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
- Country of Publication:
- United States
- Language:
- English
Similar Records
HYDROGEN PICKUP IN VARIOUS ZIRCONIUM ALLOYS DURING CORROSION EXPOSURE IN HIGH-TEMPERATURE WATER AND STEAM
Effects of alloying elements on carbon dioxide corrosion in 13% to 20% chromium-containing steels
Related Subjects
36 MATERIALS SCIENCE
CHROMIUM
CHROMIUM ADDITIONS
CORROSION
EXPERIMENTAL DATA
HYDRIDATION
IRON ADDITIONS
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
MICROSTRUCTURE
NICKEL
NICKEL ADDITIONS
PWR TYPE REACTORS
REACTOR MATERIALS
TIN
TIN ADDITIONS
ZIRCONIUM BASE ALLOYS