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Progress toward analytical description of the creep strain-time behavior of engineering alloys

Description: Elevated-temperature design methods in the United States often require a comprehensive description of the properties of the construction materials. These descriptions include representations for creep strain-time behavior as a function of stress, temperature, and material variability. Work conducted at this laboratory in the past five years toward the development of analytical techniques to derive such representations is summarized. Results for several common elevated-temperature structural mat… more
Date: January 1, 1980
Creator: Booker, M. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Use of generalized regression models for the analysis of stress-rupture data

Description: The design of components for operation in an elevated-temperature environment often requires a detailed consideration of the creep and creep-rupture properties of the construction materials involved. Techniques for the analysis and extrapolation of creep data have been widely discussed. The paper presents a generalized regression approach to the analysis of such data. This approach has been applied to multiple heat data sets for types 304 and 316 austenitic stainless steel, ferritic 2/sup 1///s… more
Date: January 1, 1978
Creator: Booker, M. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Study of tertiary creep instability in several elevated-temperature structural materials

Description: Data for a number of common elevated temperature structural materials have been analyzed to yield mathematical predictions for the time and strain to tertiary creep at various rupture lives and temperatures. Materials examined include types 304 and 316 stainless steel, 2 1/4 Cr-1 Mo steel, alloy 800H, alloy 718, Hastelloy alloy X, and ERNiCr--3 weld metal. Data were typically examined over a range of creep temperatures for rupture lives ranging from less than 100 to greater than 10,000 hours. W… more
Date: January 1, 1978
Creator: Booker, M. K. & Sikka, V. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Comparison of the mechanical strength properties of several high-chromium ferritic steels

Description: A modified 9 Cr-1 Mo ferritic steel has been selected as an alternative material for breeder reactors. Different 9 Cr-1 Mo steels are already being used commercially in UK and USA and a 9 Cr-2 Mo steel (EM12) is being used commercially in France. The 12% Cr steel alloy HT9 is also often recommended for high-temperature service. Creep-rupture data for all six seels were analyzed to yield rupture life as a function of stress, temperature, and lot-to-lot variations. Yield and tensile strength data… more
Date: January 1, 1981
Creator: Booker, M. K.; Sikka, V. K. & Booker, B. L. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Phase transformations in engineering materials

Description: Phase transformations in engineering materials are inevitably related to mechanical behavior and are often precursors to residual stress and distortion. Neutron scattering in general is a valuable tool for studying their effects, and pulsed neutrons are of special value, because of the inherently comprehensive crystallographic coverage they provide in each measurement. At the Manuel Lujan neutron scattering center several different research programs have addressed the relationships between phas… more
Date: 1996-06~
Creator: Bourke, Mark A. M.; Lawson, Andrew C.; Dunand, David C. & Priesmeyer, Hans G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Analysis of radiation-induced microchemical evolution in 300 series stainless steel

Description: The irradiation of 300 series stainless steel by fast neutrons leads to an evolution of alloy microstructures that involves not only the formation of voids and dislocations, but also an extensive repartitioning of elements between various phases. This latter evolution has been shown to be the primary determinant of the alloy behavior in response to the large number of variables which influence void swelling and irradiation creep. The combined use of scanning transmission electron microscopy and… more
Date: March 1, 1980
Creator: Brager, H. R. & Garner, F. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of a precision wire feeder for small-diameter wire

Description: At Sandia National Laboratories in Albuquerque, the author designed and fabricated a precision wire feeder to be used with high energy density (electron beam and laser beam) welding for weld joints where filler wire might be needed to fill a gap or to adjust the chemical composition so that a crack-free weld could be made. The wire feeder incorporates a 25,000 step-per-revolution motor to power a urethane-coated drive roll. A microprocessor-based controller provides precise control of the motor… more
Date: March 1, 1995
Creator: Brandon, E.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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RECOMMENDED PROPERTY AND REACTION KINETICS DATA FOR USE IN EVALUATING A LIGHT-WATER-COOLED REACTOR LOSS-OF-COOLANT INCIDENT INVOLVING ZIRCALOY-4- OR 304-SS-CLAD UO{sub 2}

Description: Selected values are presented for the high temperature physical and mechanical properties of fuel element materials involved in a loss-of-coolant incident in a boiling water or pressurized water nuclear reactor. The fuel element materials considered are Zircaloy-2 and -4, 304 SS, and UO{sub 2}. Where possible, the property values have been critically evaluated taking into consideration the meltdown environment of steam or steam and air. The physical properties discussed are: melting point, boil… more
Date: April 1, 1968
Creator: Brassfield, H.C.; White, J.F.; Sjodahl, L. & Bittel, J.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Decontamination testing of radioactive-contaminated stainless steel coupons using a Ce(IV) solution

Description: The current Hanford Waste Vitrification Plant (HWVP) reference process for canister decontamination describes an air-atomized frit/water slurry blaster developed for the Defense Waste Processing Facility (DWPF). Westinghouse Hanford Company (WHC) identified incentives to evaluate potential HWVP cost savings from adapting the Ce(IV)/HNO{sub 3} canister decontamination approach being developed for the West Valley Demonstration Project (WVDP) at West Valley, New York. Development studies were reco… more
Date: August 1992
Creator: Bray, L. A.; Elmore, M. R.; Carson, K. J.; Elovich, R. J.; Richardson, G. M. & Anderson, L. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Decontamination testing of radioactive-contaminated stainless steel coupons using a Ce(IV) solution

Description: The current Hanford Waste Vitrification Plant (HWVP) reference process for canister decontamination describes an air-atomized frit/water slurry blaster developed for the Defense Waste Processing Facility (DWPF). Westinghouse Hanford Company (WHC) identified incentives to evaluate potential HWVP cost savings from adapting the Ce(IV)/HNO{sub 3} canister decontamination approach being developed for the West Valley Demonstration Project (WVDP) at West Valley, New York. Development studies were reco… more
Date: August 1, 1992
Creator: Bray, L. A.; Elmore, M. R.; Carson, K. J.; Elovich, R. J.; Richardson, G. M. & Anderson, L. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Comparative study of aqueous and solvent methods for cleaning metals

Description: Studies were performed to determine the comparative effectiveness of solvent and aqueous detergent methods for cleaning various metals. The metals investigated included 304L stainless steel, beryllium, uranium-6.5 wt percent niobium alloy, and unalloyed uranium (/sup 238/U). The studies were initiated in response to governmental regulations restricting the use of some chlorinated solvents. Results showed that aqueous detergent cleaning was more effective than solvents, i.e. trichloroethylene an… more
Date: April 19, 1976
Creator: Briggs, J. L. & Goad, H. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Temperature and strain-rate effects on deformation mechanisms in irradiated stainless steel

Description: Analysis of the deformation microstructures in ion-irradiated stainless steel shows twinning to be the predominant deformation mode at room temperature. Dislocation channelling also occurs under slow strain rate conditions. Stresses required for twinning were calculated by the model of Venables and are compatible with observed yield stresses in neutron-irradiated material if loops are the principal twin source. Computation of the expected radiation hardening from the defect structure, based on … more
Date: November 1, 1994
Creator: Brimhall, J. L.; Cole, J. I.; Vetrano, J. S. & Bruemmer, S. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Synthesis and properties of nanostructures formed by sputter deposition

Description: Nanoscale grain structures can be created in many materials by high rate sputter deposition upon an appropriate substrate. By controlling the sputtering parameters of substrate temperature, deposition rate, and substrate bias, the scale of microstructure can vary from amorphous to grain sizes typical of conventionally treated material. The morphology and size of the microstructure will also be controlled by post-deposition heat treatment, particularly in the heat treatment of amorphous and meta… more
Date: January 1, 1991
Creator: Brimhall, J.L.; Henager, C.H. Jr.; Merz, M.D. & Bruemmer, S.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Creep-fatigue effects in structural materials used in advanced nuclear power generating systems

Description: Various aspects of time-dependent fatigue behavior of a number of structural alloys in use or planned for use in advanced nuclear power generating systems are reviewed. Materials included are types 304 and 316 stainless steel, Fe-2 1/4 Cr-1 Mo steel, and alloy 800H. Examples of environmental effects, including both chemical and physical interaction, are presented for a number of environments. The environments discussed are high-purity liquid sodium, high vacuum, air, impure helium, and irradiat… more
Date: January 1, 1980
Creator: Brinkman, C.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Overview of U. S. efforts directed towards development of mechanical properties data in support of FBR development

Description: The object of U.S. Breeder Reactor Program associated with primary and secondary circuit structural materials is to develop a design data base and associated design technology on commercially available material as well as new alloys. The commercially available materials include ASIA 316 and 304. Chromium--molybdenum steels and alloy 800H. (FS)
Date: January 1, 1978
Creator: Brinkman, C.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Adsorption of Pu(IV) Polymer onto 304L Stainless Steel

Description: 'The report, Technical Basis for Safe Operations with Pu-239 Polymer in NMS S Operating Facilities (F H Areas), (WSRC-TR-99-00008) was issued in an effort to upgrade the Authorization Basis (AB) for H Area facilities relative to nuclear criticality. At the time, insufficient data were found in the literature to quantify the adsorption of Pu polymer onto the surfaces of stainless steel tanks. Additional experimental or literature information on the adsorption of Pu(IV) polymer and its removal wa… more
Date: July 16, 1999
Creator: Bronikowski, M.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hydrogen Induced Ductility Losses in Austenitic Stainless Steel Welds

Description: The effect of hydrogen on the tensile behavior of austenitic stainless steel welds was studied in two AISI 300 series alloys and two nitrogen strengthened alloys. The microstructure of these welds typically contained several percent ferrite in an austenite matrix. Hydrogen was found to reduce the ductility of all welds; however, the severity of ductility loss decreased with increasing stacking fault energy, as observed in previous studies on wrought material. In the lowest stacking fault energy… more
Date: June 1, 1978
Creator: Brooks, J. A. & West, A. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Microstructures of laser deposited 304L austenitic stainless steel

Description: Laser deposits fabricated from two different compositions of 304L stainless steel powder were characterized to determine the nature of the solidification and solid state transformations. One of the goals of this work was to determine to what extent novel microstructure consisting of single-phase austenite could be achieved with the thermal conditions of the LENS [Laser Engineered Net Shape] process. Although ferrite-free deposits were not obtained, structures with very low ferrite content were … more
Date: May 22, 2000
Creator: Brooks, John A.; Headley, Thomas J. & Robino, Charles V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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