	US 11,851,735 B2
	High-strength and ductile multicomponent precision resistance alloys and fabrication methods thereof
Zhiming Li, Changsha (CN); Shuya Zhu, Changsha (CN); Dingshun Yan, Changsha (CN); Kefu Gan, Changsha (CN); and Yong Zhang, Changsha (CN)
Assigned to Central South University, Changsha (CN)
Appl. No. 18/004,662
Filed by Central South University, Changsha (CN)
PCT Filed Jun. 7, 2022, PCT No. PCT/CN2022/097459 § 371(c)(1), (2) Date Jan. 6, 2023, PCT Pub. No. WO2023/050860, PCT Pub. Date Apr. 6, 2023.
Claims priority of application No. 202111158979.1 (CN), filed on Sep. 30, 2021.
Prior Publication US 2023/0257855 A1, Aug. 17, 2023
Int. Cl. C22C 19/05 (2006.01); C22F 1/10 (2006.01); C22C 1/02 (2006.01)

CPC C22C 19/058 (2013.01) [C22C 1/023 (2013.01); C22F 1/10 (2013.01)]

9 Claims

1. A high-strength and ductile multicomponent precision resistance alloy, consisting essentially of the following components by atomic percentage:

45-60% of Ni,

15-30% of Cr,

5-20% of Fe,

5-15% of Al,

3-5% of Mn,

0.2-3% of Cu, and

1-5% of Si;

wherein the sum of the atomic percentage of Ni, Cr, Fe and Al is ≥70% and ≤95.8%, the sum of the atomic percentage of Mn, Cu and Si is ≥4.2% and ≤13%, and the sum of the atomic percentage of all components is 100%;

wherein the alloy has a yield strength from 300 MPa to 900 MPa, an ultimate tensile strength from 700 MPa to 1200 MPa, and a total elongation from 30% to 70%, and the alloy has a resistivity between 120 μΩ·m to 160 μΩ·cm and a temperature coefficient of resistivity between +300 ppm/K to −300 ppm/K in a temperature range below 773 K, and the alloy has a face-centered cubic (FCC) phase structure.