Strength, ductility, and ductile-brittle transition temperature for MFR (magnetic fusion reactor) candidate vanadium alloys

Conference · Tue Sep 01 04:00:00 EDT 1987

OSTI ID:5830804

Loomis, B A; Lee, R H; Smith, D L; Peterson, J R

The dependence of the yield strength, tensile strength, elongation, and reduction in area on temperature for the V-15Ti-7.5Cr, V-20Ti, V-15Cr-5Ti, V-12Cr-5Ti, V-10Cr-5Ti, and V-3Ti-1Si alloys was determined from tensile tests at temperatures ranging from 25 to 700/sup 0/C. The strength of the alloys increased with an increase of the combined Cr and Ti concentration. The total elongation for the alloys ranged between 20% and 38%. The reduction in area ranged from 30% to 90%. The DBTT, which was determined from the temperature dependence of the reduction in area, was less than 25/sup 0/C for the V-15Ti-7.5Cr, V-20Ti, and V-3Ti-1Si alloys. The DBTT for the V-10Cr-5Ti, V-12Cr-5Ti, and V-15Cr-5Ti alloys was also less than 25/sup 0/C if these alloys were annealed to reduce the hydrogen concentration prior to the tensile test. If these latter alloys were not annealed prior to the tensile test, the DBTT ranged from 40/sup 0/C to 90/sup 0/C and the DBTT increased with an increase of the Cr concentration. A Cr/Ti concentration ratio of 0 to 0.5 in these alloys was found to cause the alloys to be less susceptible to hydrogen embrittlement. 14 refs., 4 figs., 3 tabs.

• Research Organization: Argonne National Lab., IL (USA); Teledyne-Wah Chang, Albany, OR (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5830804
• Report Number(s): CONF-871036-24; ON: DE88003051
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
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700209 -- Fusion Power Plant Technology-- Component Development & Materials Testing
ALLOYS
DUCTILE-BRITTLE TRANSITIONS
DUCTILITY
EMBRITTLEMENT
HYDROGEN EMBRITTLEMENT
IMPURITIES
MAGNETIC FIELD CONFIGURATIONS
MECHANICAL PROPERTIES
TEMPERATURE DEPENDENCE
TENSILE PROPERTIES
TESTING
VANADIUM ALLOYS