Cryogenic toughness through microstructure control in an iron--nickel--titanium alloy

Conference · Wed Jan 01 00:00:00 EST 1975 · Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States)

OSTI ID:7354098

Jin, S; Whitaker, B; Morris, Jr, J W; Zackay, V F

The selection of composition and processing of an iron--nickel--titanium (Fe--Ni--Ti) alloy having a favorable combination of strength and toughness at cryogenic temperatures is discussed. Criteria on alloy composition lead to the choice of low interstitial Fe--/sup 12/Ni--0.25Ti. The alloy has a naturally favorable microstructure, but cryogenic toughness must be imparted through grain refinement. Several alternate procedures are identified; four of these are discussed in detail, along with the resulting tensile properties at 77/sup 0/K, Charpy impact energies at 77 and 5/sup 0/K, and behavior in fracture toughness tests at 77/sup 0/K. Alloys are obtained having yield strengths to 150 ksi with excellent impact toughness to 5/sup 0/K.

• Research Organization: Univ. of California, Berkeley
• OSTI ID: 7354098
• Journal Information: Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States), Vol. 579; Conference: Symposium on properties of materials for liquid natural gas tankage, Boston, MA, USA, 21 May 1974; Other Information: See ASTM-STP--579; CONF-740549--
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
36 MATERIALS SCIENCE
LIQUEFIED NATURAL GAS
STORAGE
NICKEL STEELS
FRACTURE PROPERTIES
DUCTILE-BRITTLE TRANSITIONS
GRAIN REFINEMENT
LOW TEMPERATURE
MICROSTRUCTURE
TANKS
TENSILE PROPERTIES
TITANIUM ADDITIONS
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
ALLOYS
CONTAINERS
CRYSTAL STRUCTURE
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
NATURAL GAS
NICKEL ALLOYS
STEELS
TITANIUM ALLOYS
035000* - Natural Gas- Storage- (1989-)
032000 - Natural Gas- Transport
Handling
& Storage
360103 - Metals & Alloys- Mechanical Properties