Published November 1979 | Version v1
Report Open

Fatigue crack propagation in Hastelloy X weld metal

Creators

Description

The fatigue crack growth rate of Hastelloy X weld metal increased with stress intensity, temperature, and inverse frequency. The results were correlated with the equation da/dN = (ΔK)/sup n/, for constant frequency or constant temperature. The values of A and n were computed with a linear regression algorithm. With decreasing frequency at constant ΔK and constant temperature (5380C) fatigue crack growth rates approach an upper limit. Fatigue crack growth rate of the weld metal was lower than that reported for base metal at 5380C and lower at 6490C for a frequency of 1 Hz

Availability note (English)

MF available from INIS under the Report Number; Available from NTIS., PC A02/MF A01.

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Additional details

Publishing Information

Imprint Pagination
24 p.
Report number
ORNL/TM--6999

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
11521445
Subject category
S36: MATERIALS SCIENCE; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
CORROSION RESISTANCE; CRACKS; FABRICATION; FATIGUE; FILLER METALS; GAS TURBINES; HASTELLOY X; HTGR TYPE REACTORS; PIPELINES; WELDED JOINTS
Descriptors DEC
ALLOYS; CHROMIUM ALLOYS; COBALT ALLOYS; GAS COOLED REACTORS; GRAPHITE MODERATED REACTORS; HASTELLOYS; HEAT RESISTING ALLOYS; IRON ALLOYS; JOINTS; MECHANICAL PROPERTIES; MOLYBDENUM ALLOYS; NICKEL ALLOYS; REACTORS; TRANSITION ELEMENT ALLOYS; TUNGSTEN ALLOYS; TURBINES