CREEP OF ZIRCALOY-2 PRESSURE TUBES. I. LONGITUDINAL DIRECTION

Technical Report · Thu Jun 01 04:00:00 EDT 1961

OSTI ID:4003567

Bell, L G

Creep tests were done on longitudinal samples from two Zircaloy-2 pressure tubes at 300 deg C and stresses between 13,500 lb/in/sup 2/. and the ultimate tensile strength. Many of the tests were continued beyond 5000 hours. The requirement of a creep rate of 10/sup -5/%/hr is met at a stress of 30,000 lb/ in/sup 2/. at 300 deg C; under these conditions the rupture life is over 10 years. The stress-rupture requirement, 4/5 of the stress that will cause failure in 100,000 hr, is met at 24,000 lb/in2. The difference in stress to produce a certain creep rate for Zircaloy-2 from different sources remains constant as the creep rate or stress goes down and is about the same as the difference in UTS at temperature. (auth)

• Research Organization: Atomic Energy of Canada Ltd., Chalk River, Ont.
• NSA Number: NSA-15-026538
• OSTI ID: 4003567
• Report Number(s): CRGM-1016; AECL-1289
• Country of Publication: Canada
• Language: English

Related Subjects

CREEP
FAILURES
METALS, CERAMICS, AND OTHER MATERIALS
PRESSURE
STRESSES
TENSILE PROPERTIES
TUBES
VELOCITY
ZIRCALOY