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Title: Creep-resistant, cobalt-containing alloys for high temperature, liquid-salt heat exchanger systems

Abstract

An essentially Fe-free alloy consists essentially of, in terms of weight percent: 4 to 11 Co, 6.5 to 7.5 Cr, 0 to 0.15 Al, 0.5 to 0.85 Mn, 11 to 20 Mo, 1 to 3.5 Ta, 0.05 to 9 W, 0.03 to 0.08 C, 0 to 0.001 B, 0.0005 to 0.005 N, balance Ni, the alloy being characterized by, at 850.degree. C., a yield strength of at least 25 Ksi, a tensile strength of at least 45 Ksi, a creep rupture life at 12 Ksi of at least 10 hours, and a corrosion rate, expressed in weight loss [g/(cm.sup.2sec)]10.sup.-11 during a 1000 hour immersion in liquid FLiNaK at 850.degree. C., in the range of 5 to 20.

Inventors:
; ;
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1462963
Patent Number(s):
10,017,842
Application Number:
13/958,672
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Aug 05
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Holcomb, David E., Muralidharan, Govindarajan, and Wilson, Dane F. Creep-resistant, cobalt-containing alloys for high temperature, liquid-salt heat exchanger systems. United States: N. p., 2018. Web.
Holcomb, David E., Muralidharan, Govindarajan, & Wilson, Dane F. Creep-resistant, cobalt-containing alloys for high temperature, liquid-salt heat exchanger systems. United States.
Holcomb, David E., Muralidharan, Govindarajan, and Wilson, Dane F. Tue . "Creep-resistant, cobalt-containing alloys for high temperature, liquid-salt heat exchanger systems". United States. https://www.osti.gov/servlets/purl/1462963.
@article{osti_1462963,
title = {Creep-resistant, cobalt-containing alloys for high temperature, liquid-salt heat exchanger systems},
author = {Holcomb, David E. and Muralidharan, Govindarajan and Wilson, Dane F.},
abstractNote = {An essentially Fe-free alloy consists essentially of, in terms of weight percent: 4 to 11 Co, 6.5 to 7.5 Cr, 0 to 0.15 Al, 0.5 to 0.85 Mn, 11 to 20 Mo, 1 to 3.5 Ta, 0.05 to 9 W, 0.03 to 0.08 C, 0 to 0.001 B, 0.0005 to 0.005 N, balance Ni, the alloy being characterized by, at 850.degree. C., a yield strength of at least 25 Ksi, a tensile strength of at least 45 Ksi, a creep rupture life at 12 Ksi of at least 10 hours, and a corrosion rate, expressed in weight loss [g/(cm.sup.2sec)]10.sup.-11 during a 1000 hour immersion in liquid FLiNaK at 850.degree. C., in the range of 5 to 20.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {7}
}

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Works referenced in this record:

Nickel-Chromium-Alloy
patent-application, November 2011


Microstructural and microchemical mechanisms controlling intergranular stress corrosion cracking in light-water-reactor systems
journal, October 1994