Mechanical properties of alloy steels in molten sodium-potassium nitrate salts

Conference · · TMS (The Metallurgical Society) Paper Selection; (USA)

OSTI ID:5317075

Goods, S H ^[1]

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1. Sandia National Laboratories, Livermore, CA (USA)

A series of slow strain rate experiments have been performed in order to determine the influence of 60 weight percent NaNo{sub 3}-40 weight percent KNO{sub 3} salt environment on the tensile properties of several Fe based containment alloys. The results of these tests indicated that at 600 C high Cr austenitic stainless steels suffered no measurable degradation in their mechanical properties (tensile strength and ductility) when compared to air exposed control specimens. Lower alloy steels such as 2.25 Cr - 1 Mo did, however, suffer a significant loss in ductility when exposed to this environment at 450 and 525 C. Alloy strength was also markedly affected as the result of salt exposure. These results along with the influence of deformation on the structure of the oxide films formed in the salt environment are discussed.

• OSTI ID: 5317075
• Report Number(s): CONF-840909-; CODEN: TMPSA; TRN: 90-001103
• Journal Information: TMS (The Metallurgical Society) Paper Selection; (USA), Vol. 56; Conference: TMS-AIME fall meeting, Detroit, MI (USA), 16-20 Sep 1984; ISSN 0197-1689
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
36 MATERIALS SCIENCE
CORROSION RESISTANT ALLOYS
MATERIALS TESTING
MOLTEN SALT REACTORS
POTASSIUM NITRATES
CORROSIVE EFFECTS
SODIUM NITRATES
AUSTENITIC STEELS
DEFORMATION
DUCTILITY
FILMS
HIGH TEMPERATURE
MECHANICAL PROPERTIES
MOLTEN SALTS
OXIDES
STAINLESS STEELS
STRAIN RATE
TENSILE PROPERTIES
ALKALI METAL COMPOUNDS
ALLOYS
CHALCOGENIDES
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
NITRATES
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
REACTORS
SALTS
SODIUM COMPOUNDS
STEELS
TESTING
210300* - Power Reactors
Nonbreeding
Graphite Moderated
360103 - Metals & Alloys- Mechanical Properties