DSpace at My University: Recent submissions

Now showing items 361-380 of 445

    • Color Metallography 

      Mario Epler (2013-12-03)
      Precipitation reactions are of great importance in engineering alloys. This general phenomenon occurs in many different alloy systems when one phase transforms into a mixed-phase system as a result of cooling from high ...

    • Quantitative Characterization and Representation of Global Microstructural Geometry 

      Arun M. Gokhale (2013-12-03)
      It is the central precept of materials science that processing governs microstructure and the microstructure influences the properties and performance of materials. Consequently, quantitative characterization and mathematical ...

    • Cold Extrusion 

      M. Bhupatiraju and R. Greczanik (2013-12-03)
      COLD EXTRUSION is a push-through compressive forming process with the starting material (billet/slug) at room temperature. During the process, however, the deforming material undergoes deformation heating (conversion of ...

    • Alloy and Temper Designation Systems for Aluminum and Aluminum Alloys 

      R.B.C. Cayless (2013-12-03)
      SYSTEMS FOR DESIGNATING aluminum and aluminum alloys that incorporate the product form (wrought, casting, or foundry ingot), and its respective temper (with the exception of foundry ingots, which have no temper classification) ...

    • 3D microstructure reconstruction of polycrystalline nickel micro-tension test 

      Shade, Paul A; Groeber, Michael A; Schuren, Jay C; Uchic, Michael D (2013-11-01)
      This article describes a new approach to characterize the deformation response of polycrystalline metals using a combination of novel micro-scale experimental methodologies. An in-situ scanning electron microscope (SEM)-based ...

    • Al Self-Diffusion Fradin, Rowland 1967 

      Rowland, T. J.; Fradin, F. Y. (2013-10-01)
      Using a radio‐frequency field pulse technique which enables measurement of slow atomic diffusion by means of nuclear magnetic resonance we have obtained, for nominally 6–9's pure Al, an activation energy for self‐diffusion ...

    • Mg Self-Diffusion Pavlinov 1968 

      Pavlinov, L. V.; Gladyshev, A. M.; Bykov, V. N. (2013-08-29)
      It is found that the parameters of self-diffusion and carbon diffusion in calcium are in good agreement with the general regularities for self-diffusion in pure metals and interstitial impurity diffusion in metals with a ...

    • Mg Self-Diffusion 

      Shewmon, P. G.; Rhines, F. N. (2013-08-09)
      The determination of the self-diffusion coefficient of magnesium has been made possible recently by discovery of a radioactive isotope, Mg-28 having a half-life of 21.3 hr, and subject to manufacture in useful quantity.

    • Mg Self-Diffusion 

      Combronde, J.; Brebec, G. (2013-08-09)
      The self-diffusion of magnesium along the c-axis and perpendicular to it has been investigated in the temperature range from 500 to 630 C.

    • In–Eu and In–Yb Thermodynamic assessments 

      Gao, F.; Friedl, J.; Liu, X.J.; Wang, C.P.; Wang, S.J. (2013-07-08)
      Based on the experimental data including thermodynamic properties and phase equilibria, thermodynamic assessments of the In–Eu and In–Yb binary systems have been carried out by using the CALPHAD (Calculation of Phase ...

    • Ag–Cd and Ag–Sn diffusion and atomic mobilities 

      Du, Y.; Liu, Y.; Sheng, G.; Wang, J.; Zhang, L. (2013-07-08)
      Diffusion in Ag-based solders is a practical topic that has attracted world-wide attention. With the available experimental data in the literature, the atomic mobilities of Ag, Cd and Sn in fcc Ag–Cd and Ag–Sn alloys are ...

    • Cr Self-Diffusion Paxton Gondolf 1959 

      Paxton, H. W.; Gondolf, E. G. (2013-07-08)
      Measurement of the radioactivity of the surface reduced by partial diffusion of the radioactive chromium as well a measurement of the radioactivity after gradual working off of thin surface films, after coating radioactive ...

    • Cr Self-Diffusion Askill and Tomlin 1965 

      Askill, J.; Tomlin, D. H. (2013-07-08)
      Self-diffusion measurements have been made in the temperature range 1000 degrees c to 1550 degrees c in order to resolve some uncertainties arising from previously published data from several separate investigations covering ...

    • Cr Self-Diffusion Askill 1971 

      Askill, J. (2013-07-08)
      Self diffusion of Cr-51 in pure chromium, Cr +20 wt% Ni, Cr +44wt% Ni, and Cr +65%wt Ni has been measured over the temperature ranges of 1000 to 1900, 1000 to 1525, and 900 to 1350 degrees C, respectively.

    • Self-Diffusion in Solid Chromium 

      Hagel, W. C. (2013-07-08)

    • Cr Self-Diffusion Mundy 1981 

      Mundy, J. N.; Hoff, H. A.; Pelleg, J.; Rothman, S. J.; Nowicki, L. J.; Schmidt, F. A. (2013-07-03)
      Self-diffusion in chromium single crystals has been measured over the temperature range 1073 to 1446 K. These data, when combined with earlier measurements from this laboratory over the. range 1370—2090 K, yield a plot ...

    • Cr Self-Diffusion Mundy 1976 

      Mundy, J. N.; Tse, C. W.; McFall, W. D. (2013-07-03)
      The diffusion of "Cr in chromium has been measured between 1100 and 1820'C, and the data fit the Arrhenius relation D = 970exp(—104000/R T) cm'sec '. Isotope-effect measurements, using isotopes "Cr and "Cr, have been ...

    • On the Anomalous Self-Diffusion in B.C.C. Titanium 

      Kohler, U; Herzig, C.H (2013-07-03)
      Self-diffusion of the Ti44 is measured in Beta-Titanium under UHV conditions int eh whole range of existence of the bcc phase. The Arrhenius plot shows a strong upward curvature in agreement with previous investigations ...

    • Interrelationship between the Diffusion Behaviour and the phase Transformation Characteristics 

      Tiwari, GP; Hirano, Ken-ichi (2013-07-03)
      It has been observed that the metals which exhibit anomalous diffusion behaviour are all allotropic in nature. A hypothesis to rationalise this interrationship between the diffusion behaviour and the phase transformation ...

    • Self-Diffusion and fast cobalt impurity diffusion in the bulk and in grain boundaries of hexagonal titanium 

      Herzig, Christian; Willecke, Ralf; Vieregge, Klaus (2013-07-03)
      Bulk Self-Diffusion was measure in alpha-Titanium single crystals between 776 and 1132 K using the radiotracer Ti44 and ion beam sputtering for profile sectioning.