Method of making non-stainless steels with high strength and high ductility

US8641840B2 · kind B2 · 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: Apr 16, 2013
• Grant date: Feb 4, 2014
• Expiry date: Apr 16, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C38/54
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present disclosure is directed and formulations and methods to provide non-stainless steel alloys having relative 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 pinning phases. In what is termed a Class 1 Steel the alloys indicate tensile strengths of 630 MPa to 1100 MPa and elongations of 10-40%. Class 2 Steel indicates tensile strengths of 875 MPa to 1590 MPa and elongations of 5-30%. Class 3 Steel indicates tensile strengths of 1000 MPa to 1750 MPa and elongations of 0.5-15%.