High toughness-high strength iron alloy. [10 to 16% Ni, 0. 1 to 1. 0% Al, 0 to 3% of at least one of Cv, La, Nb, Ta, Ti, V, Y, Zr, rare earths]
A steel alloy is provided which exhibits excellent strength and toughness characteristics at cryogenic temperatures. The alloy consists essentially of about 10 to 16 percent by weight nickel, about 0.1 to 1.0 percent by weight aluminum, and 0 to about 3 percent by weight of at least one of the following additional elements: copper, lanthanum, niobium, tantalum, titanium, vanadium, yttrium, zirconium and the rare earth metals, with the balance being essentially iron. The steel alloy is produced by a process which includes using cold rolling at room temperature and subsequent heat treatment at temperatures ranging from 500 to 650 C, and possesses a fracture toughness ranging from 200 to 230 ksi and yield strengths up to 230 ksi.
- Research Organization:
- National Aeronautics and Space Administration, Cleveland, Ohio (USA). Lewis Research Center
- OSTI ID:
- 7084658
- Report Number(s):
- N-77-24254; TRN: 78-000257
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COPPER ALLOYS
COLD WORKING
FRACTURE PROPERTIES
YIELD STRENGTH
LANTHANUM ALLOYS
NICKEL STEELS
NIOBIUM ALLOYS
RARE EARTH ALLOYS
TANTALUM ALLOYS
TITANIUM ALLOYS
VANADIUM ALLOYS
YTTRIUM ALLOYS
ZIRCONIUM ALLOYS
ALUMINIUM ADDITIONS
HEAT TREATMENTS
ROLLING
ALLOYS
ALUMINIUM ALLOYS
FABRICATION
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS WORKING
MECHANICAL PROPERTIES
NICKEL ALLOYS
STEELS
360101* - Metals & Alloys- Preparation & Fabrication
360103 - Metals & Alloys- Mechanical Properties