Microstructure and properties of corrosion-resistant zirconium-tin-iron-chromium-nickel alloys
- Sandvik Special Metals Corp., Kennewick, WA (United States)
- AB Sandvik Steel (Sweden)
Long-term autoclave tests in steam at 673 K and mechanical property (tensile and creep) tests have been conducted to evaluate the effects of chromium (0 to 0.3%) and nickel (0 to 0.08%) additions on the corrosion and mechanical properties of dilute zirconium-tin-iron alloys. The base alloys contain 0.4% iron and either 0.5% or 1.0% tin. Multiple regression analysis showed tin concentration to have a statistically significant effect on corrosion, hydrogen pickup, creep, and tensile strength. The corrosion resistance of the alloys increased significantly when the tin concentration decreased from 1.0 to 0.5%. An additional improvement in corrosion resistance was observed with increasing chromium content. Nickel additions had no apparent effect on corrosion for the alloy compositions examined. Lower hydrogen pickup fractions were measured for alloys containing 0.5% tin compared to alloys containing 1.0% tin. No significant effects of chromium or nickel additions to hydrogen pickup were observed. Creep rate decreased with increasing tin concentration and to a lesser extent with increasing chromium content. Nickel additions produced a large increase in creep rate for some alloys but not others. This suggests a possible interaction between nickel and the other alloy additions in determining creep strength.
- OSTI ID:
- 55668
- Report Number(s):
- CONF-930611-; ISBN 0-8031-2011-7; TRN: 95:012913
- Resource Relation:
- Conference: 10. international symposium on zirconium in the nuclear industry, Baltimore, MD (United States), 21-24 Jun 1993; Other Information: PBD: 1994; Related Information: Is Part Of Zirconium in the nuclear industry: Tenth international symposium. ASTM STP 1245; Garde, A.M.; Bradley, E.R. [eds.]; PB: 818 p.
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 NUCLEAR POWER REACTORS AND ASSOCIATED PLANTS
ZIRCONIUM BASE ALLOYS
MICROSTRUCTURE
CORROSION
MECHANICAL PROPERTIES
CHROMIUM
METALLURGICAL EFFECTS
NICKEL
TIN
PWR TYPE REACTORS
REACTOR MATERIALS
TIN ADDITIONS
IRON ADDITIONS
CHROMIUM ADDITIONS
NICKEL ADDITIONS
HYDRIDATION
EXPERIMENTAL DATA