US 11,859,273 B2
Functionally graded variable entropy alloys with resistance to hydrogen induced cracking
Shashwat Shukla, Singapore (SG); Arpana Singh, Singapore (SG); and Michael Linley Fripp, Carrollton, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Jan. 10, 2023, as Appl. No. 18/095,403.
Application 18/095,403 is a continuation of application No. 17/343,021, filed on Jun. 9, 2021, granted, now 11,549,165.
Prior Publication US 2023/0160049 A1, May 25, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C22F 1/10 (2006.01); B32B 15/01 (2006.01); C22C 19/05 (2006.01)
CPC C22F 1/10 (2013.01) [B32B 15/01 (2013.01); C22C 19/057 (2013.01); Y10T 428/12944 (2015.01)] 19 Claims
OG exemplary drawing
 
1. A layered metal with resistance to hydrogen induced cracking, comprising:
a core metal alloy, wherein the core metal alloy comprises twinned boundaries, wherein the core metal alloy has undergone plastic deformation and a heat treatment; and
a skin metal alloy disposed on the core metal alloy, wherein the skin metal alloy comprises an entropy greater than the core metal alloy, wherein the core metal alloy comprises a greater density of twinned boundaries than the skin metal alloy.