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Uranium Cold Extrusion

Description: Several hollow uranium cores of "C" size I & E diameters were fabricated by cold extrusion (550 to 750 F) at Hunter Douglas Aluminum Corporation. Results show diameter control and reproducibility are excellent. Preferred orientation induced by this process is completely removed by a single standard beta heat treatment.
Date: April 21, 1959
Creator: Riedeman, G. W.
Partner: UNT Libraries Government Documents Department
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Plastic Flow During Extrusion of Tubing

Description: Abstract: "A study of plastic flow during the extrusion of tubing was made by extruding colored Plasticine billets in a small-scale extrusion press. Decreasing the included angle of the conical die and tapering the ram end of the billet decreased the amount of coextrusion of the backer block into the tubing, lubricating the billet also decreased coextrusion."
Date: July 26, 1955
Creator: Saller, Henry A.; Keeler, John R. & Cuddy, Lee J.
Partner: UNT Libraries Government Documents Department
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The Extrusion of Beryllium

Description: Abstract: "A method for the extrusion of beryllium into rods and tubing has been developed. The operation is carried out between 1500 and 1900 F and the billet is clad in a layer of soft iron to prevent contact between it and the die steals. Extruded beryllium has much more strength and ductility than cast metal due to the crystal refinement which occurs as a result of the fabrication operation."
Date: 1950
Creator: Creutz, Edward Chester, {}
Partner: UNT Libraries Government Documents Department
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Preparation of Plutonium Sheet by Extrusion

Description: Plutonium sheet of uniform thickness and good surface can be made by the extrusion of a tube which is then split and flattened. This report describes the equipment and the operating conditions for making sheet 0.005 to 0.055 in. thick with areas up to 24 in. square.
Date: January 17, 1957
Creator: McNeese, W. D.
Partner: UNT Libraries Government Documents Department
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Kinetics of Erythroblastic Cell Populations in the Dog, Studied with Tritiated Thymidine

Description: In the erythroblastic series of several species, including man and dog, nuclear pyknosis in the last stages of maturation, before nuclear extrusion, is accompanied by a loss of the ability to synthesize DNA (1, 5). Cells of this group never appear labeled during the first hour after injection of tritiated thymidine. Less mature erythroblastic cells appear labeled or not on early samples, according to their functional status in the cell cycle. DNA synthesis indeed is not seen just before, during… more
Date: 1962
Creator: Odartchenko, N.; Bond, V. P.; Feinendegen, L. E. & Cottier, H.
Partner: UNT Libraries Government Documents Department
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Impact Extrusion of Uranium

Description: Uranium has been successfully impact extruded into typical cylindrical shapes of conventional design. Extrusion was carried out in the "gamma" region by heating cast uranium slugs to a temperature of approximately 1050 degrees C. Protection against oxidation was afforded by surrounding the slugs during heating with an inert atmosphere of argon gas. Impact extruded shapes possessed physical properties which are better than the properties of as-cast metal. Also, extruded shapes show a uniform int… more
Date: January 10, 1951
Creator: Hanks, G. S.; Jaynes, G. E.; Taub, J. M. & Doll, D. T.
Partner: UNT Libraries Government Documents Department
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Oxidation and Dislocation Mechanism in Fatigue Crack Formation

Description: A discussion concerning the mechanism of extrusion and intrusion formation is presented. A model involving dislocation motions is proposed by which experimental results are explained. In this first stage of fatigue defect formation, it appears that O₂ is not involved. While in the second stage, in which microcracks are formed oxidation is probably important. The effects of oxidation in the third stage, in which cracks of macroscopic size propagate steadily through the area and lead finally to f… more
Date: 1962
Creator: Fujite, F. E.
Partner: UNT Libraries Government Documents Department
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Multilayer co-extrusion technique for developing high energy density organic devices.

Description: The purpose of this project is to develop multi-layered co-extrusion (MLCE) capabilities at Sandia National Laboratories to produce multifunctional polymeric structures. Multi-layered structures containing layers of alternating electrical, mechanical, optical, or structural properties can be applied to a variety of potential applications including energy storage, optics, sensors, mechanical, and barrier applications relevant to the internal and external community. To obtain the desired properti… more
Date: November 1, 2009
Creator: Spangler, Scott W.; Schroeder, John Lee; Mrozek, Randy (Army Research Lab, Adelphi, MD); Bieg, Lothar Franz; Rao, Rekha Ranjana; Lenhart, Joseph Ludlow (Army Research Lab, Adelphi, MD) et al.
Partner: UNT Libraries Government Documents Department
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Plant-Wide Assessment Report for Shaw Industries, Plant #78; Aiken, SC

Description: A plant-wide energy assessment sponsored by the U.S. Department of Energy was conducted at Shaw Industries Group, plant #78 in Aiken, SC. The assessment team consisted of Georgia Tech faculty from the Energy & Environmental Management Center and Shaw personnel from plant #78 and the corporate energy group. The purpose of this assessment was to uncover as many opportunities for saving energy usage and costs using techniques that have been established as best practices in the energy engineering f… more
Date: April 10, 2006
Creator: Michael Brown PE, CEM; Soderlund, Matt; PE, Bill Meffert; Baldisserotto, Paolo & Jerry Zolkowski PE, CEM
Partner: UNT Libraries Government Documents Department
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A Study of Fabricating Beryllia by Cold Compaction and Extrusion Techniques

Description: From introduction: "This report presents the results of the preliminary studies of two fabrication methods aimed at producing high density beryllia shapes more economically. The method were cold compaction and sintering, and extrusion and sintering."
Date: July 1958
Creator: Harkulich, Theodore M. & Higbie, Kenneth B.
Partner: UNT Libraries Government Documents Department
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Final Technical Report for the Martin County Hydrogen Fuel Cell Development Project

Description: In September 2008, the U.S. Department of Energy and Martin County Economic Development Corporation entered into an agreement to further the advancement of a microtubular PEM fuel cell developed by Microcell Corporation. The overall focus of this project was on research and development related to high volume manufacturing of fuel cells and cost reduction in the fuel cell manufacturing process. The extrusion process used for the microfiber fuel cells in this project is inherently a low cost, hig… more
Date: March 9, 2011
Creator: Eshraghi, Ray
Partner: UNT Libraries Government Documents Department
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Interparticle movement and the mechanical behavior of extruded powder aluminum at elevated temperature

Description: This paper proposes a model and mechanism, based on relative motion of the extruded aluminum particles, to explain these effects. Quantitative stereology is used to support the concept. Stress-strain relations are derived for the uniaxial and biaxial behavior of powder aluminum and they are seen to fit the data from a number of uniaxial and tension-torsion test specimens. Implications of the model for forming of extruded powder metal products are discussed
Date: September 1, 1996
Creator: Peacock, H.B.
Partner: UNT Libraries Government Documents Department
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Study of Aluminum Alloys Containing Up to 45 W/O Uranium

Description: Report discussing a study on casting techniques for the production of sound homogeneous extrusion blanks composed of aluminum-uranium alloys with 30 to 45 w/o uranium.
Date: April 30, 1957
Creator: Daniel, Norman E.; Foster, Ellis L.; DeMastry, John A.; Bauer, Arthur A. & Dickerson, Ronald F.
Partner: UNT Libraries Government Documents Department
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Oxide Dispersion Strengthened Fe(sub 3)Al-Based Alloy Tubes: Application Specific Development for the Power Generation Industry

Description: A detailed and comprehensive research and development methodology is being prescribed to produce Oxide Dispersion Strengthened (ODS)-Fe3Al thin walled tubes, using powder extrusion methodologies, for eventual use at operating temperatures of up to 1100C in the power generation industry. A particular 'in service application' anomaly of Fe3Al-based alloys is that the environmental resistance is maintained up to 1200C, well beyond where such alloys retain sufficient mechanical strength. Grain boun… more
Date: July 1, 1999
Creator: Kad, B.K.
Partner: UNT Libraries Government Documents Department
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A PROGRAM OF RESEARCH ON MECHANICAL METALLURGY AS RELATED TO FUEL-ELEMENT FABRICATION. Quarterly Progress Report for the Period Ending June 30, 1961

Description: Results of crawing experiments using 3/8-in. bars to provide rod and tube test specimens are reported. In mechanical metallurgy investigations on the relation of formability to imperfection structure the peierls potentials for dislocation of Nb, Mo, Ta, and W were measured. Design and construction of a microextensometer reported. The investigations of the effects of grain size on the stored energy cold work were extended to a new lot OFHC Cu. In studies of formability relations with imperfectio… more
Date: August 31, 1961
Creator: Trozera, T Z; Koyama, K; White, J L & Chambers, R H
Partner: UNT Libraries Government Documents Department
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INVESTIGATION OF THE TECHNICAL FEASIBILITY OF COLD EXTRUSION FOR ZIRCALOY-2 TUBING PRODUCTION. Quarterly Technical Progress Report, October-December 1960

Description: S>Activities included completion of room-temperature extrusion tests on Zircaloy bar, and extrusions with 50% reduction at temperatures up to 400 deg C. Results of these tests are tabulated along with results of billet piercing tests at 300 deg C. It is noted that production of capped Zircaloy tubes by cold extrusion appears promising. (J.R.D.)
Date: October 31, 1962
Partner: UNT Libraries Government Documents Department
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A model for the biaxial post-yield behavior of extruded powder aluminum at elevated temperature

Description: A model has been developed which describes the post-yield behavior of extruded powder aluminum tested biaxially in tension and torsion at elevated temperature. Plots of shear stress versus shear strain for the powder aluminum loaded in simple torsion show that the shear stress increases linearly to the yield point, then remains relatively constant in a pure plastic type of behavior. For the tension-torsion tests, there is an initial linear region up to the yield point followed by a fairly linea… more
Date: December 31, 1990
Creator: Woods, T. O.; Berghaus, D. G. & Peacock, H. B.
Partner: UNT Libraries Government Documents Department
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