Nano-composite stainless steel

US9080229B2 · kind B2 · utility

Assignee

• UT-BATTELLE, LLC · US

Inventors

• Ryan R. Dehoff · Knoxville, US
• Craig A. Blue · Knoxville, US
• William H. Peter · Knoxville, US
• Wei Chen · Lo Wu, CN
• Louis F. Aprigliano · Riva, US

Key dates

• Filing date: May 7, 2012
• Grant date: Jul 14, 2015
• Expiry date: Apr 22, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C45/02
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A composite stainless steel composition is composed essentially of, in terms of wt. % ranges: 25 to 28 Cr; 11 to 13 Ni; 7 to 8 W; 3.5 to 4 Mo; 3 to 3.5 B; 2 to 2.5 Mn; 1 to 1.5 Si; 0.3 to 1.7 C; up to 2 O; balance Fe. The composition has an austenitic matrix phase and a particulate, crystalline dispersed phase.