In-reactor creep of Zr-2. 5 Nb

Journal Article · Sun Jan 01 04:00:00 EST 1984 · Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States)

OSTI ID:5576680

Causey, A R; Holt, R A; MacEwen, S R

The anisotropy of irradiation creep of Zr-2.5Nb alloy tubes at 570 K was investigated using creep of helical springs and stress relaxation of twisted rods and bent beams. These tests measure creep rate directly since strains associated with irradiation growth are absent. Creep rates from these tests and from results on creep of pressurized tubes reported in the literature can be correlated through consideration of the crystallographic texture, slip systems, and dislocation density of the Zr-2.5Nb tubing. A creep model based on glide of dislocations on prismatic planes in combination with secondary glide of dislocations on pyramidal planes provides a consistent correlation. The creep rate is only slightly dependent on dislocation density as measured by x-ray diffraction. 32 references, 6 figures, 8 tables.

• Research Organization: Atomic Energy of Canada Ltd., Chalk River, Ontario
• OSTI ID: 5576680
• Journal Information: Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States), Journal Name: Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States) Vol. 824; ISSN ASTTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
ALLOYS
CREEP
DATA
EXPERIMENTAL DATA
INFORMATION
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
NIOBIUM ALLOYS
NUMERICAL DATA
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
ZIRCONIUM ALLOYS