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Vanadium-base Alloy.

Keith GH; Mathews DR
U S Pat 3 576 621 1971 Apr; :
Although pure vanadium, in the form of sheet rolled to 0.05-In thick at 500 deg. C from 80-g ingots arc-melted from powder compacts under he has at room temperature approximately 100,000 psi tensile strength, 6.1 G/cm3 density, and 5 pct elongation, an alloy similarly fabricated from a powder mixture containing approximately mo 20, ti 10, si 0.5, Y 0.25, and c 0.1 pct had sufficiently higher strength, with 6.25 Density, and about the same ductility and corrosion resistance to be of value as a construction material, especially at 800 deg.-1,000 Deg. C. The ingots were encapsulated in stainless steel for swaging at 1,200 deg c to rods that were rolled at the same temperature to sheets 0.135-In thick before removing the protection by machining, and finished at 500 deg. C to 0.04-0.06-In thickness. The compositions claimed are V 60-80, mo 15- 25, ti 5-15, y 0.1-1, and c 0.05-0.2 pct, with or without 0.2-0.75 pct si. At r.T. The thin sheets with si had 130,000-170,000 psi yield, 160,000-183,000 psi tensile strength, and 1-9 pct elongation; without si these properties were 110,000-147,000, 140,000-163,000, and 3-7 respectively; and for unalloyed V, 92,000, 110,000, and 5 respectively. At 800 deg. C these properties were 65,000-85,000, 85,000-97,000, 20-60; 50,000-60,000, 64,000-73,000, 30-40; 26,000, 30,000, 22 respectively. The penetration by 3n hno3 as measured in 24-h tests at 25-50 deg. C was 1943 mils/yr for the alloy containing si, 1445 for the alloy without si, and 1902 for unalloyed V.
Publication Date
Document Type
Fiscal Year
Identifying No.
PAT 3,576,621
Source Name
U.S. Pat. 3,576,621; Apr 27, 1971; Chem. Abstr. 75:24,563K
Page last reviewed: October 1, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division