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In-situ composite formation of damage tolerant coatings utilizing laser

United States Patent

May 10, 2011
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
A coating steel component with a pattern of an iron based matrix with crystalline particles metallurgically bound to the surface of a steel substrate for use as disc cutters or other components with one or more abrading surfaces that can experience significant abrasive wear, high point loads, and large shear stresses during use. The coated component contains a pattern of features in the shape of freckles or stripes that are laser formed and fused to the steel substrate. The features can display an inner core that is harder than the steel substrate but generally softer than the matrix surrounding the core, providing toughness and wear resistance to the features. The features result from processing an amorphous alloy where the resulting matrix can be amorphous, partially devitrified or fully devitrified.
Blue; Craig A. (Knoxville, TN), Wong; Frank (Livermore, CA), Aprigliano; Louis F. (Berlin, MD), Engleman; Peter G. (Knoxville, TN), Peter; William H. (Knoxville, TN), Rozgonyi; Tibor G (Golden, CO), Ozdemir; Levent (Golden, CO)
UT-Battelle, LLC (Oak Ridge, TN)
11/ 671,697
February 6, 2007
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT The United States Government has rights in this invention pursuant to contract no. DE-AC05-000R22725 between the United States Department of Energy and UT-Battelle, LLC.