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Development of High-temperature Vanadium-base Alloy.
NTIS: PB 192 301 :13 pages
A vanadium-base alloy consisting of the following elements in weight- percent-molybdenum, 20; titanium, 10; carbon, 0.1; Silicon, 0.5; And yttrium, 0.5--Had exceptionally high strength at temperatures up to 1,200 deg. C. This alloy was capable of fabrication to sheet of 1 mm thickness by a combination of hot swaging and hot and warm rolling. In the warm-rolled condition at ambient temperature, its ultimate tensile strength was 1,205 meganewtons per square meter (mn/m2). The strength at 1,200 deg. C was 150 mn/m2. Within the temperature range of 25 deg. to 1,200 deg. C, the ductility of the alloy as measured by elongation increased from 4 to >90 percent. Strengthening was achieved by both solid-solution and dispersed- phase mechanisms. Alloys of 20 percent molybdenum and 10 percent titanium were stronger than the other molybdenum-titanium alloy compositions tested. Strength was increased 15 percent in the temperature range of 25 deg. to 800 deg. C, with no accompanying loss in ductility, by the addition of 0.5 percent silicon. Workability was improved by additions of 0.25 and 0.5 percent yttrium.
IH; Report of Investigation;
NTIS Accession No.
NTIS: PB 192 301
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division