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Fatigue strength of Inconel 625 plate and weldments used in the DIII-D configuration vacuum vessel

Author
Trester, P. W.
Published
United States : [publisher not identified], 1984
Springfield, Va.: National Technical Information Service, [approximately 1984]
Physical Description
microfiche : negative ; 11 x 15 cm
Additional Creators
Gallix, R. and Kaae, J. L.

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Summary
The Doublet III-D vacuum vessel will enable fusion experiments with large dee-configuration plasmas in the tokamak device at GA Technologies Inc. The vessel is a welded structure of Ni-Cr-Mo-Nb alloy Inconel 625, in the forms of mill-annealed plate and sheet. An emphasis was placed on spceifying material with small grain size to enhance fatigue resistance. Fatigue strength was determined by tension-compression axial strain cycling of specimens excised from stock plate 25 mm thick. In addition, tests were conducted on gas-tungsten-arc weldments. The strain ranges and the resulting alternating, which produced fatigue lives between 103 and 10/sup 6/ cycles, were determined in the test program. Comparisons are presented with published data obtained using the rotating-beam test method. A discussion is also presented on the effect of the grain size on fatigue strength.
Report Numbers
DE85008276; GA-A-17791; CONF-841246-23
Other Subject(s)
Collection
NTIS collection.
Note
DOE contract number: AT03-84ER51044
OSTI Identifier 5981753
Research organization: General Atomic Co., San Diego, CA (USA).
View MARC record | catkey: 47350921