Accession Number:

AD0271982

Title:

FEASIBILITY STUDY AND EXPERIMENTAL MODEL OF AN OPTIMAL CONTROL SERVOMECHANISM

Descriptive Note:

Corporate Author:

AERONCA MFG CORP BALTIMORE MD

Personal Author(s):

Report Date:

1961-12-15

Pagination or Media Count:

1.0

Abstract:

AD- 3 AD-271 981Div. 17, 26U TISTMGEC OTS price 1.10Armour Research Foundation, Chicago, Ill. PILOT EVALUATION OF VANADIUM ALLOYS. Bimonthly progress rept. no. 2, 18 Nov 6117 Jan 62, by B. R. Rajala and F. C. Holtz. 14 Feb 62, 8p. incl. table Rept. no. ARF 2231-2 Contract NOw 62-0101-c Unclassified report DESCRIPTORS Vanadium alloys, Titanium al loys, Niobium alloys, Hafnium alloys, Chemical impurities, Oxygen, Nitrogen, Processing. Tests, Mechanical properties, Tensile prop erties, Deformation, High temperature research, Controlled atmospheres. Alloys. The effects of interstitial impurities, especially O and N, on the fabricability and elevatedtemperature strength properties of V-Nb base alloys were investigated. To establish optimum interstitial levels, a series of alloys based on V-1 wt- Ti-60 wt- Nb and V-1 wt- Hf-60 wt- Nb were prepared as small arc-melted ingots with varying O and N additions. Analyses of V alloy sheet stock which had been tensile tested under a dynamic He atmosphere indicated that good elevated-temperature strength was obtained at O and N levels in the range of 0.07 to 0.13 wt-, and the specimens exhibited room-temperature bend ductility. Tensile evaluations under vacuum at 2000 F showed the addition of 0.05 wt- O to a V-5 wt- Ti-20 wt- Nb base to be a much more potent strengthener than was 0.03 wt- C to the same base. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE