The mechanical behavior of a superalloy in a molten nitrate salt environment

Conference · Fri Jun 01 04:00:00 EDT 1984 · Am. Soc. Mech. Eng., (Pap.); (United States)

OSTI ID:6215398

Goods, S H

The influence of a molten nitrate salt (60 /SUP w/ //sub 0/NaNO/sub 3/-40 /SUP w/ //sub 0/KNO/sub 3/) environment on the mechanical properties of Alloy 800 has been investigated through a series of slow strain rate and fatigue crack growth experiments. At 600/sup 0/C and at strain rates between 2 x 10/sup -7/sec/sup -1/ and 1 x 10/sup -5/sec/sup -1/ no appreciable loss in strength or in ductility, as measured by reduction in area, was observed for specimens exposed to the salt environment compared to control specimens tested in air at the same temperature and strain rates. Nearthreshold crack growth rates were found to be marginally influenced by the salt environment. These results are discussed along with the influence of deformation on the structure of the oxide films formed due to exposure to the salt environment are discussed.

• Research Organization: Sandia National Laboratories, Livermore, CA
• OSTI ID: 6215398
• Report Number(s): CONF-840647-
• Conference Information: Journal Name: Am. Soc. Mech. Eng., (Pap.); (United States) Journal Volume: 84-PVP-126
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHALCOGENIDES
CHROMIUM ALLOYS
CORROSIVE EFFECTS
CRACK PROPAGATION
DEFORMATION
FATIGUE
FILMS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCOLOY 800
INCOLOY ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
MOLTEN SALTS
NICKEL ALLOYS
NITRATES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SALINITY
SALTS
STRAIN RATE
STRAINS