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Title: Cr-W-V bainitic/ferritic steel with improved strength and toughness and method of making

This work describes a high strength, high toughness bainitic/ferritic steel alloy comprising about 2.75% to 4.0% chromium, about 2.0% to 3.5% tungsten, about 0.10% to 0.30% vanadium, and about 0.1% to 0.15% carbon with the balance iron, wherein the percentages are by total weight of the composition, wherein the alloy having been heated to an austenitizing temperature and then cooled at a rate sufficient to produce carbide-free acicular bainite. 15 figures.
Inventors:
;
Issue Date:
OSTI Identifier:
7275722
Assignee:
Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States) PTO; EDB-94-088874
Patent Number(s):
US 5292384; A
Application Number:
PPN: US 7-914452
Contract Number:
AC05-84OR21400
Resource Relation:
Patent File Date: 17 Jul 1992
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Ma; FERRITIC STEELS; FABRICATION; MECHANICAL PROPERTIES; BAINITE; CHEMICAL COMPOSITION; RADIOACTIVITY; THERMONUCLEAR REACTOR MATERIALS; ALLOYS; IRON ALLOYS; IRON BASE ALLOYS; MATERIALS; STEELS; 360101* - Metals & Alloys- Preparation & Fabrication; 360103 - Metals & Alloys- Mechanical Properties; 700480 - Fusion Technology- Component Development; Materials Studies- (1992-)