US 11,969,796 B2
Tuned multilayered material systems and methods for manufacturing
Ali Yousefiani, Tustin, CA (US)
Assigned to The Boeing Company, Arlington, VA (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Jan. 3, 2020, as Appl. No. 16/733,390.
Prior Publication US 2021/0205883 A1, Jul. 8, 2021
Int. Cl. B22F 3/11 (2006.01); B22F 3/24 (2006.01); B22F 7/00 (2006.01); B22F 7/02 (2006.01)
CPC B22F 3/1112 (2013.01) [B22F 3/24 (2013.01); B22F 7/004 (2013.01); B22F 7/02 (2013.01); B22F 2003/242 (2013.01); B22F 2207/01 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A graded multilayered composite, comprising:
a sintered metal matrix material, having a first edge on a first side of the sintered metal matrix material and a second edge on a second side of the sintered metal matrix material, opposite the first side, the sintered metal matrix material having a sintered metal matrix throughout the sintered metal matrix material from the first edge to the second edge;
a first layer of hollow microspheres, located on the first side of the sintered metal matrix material;
a second layer of hollow microspheres, located on the second side of the sintered metal matrix material; and
one or more cooling channels in the sintered metal matrix material between the first edge and the second edge,
wherein:
hollow microspheres of the first layer of hollow microspheres are spatially distributed relative to each other according to a first spatial gradation, each hollow microsphere having a void therein defining a void volume,
hollow microspheres of the second layer of hollow microspheres are spatially distributed relative to each other according to a second spatial gradation, each hollow microsphere having a void therein defining a void volume,
the first spatial gradation is based upon one of a number of the hollow microspheres in the first layer of hollow microspheres or a size of the hollow microspheres in the first layer of hollow microspheres, and
the second spatial gradation is based upon one of a number of the hollow microspheres in the second layer of hollow microspheres or a size of the hollow microspheres in the second layer of hollow microspheres,
wherein a total void volume fraction of the second layer is less than a total void volume fraction of the first layer.