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Abstract

A method for making alloy strip by continuous casting with tensile strength of at least 900 MPa and total elongation of at least 30%, strip with tensile strength of at least 1200 MPa and total elongation of at least 20%, or strip with tensile strength of at least 1500 MPa and total elongation of at least 15%. Molten metal is introduced forming a casting pool supported on the casting rolls and counter-rotating the A heat flux is provided with a peak heat flux >20 Mw/m2. The strip is cooled at 1000-3000 K/sec. A roll biasing force >40 kN/meter of casting roll length is applied to form thin metal strip. The strip is then conveyed through a first enclosure with an atmosphere having an oxygen content of <5%. The cast strip is rolled through a rolling mill and reduced and modification of the microstructure is initiated.

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First Claim