Now showing items 1-20 of 52

    • The Thermal Expansion of Pure Metals: Copper, Gold, Aluminum, Nickel, and Iron 

      Nix, F. C.; MacNair, D. (1941-08-08)
      Extremely accurate determinations of the linear thermal expansions have been made interferometrically from — 196°C to temperatures about +400°C for Al and +700°C for Fe, Ni, Cu and Au. The relationship between true thermal ...
    • Thermal Dilation of Copper 

      Eppelsheimer, D.S.; Penman, R. R. (1950-01-07)
      The prediction that certain cubic metals may not be precisely cubic throughout a range of temperature below their melting points led to the present investigation. Pure copper was chosen as the cubic metal to examine for ...
    • The composite piezoelectric oscillator is employed to measure the adiabatic elastic moduli of crystalline aluminum over the temperature interval 63°K to 773°K. 

      Sutton, Paul M. (1953-04-28)
      The composite piezoelectric oscillator is employed to measure the adiabatic elastic moduli of crystalline aluminum over the temperature interval 63'K to 773 K. The data permit a valid extrapolation to O'K. The Debye ...
    • Temperature Variation of the Elastic Constants of Cubic Elements. I. Copper 

      Overton, W.C.; Gaffney, John (1954-09-08)
      The ultrasonic pulse technique has been used in conjunction with a specially devised cryogenic technique to measure the velocities of 10-Mc/sec acoustic waves in copper single crystals in the range from 4.2°K to 300°K. The ...
    • The High Temperature Elastic Moduli of Aluminum 

      Gerlich, D; Fisher, E.S. (1968-11-04)
      Measurements of the elastic moduli of aluminum over the temperature range 300°–930°K are reported. These data together with those reported for T < 300°K, show that all elastic moduli, including the shear moduli, vary ...
    • Lattice Parameters, Densities, Expansion Coefficients and Perfection of Structure of Cu and Cu-In alpha Phase 

      Straumanis, M. E.; Yu, L. S. (1969-04-08)
      Spectroscopically pure Cu has a lattice parameter a25 = 3.61491 Å (corrected for refraction), and a thermal expansion coefficient [alpha] = 14.87 × 10-6°C-1 between 15 and 55°C. The measured density d25 is 8.9314 ± 0.0002 ...
    • Temperature Dependece of the Elastic Constants of Aluminum 

      Tallon, J.L.; Wolfenden, A. (1979-03-02)
      The single crystal elastic constants of aluminum have been measured using a piezoelectric composite oscillator from room temperature to just 20K below the melting point. The elastic moduli differ markedly from previous ...
    • Nature of Long-Range Order in Cu3+xAu1-x 

      Gehlen, P. C.; Cohen, J. B. (2003-11-17)
      The diffuse scattering and intensities of Bragg peaks from single crystals of Cu77Au23 and Cu78Au22 have been studied for various degrees of long‐range order. The results indicate that the excess Cu atoms, replacing Au in ...
    • Al-Co, Co-Fe Diffusion Mobilities, Ni/Rene88, IN718/Rene88 

      Campbell, Carelyn E.; Zhao, J-C.; Henry, M. F. (2013-05-05)
      A multicomponent diffusion mobility database for the Ni-rich fcc phase [2002Cam] is evaluated by comparing diffusion simulations to two experimental multicomponent Ni-base superalloy diffusion couples: Ni/Rene´-88 and ...
    • Mg-Al Interdiffusion and Phase Growth Kinetics 

      Kulkarni, Kaustubh N.; Luo, Alan A. (2013-05-07)
      Binary interdiffusion data as functions of composition in the Mg-Al system are essential in modeling kinetics of phase transformations in multicomponent Mg and Al alloys. Interdiffusion and phase growth kinetics were studied ...
    • Interdiffusion in the Mg-Al System and Intrinsic Diffusion in beta-Mg2Al3 

      Brennan, Sarah; Bermudez, Katrina; Kulkarni, Nagraj S.; Sohn, Yongho (2013-05-07)
      Solid-to-solid diffusion couples were assembled and annealed to examine the diffusion between pure Mg (99.96 pct) and Al (99.999 pct). Diffusion anneals were carried out at 573 K, 623 K and 673 K (300 C, 350 C and 400 C) ...
    • Al Impurity Diffusion in Mg 

      Brennan, Sarah; Warren, Andrew P.; Coffey, Kevin R.; Kulkarni, Nagraj; Todd, Peter; Kilmov, Mikhail; Sohn, Yongho (2013-05-07)
      The diffusion of Al in polycrystalline Mg (99.9%) was studied via depth profiling with secondary ion mass spectrometry in the temperature range of 573-673 K, utilizing the thin film method and thin film solution to the ...
    • Ni Self-Diffusion 

      Maier, K; Mehrer, H; Lessmann, E; Schüle, W (2013-06-26)
      Self-diffusion in nickel single crystals is measured between 813 and 1193 K using ion-beam sputtering as a microsectioning technique. Gaussian activity-depth profiles are observed over about three orders of magnitude in ...
    • 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.
    • 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 ...
    • DIFFUSION OF Ti44 AND V48 IN TITANIUM 

      Murdock, J. F.; Lundy, T.S; Stansbury, E.E (2013-07-03)
      The diffusion of Ti44 and V48 in the b.c.c. phase of iodide titanium has been studied over the temperature range 909-1550°C. The resulting Arrhenius-type plots show curvature with the apparent activation energies and ...
    • 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 ...
    • 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 ...
    • 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.