High strength nickel-chromium-iron austenitic alloy

Patent · 31 December 1979

OSTI ID:863664

Gibson, Robert C ^[1]; Korenko, Michael K ^[2]

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1. Ringwood, NJ
2. Richland, WA

A solid solution strengthened Ni-Cr-Fe alloy capable of retaining its strength at high temperatures and consisting essentially of 42 to 48% nickel, 11 to 13% chromium, 2.6 to 3.4% niobium, 0.2 to 1.2% silicon, 0.5 to 1.5% vanadium, 2.6 to 3.4% molybdenum, 0.1 to 0.3% aluminum, 0.1 to 0.3% titanium, 0.02 to 0.05% carbon, 0.002 to 0.015% boron, up to 0.06 zirconium, and the balance iron. After solution annealing at 1038.degree. C. for one hour, the alloy, when heated to a temperature of 650.degree. C., has a 2% yield strength of 307 MPa, an ultimate tensile strength of 513 MPa and a rupture strength of as high as 400 MPa after 100 hours.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• DOE Contract Number: E(45-1)-2170
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4225364
• OSTI ID: 863664
• Country of Publication: United States
• Language: English

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