The effect of carbon distribution on deformation and cracking of Ni-16Cr-9Fe-C alloys
- Univ. of Michigan, Ann Arbor, MI (United States)
Constant extension rate tensile (CERT) tests and constant load tensile (CLT) tests were conducted on controlled purity Ni-16Cr-9Fe-C alloys. The amount and form of carbon were varied in order to investigate the roles of carbon in solution and as intergranular (IG) carbides in the deformation and IG cracking behavior in 360 C argon and primary water environments. Results show that the strength, ductility and creep resistance of these alloys are increased with carbon present in solid solution, while IG cracking on the fracture surface is suppressed. Alloys containing carbon in the form of IG carbides, however, exhibit reduced strength and ductility relative to carbon in solution, while maintaining high IG cracking resistance with respect to carbon-free alloys. CERT results of commercial alloy 600 and controlled purity, carbon containing alloys yield comparable failure strains and IG cracking amounts. CLT comparisons with creep tests of alloy 600 suggest that alloys containing IG carbides are more susceptible to creep than those containing all carbon in solid solution.
- DOE Contract Number:
- FG02-85ER45184
- OSTI ID:
- 203800
- Report Number(s):
- CONF-950816-; ISBN 1-877914-95-9; TRN: 96:009766
- Resource Relation:
- Conference: 7. international symposium on environmental degradation of materials in nuclear power plants: water reactors, Breckenridge, CO (United States), 6-10 Aug 1995; Other Information: PBD: 1995; Related Information: Is Part Of Seventh international symposium on environmental degradation of materials in nuclear power systems -- Water reactors: Proceedings and symposium discussions. Volume 1; Airey, G.; Andresen, P.; Brown, J. [eds.] [and others]; PB: 664 p.
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 NUCLEAR POWER REACTORS AND ASSOCIATED PLANTS
PWR TYPE REACTORS
REACTOR MATERIALS
CARBON
METALLURGICAL EFFECTS
NICKEL BASE ALLOYS
MECHANICAL PROPERTIES
CHROMIUM ALLOYS
IRON ALLOYS
WATER CHEMISTRY
MECHANICAL TESTS
EXPERIMENTAL DATA
CARBON ADDITIONS
DEFORMATION
CRACK PROPAGATION
INCONEL 600