Now showing items 1-20 of 366

    • 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 ...
    • Al-Mg COST 507 Thermochemical database for light metal alloys 

      Ansara, I; Dinsdale, AT; Rand, MH (1998-07)
      Bearing in mind the alloy categories defined by industrial partners at the beginning of the Action, a matrix was drawn up to define the binary systems forming the building blocks for the evaluation of higher-order systems. ...
    • 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 ...
    • GeTe-PbTe PbS-PbTe PbSe-PbS PbTe-PbSe PbTe-SnTe SnTe-GeTe mixing and coherency strain energies 

      Doak, Jeff W.; Wolverton, C. (2012-10-15)
      Nanostructures formed by phase separation improve the thermoelectric figure of merit in lead chalcogenide semiconductor alloys, with coherent nanostructures giving larger improvements than incoherent nanostructures. However, ...
    • Au Replication data tensile deformation gold nanowire 

      Tavazza, Francesca (2013-01-31)
      Under tensile deformation, Au nanowires (NWs) elongate to form single atom chains via a series of intermediate structural transformations. These intermediate structures are investigated using static density functional ...
    • AlN–GaN; GaN–InN; AlN–InN 

      Burton, Benjamin P. (2013-01-31)
      First principles phase diagram calculations were performed for the wurtzite-structure quasibinary systems AlN–GaN, GaN–InN, and AlN–InN.
    • Al-Cr-Ni Thermodynamic Re-Assessment of the Ternary System 

      Dupin, N.; Ansara, I.; Sundman, B. (2013-01-31)
      A re-assessment of the ternary system A1-Cr-Ni following Dupin's thesis work using a single Gibbs energy function for the gamma and gamma prime phases is presented taking into account new experimental liquidus temperatures. ...
    • Ag-Al Functional Description 

      Du, Zeting; Jing, Zhan-Peng; Li, Changrong; Niu, Chunji (2013-01-31)
      The energy expressions for GP zones in the Al–Ag binary system, including the ε-state and the η-state ones, are established by combining the essential Gibbs energy for the matrix alloy with the interfacial energy and the ...
    • Al_Cr_Ni Diffusion Mobilities in Gamma Prime and B2 

      Campbell, C.E. (2013-02-11)
      This work presents the assessment of the diffusion mobilities in both the γ′ (Ni3Al-L12) and B2 (NiAl) phases in the Ni–Al–Cr system utilizing the phenomenological model developed by Helander and Ågren. Available experimental ...
    • Gd–Mg–Sm Thermodynamic Description 

      Du, Z.; Li, C. (2013-03-28)
      The Mg–Sm, Gd–Sm and Gd–Mg–Sm systems were thermodynamically optimized using the CALPHAD technique. The solution phases, liquid, bcc, hcp and rhombohedral, were described by the substitutional solution model. The isostructural ...
    • Co–Zr Thermodynamic optimization 

      Durga, A.; Kumar, K.C. (2013-03-28)
      The constitutional and thermochemical information of the Co–Zr system is modelled using the Calphad method to obtain a reliable thermodynamic description of the system. Appropriate sublattice models are chosen to describe ...
    • Cs–In Thermodynamic Modeling 

      Lee, S.H.; Liu, Z.-K. (2013-03-28)
      Thermodynamic description of the Cs–In system has been developed by the CALPHAD modeling combined with first-principles calculations. The calculated phase diagram of the Cs–In system is compared with the experimental one ...
    • Cr–Ge Thermodynamic description 

      Du, Y.; Liu, Y.Q. (2013-03-28)
      he Cr–Ge binary system was thermodynamically optimized using the CALPHAD method. The liquid phase was described by means of an associate solution model. The BCC terminal solid solution was described by the substitutional ...
    • Al-Fe Thermodynamic Assessment 

      Sundman, Bo; Ohnuma, Ikuo; Dupin, Nathalie; Kattner, Ursula R; Fries, Suzana G. (2013-03-28)
      The Al–Fe system is important for many alloys and the new interest in iron aluminides makes it necessary to improve the modeling of the different ordered forms on the body-centered cubic lattice in this system. This has ...