Fabricated article

Abstract

A fabricated article includes a substrate and one or more turbulators formed on the substrate. Each of the one or more turbulators includes at least one root portion providing a concave transition between the substrate and the turbulator. In some embodiments, the fabricated article is formed by a turbulator fabrication process. The turbulator fabrication process includes concurrently directing the first fusion energy toward a first side of the turbulator material extending from the substrate and the second fusion energy toward a second side of the turbulator material opposite the first side and extending from the substrate. The directing of the first fusion energy and the second fusion energy shapes the first side of the turbulator material to have a first contour and the second side of the turbulator material to have a second contour, thereby forming the one or more turbulators on the substrate.

What is claimed is: 
     
         1 . A fabricated article, comprising:
 a substrate; and   one or more turbulators formed on the substrate;   wherein each of the one or more turbulators includes at least one root portion providing a concave transition between the substrate and the turbulator.   
     
     
         2 . The fabricated article of  claim 1 , wherein the at least one root portion forms at least a 90 degree angle between the substrate and the turbulator. 
     
     
         3 . The fabricated article of  claim 1 , wherein the at least one root portion is raised from the substrate to form at least a portion of the turbulator. 
     
     
         4 . The fabricated article of  claim 1 , wherein the substrate is a portion of a combustion liner. 
     
     
         5 . The fabricated article of  claim 4 , wherein at least one of the one or more turbulators extends around the combustion liner. 
     
     
         6 . The fabricated article of  claim 4 , wherein the one or more turbulators comprises a plurality of continuous linear turbulators on an exterior surface of the combustor liner. 
     
     
         7 . The fabricated article of  claim 1 , wherein each turbulator extends from the substrate with a first root portion of the at least one root portion proximal to the substrate providing the concave transition between the substrate and a first side of a convex region of the turbulator. 
     
     
         8 . The fabricated article of  claim 7 , wherein each turbulator extends from the substrate with a second root portion of the at least one root portion proximal to the substrate providing a concave transition between the substrate and a second side of the convex region of the turbulator. 
     
     
         9 . The fabricated article of  claim 8 , wherein the first root portion and the second root portion are raised from the substrate to form at least a portion of the convex region extending from the substrate. 
     
     
         10 . The fabricated article of  claim 9 , wherein the convex region is formed by a first fusion energy, the first concave portion is formed by a second fusion energy, and the second concave portion is formed by a third fusion energy. 
     
     
         11 . The fabricated article of  claim 1 , wherein the substrate is formed of a substrate material selected from the group consisting of a composite material, a ceramic matrix composite, a superalloy, a nickel-based alloy, an iron-based alloy, a cobalt-based alloy, and any combination thereof. 
     
     
         12 . The fabricated article of  claim 1 , wherein the one or more turbulators are formed of a turbulator material selected from the group consisting of ceramic matrix composite, a superalloy, a high temperature metal, or a combination thereof. 
     
     
         13 . The fabricated article of  claim 1 , wherein the concave transition forms a smooth shape having a radius up to about 1.27 mm. 
     
     
         14 . The fabricated article of  claim 1 , wherein the concave transition forms a smooth shape having a radius up to about 0.76 mm. 
     
     
         15 . A fabricated article comprising a substrate and one or more turbulators on the substrate, the fabricated article being formed by a turbulator fabrication process comprising:
 providing a system configured for concurrently directing a first fusion energy and a second fusion energy;   positioning a turbulator material on the substrate; and then   concurrently directing the first fusion energy toward a first side of the turbulator material extending from the substrate and the second fusion energy toward a second side of the turbulator material opposite the first side and extending from the substrate;   wherein the directing of the first fusion energy and the second fusion energy shapes the first side of the turbulator material to have a first contour and the second side of the turbulator material to have a second contour, thereby forming the one or more turbulators on the substrate.   
     
     
         16 . A fabricated article comprising a substrate and one or more turbulators on the substrate, the fabricated article being formed by a turbulator fabrication process comprising:
 providing a system configured for directing a first fusion energy and a second fusion energy;   positioning a turbulator material on the substrate; and   directing the first fusion energy and the second fusion energy toward the turbulator material and the substrate;   wherein the directing of the first fusion energy and the second fusion energy modifies the turbulator material forming the one or more turbulators on the substrate; and   wherein the turbulator extends from the substrate with a first root portion proximal to the substrate providing a concave transition between the substrate and a first side of a convex region of the turbulator.