High strength nickel-chromium-iron austenitic alloy

Patent · Tue Sep 30 04:00:00 EDT 1980

OSTI ID:6504860

Gibson, R C; Korenko, M K

A solid solution strengthened Ni-Cr-Fe alloy is capable of retaining its strength at high temperatures and consists 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 05% carbon, 0.002 to 0.015% boron, up to 0.06 zirconium, and the balance iron. After solution annealing at 1038/sup 0/C. For one hour, the alloy, when heated to a temperature of 650/sup 0/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.

• Assignee: Department of Energy
• Patent Number(s): US 4225364
• OSTI ID: 6504860
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
CHEMICAL COMPOSITION
CHROMIUM ALLOYS
HEAT TREATMENTS
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
NICKEL ALLOYS
NICKEL STEELS
NICKEL-CHROMIUM STEELS
STEELS