Email RIS file
Bookmark
Report an Issue

Investigation of the cryogenic mechanical properties of low thermal-expansion superalloys

Author
Summers, L. T.
Published
United States : [publisher not identified], 1985
Springfield, Va.: National Technical Information Service, [approximately 1985]
Physical Description
microfiche : negative ; 11 x 15 cm
Additional Creators
Dalder, E. N. C.

Availability

Browse Nearby on Shelf
I Want It
I Want It

Finding items...

Summary
Four Fe-based superalloys, JBK-75, Incoloy 903, Incoloy 905, and Incoloy 909 were evaluated as tube materials for ICCS Nb3Sn superconductors. Evaluation consisted of 4-K tensile and elastic-plastic fracture-toughness testing, and a microstructural characterization of unwelded and autogenously gas-tungsten-arc welded sheet given a simulated postweld processing treatment of 15% cold reduction by rolling followed by a Nb3Sn-reaction heat treatment of 96 hours at 700/sup 0/C plus 48 hours at 730/sup 0/C. Results indicate that JBK-75 and Incoloy 903 showed satisfactory combinations of strength and toughness for ICCS tube use requiring long Nb3Sn-reaction heat treatments. Incoloy 905 welds and 909 showed unacceptable fracture toughness. Results are discussed in terms of microstructural changes caused by the extended Nb3Sn-reaction heat treatment.
Report Numbers
DE85016650; UCRL-92345; CONF-850814-1
Other Subject(s)
Collection
NTIS collection.
Note
DOE contract number: W-7405-ENG-48
OSTI Identifier 5446718
Research organization: Lawrence Livermore National Lab., CA (USA).
View MARC record | catkey: 47357173