US 11,717,889 B2
Multi-metallic articles of manufacture
Ning Ma, Whitehouse Station, NJ (US); Hyun-Woo Jin, Easton, PA (US); and Shiun Ling, Washington, NJ (US)
Assigned to Exxon Mobil Technology and Engineering Company, Annandale, NJ (US)
Filed by ExxonMobil Technology and Engineering Company, Annandale, NJ (US)
Filed on Jan. 10, 2020, as Appl. No. 16/739,626.
Claims priority of provisional application 62/795,072, filed on Jan. 22, 2019.
Prior Publication US 2020/0230697 A1, Jul. 23, 2020
Int. Cl. B22F 7/08 (2006.01); B22F 10/25 (2021.01); B22F 10/38 (2021.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); B33Y 80/00 (2015.01); B22F 12/53 (2021.01); B22F 10/34 (2021.01)
CPC B22F 7/08 (2013.01) [B22F 10/25 (2021.01); B22F 10/38 (2021.01); B22F 10/34 (2021.01); B22F 12/53 (2021.01); B22F 2301/052 (2013.01); B22F 2301/15 (2013.01); B22F 2301/35 (2013.01); B22F 2301/40 (2013.01); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); B33Y 80/00 (2014.12)] 12 Claims
OG exemplary drawing
 
1. A method comprising joining, using additive manufacturing, a first metallic material and a second metallic material that is different from the first metallic material,
wherein the joining comprises forming a buffer layer joint, the buffer layer joint comprising a material that is different from both the first and second metallic materials, on the first metallic material before additively manufacturing the second metallic material on the buffer layer joint, and
wherein the buffer layer joint is a single layer between the first metallic material and the second metallic material, has a thickness in the range of about 0.01 millimeter to about 0.025 millimeter, and has a porosity of less than about 0.1 percent by volume, measured according to ASTM B-962.