. A method of forming spinodal microconstituents in an alloy comprising:
melting alloy constituents including 52 atomic percent to 60 atomic percent iron, 15.5 to 21 atomic percent nickel, 6.3 to 11.6 atomic percent cobalt, 10.3 to 13.2 atomic percent boron, 3.7 to 4.8 atomic percent carbon, and 0.3 to 0.5 atomic percent silicon to form an alloy; cooling said alloy; and forming one or more spinodal microconstituents in a glass matrix through spinodal decomposition wherein said alloy separates into distinct regions with different chemical compositions and physical properties and is not nucleation controlled, wherein said spinodal microconstituents are present in the range of 5% to 95% by volume and said spinodal microconstituents exhibit a length scale less than 50 nm in a glass matrix.