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Development of High-temperature Vanadium-base Alloy.

Authors
Keith-GH; Winston-JS
Source
NTIS: PB 192 301 :13 pages
Link
NIOSHTIC No.
10009036
Abstract
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.
Publication Date
19700101
Document Type
IH; Report of Investigation;
Fiscal Year
1970
NTIS Accession No.
PB-192301
NTIS Price
A03
Identifying No.
RI 7393
NIOSH Division
RERC;
Source Name
NTIS: PB 192 301
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