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  1. No Access

    Article

    Solidification of Ni-Re Peritectic Alloys

    Differential thermal analysis (DTA) and microstructural and microprobe measurements of DTA and as-cast Ni-Re alloys with compositions between 0.20 and 0.44 mass fraction Re provide information to resolve diffe...

    W. J. Boettinger, D. E. Newbury… in Metallurgical and Materials Transactions A (2019)

  2. No Access

    Article

    Examination of Multiphase (Zr,Ti)(V,Cr,Mn,Ni)2 Ni-MH Electrode Alloys: Part I. Dendritic Solidification Structure

    The solidification microstructures of three nine-element Zr-Ni–based AB2 type C14/C15 Laves hydrogen storage alloys are determined. The selected compositions represent a class of alloys being examined for usage a...

    W.J. Boettinger, D.E. Newbury, K. Wang… in Metallurgical and Materials Transactions A (2010)

  3. No Access

    Article

    Efficient phase diagram information and computational thermodynamics

    Industries that process and use metals, from microelectronics to aerospace, can use phase equilibria data for designing and processing complex alloys (three or more components) and diffusion data for controlli...

    U. R. Kattner in Journal of Phase Equilibria and Diffusion (2006)

  4. No Access

    Article

    Revised thermodynamic description for the Co-Mo system

    A. V. Davydov, U. R. Kattner in Journal of Phase Equilibria (2003)

  5. No Access

    Article

    On differential thermal analyzer curves for the melting and freezing of alloys

    Using a heat-flow model of a differential thermal analyzer and thermal characteristics obtained by fitting experimental results for a pure metal, the response of the differential thermal analyzer is modeled fo...

    W. J. Boettinger, U. R. Kattner in Metallurgical and Materials Transactions A (2002)

  6. No Access

    Article

    Determination of the CoTi congruent melting point and thermodynamic reassessment of the Co-Ti system

    New experimental results and a thermodynamic re-evaluation of the Co-Ti system are presented. Using differential thermal analysis (DTA) and a visual observation-of-melting (VOM) technique, the ≈220 K inconsist...

    A. V. Davydov, U. R. Kattner, D. Josell… in Metallurgical and Materials Transactions A (2001)

  7. No Access

    Article

    Moving the pulsed heating technique beyond monolithic specimens: Experiments with coated wires

    Pulsed heating experiments that measure high-temperature thermophysical properties using pyrometric measurement of the temperature–time history of metal specimens rapidly heated by passage of electric current ...

    D. Josell, D. Basak, J. L. McClure, U. R. Kattner… in Journal of Materials Research (2001)

  8. No Access

    Article

    Alpha case thickness modeling in investment castings

    The alpha case thickness at the surface of a Ti-6Al-4V (wt pct) step wedge investment casting has been measured and successfully predicted. The prediction uses temperature-time results obtained from a heat flo...

    W. J. Boettinger, M. E. Williams… in Metallurgical and Materials Transactions B (2000)

  9. No Access

    Article

    Experimental and thermodynamic assessment of Sn-Ag-Cu solder alloys

    Sn-rich alloys in the Sn-Ag-Cu system are being studied for their potential as Pb-free solders. Thus, the location of the ternary eutectic involving L, (Sn), Ag3Sn and Cu6Sn5 phases is of critical interest. Phase...

    K. -W. Moon, W. J. Boettinger, U. R. Kattner… in Journal of Electronic Materials (2000)

  10. No Access

    Article

    Application of Laser Polarimetry to the Measurement of Specific Heat Capacity and Enthalpy of the Alloy 53Nb–47Ti (mass%) in the Temperature Range 1600 to 2000 K by a Millisecond-Resolution Pulse Heating Technique

    The determination of the specific heat capacity, enthalpy, and electrical resistivity of the alloy 53Nb–47Ti (mass%) in the temperature range 1600 to 2000 K is described. The method is based on rapid resistive...

    D. Basak, U. R. Kattner, J. L. McClure, D. Josell… in International Journal of Thermophysics (2000)

  11. No Access

    Article

    A thermodynamic assessment of the Ni-Al-B system

    The thermodynamics of the Ni-Al-B system are assessed based on available literature data. Both the Ni-B and Al-B systems were revised to treat B as an interstitial element in a face-centered cubic structure, r...

    C. E. Campbell, U. R. Kattner in Journal of Phase Equilibria (1999)

  12. No Access

    Article

    Thermodynamic assessment of the Co-Mo system

    Experimental thermochemical and phase diagram data for the Co-Mo system were assessed. A consistent thermodynamic description, using a Redlich-Kister model for the solution phases and sublattice and line-compo...

    A. Davydov, U. R. Kattner in Journal of Phase Equilibria (1999)

  13. No Access

    Article

    Modeling of micro- and macrosegregation and freckle formation in single-crystal nickel-base superalloy directional solidification

    The formation of macrosegregation and freckles by multicomponent thermosolutal convection during the directional solidification of single-crystal Ni-base superalloys is numerically simulated. The model links a...

    M. C. Schneider, J. P. Gu, C. Beckermann… in Metallurgical and Materials Transactions A (1997)

  14. No Access

    Article

    A reassessment of the calculated Ni-Nb phase diagram

    A revised calculation of the Ni-Nb (nickel-niobium) phase diagram includes realistic enthalpy of formation values for the intermetallic phases that compare with experimental values, a more accurate crystallogr...

    A. Bolcavage, U. R. Kattner in Journal of Phase Equilibria (1996)

  15. No Access

    Article

    The Al-Bi-Cu system

    U. R. Kattner, B. P. Burton in Journal of Phase Equilibria (1992)

  16. No Access

    Article

    Thermodynamic Assessment and Calculation of the Ti-Al System

    A thermodynamic description of the Ti-Al system has been developed. Three different analytical descriptions were used to describe the three different types of phases occurring in the Ti-Al system: the stoichio...

    U. R. Kattner, J. -C. Lin, Y. A. Chang in Metallurgical Transactions A (1992)

  17. No Access

    Article

    The Al-Cu-Pb system (aluminum-copper-lead)

    B. P. Burton, U. R. Kattner in Journal of Phase Equilibria (1992)

  18. No Access

    Article

    The stable and metastable Ti-Nb phase diagrams

    The phase transformations which occur in the Ti-Nb binary alloy system have been discussed in two recent papers. The phase relationships were investigated by varying alloy composition and thermal history. In t...

    D. L. Moffat, U. R. Kattner in Metallurgical Transactions A (1988)