Classes of modal structured steel with static refinement and dynamic strengthening and method of making thereof

US8257512B1 · kind B1 · utility

Assignee

• The NanoSteel Company, Inc. · US

Inventors

• Daniel James Branagan · Iona, US
• Brian E. Meacham · Idaho Falls, US
• Jason K. Walleser · Idaho Falls, US
• Andrew T. Ball · Idaho Falls, US
• Grant G. Justice · Idaho Falls, US
• Brendan L. Nation · Albuquerque, US
• Sheng Cheng · Idaho Falls, US
• Alla V. Sergueeva · Idaho Falls, US

Key dates

• Filing date: Jan 20, 2012
• Grant date: Sep 4, 2012
• Expiry date: Jan 20, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21D2201/03
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present disclosure is directed at formulations and methods to provide new steel alloys having relatively high strength and ductility. The alloys may be provided in sheet or pressed form and characterized by their particular alloy chemistries and identifiable crystalline grain size morphology. The alloys are such that they include boride grains present as pinning phases. Mechanical properties of the alloys in what is termed a Class 1 Steel indicate yield strengths of 300 MPa to 840 MPa, tensile strengths of 630 to 1100 MPa and elongations of 10% to 40%. In what is termed a Class 2 steel, the alloys indicate yield strengths of 300 MPa to 1300 MPa, tensile strengths of 720 MPa to 1580 MPa and elongations of 5% to 35%.