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  1. No Access

    Article

    Solubility extension and phase formation in gas-condensed Co–W nanoclusters

    Co–W alloy clusters with extended solubility of W in hcp Co were produced by inert-gas condensation. The structural state of the as-deposited Co–W clusters was found to be critically dependent on processing pa...

    Farhad Golkar, M. J. Kramer, Y. Zhang, R. Skomski… in Journal of Nanoparticle Research (2013)

  2. No Access

    Article

    Time-resolved studies of the order–disorder phase transformations in rare-earth–transition metal intermetallics with 2-17 stoichiometry

    High-temperature order–disorder transformations in R2T17 and R2T17-M-C intermetallics with R = Pr, Sm, Dy, Tb; T = Co, Fe; and M = Zr, Nb were studied utilizing time-resolved synchrotron x-ray diffraction at the ...

    Y.Y. Kostogorova-Beller, M.J. Kramer, J.E. Shield in Journal of Materials Research (2008)

  3. No Access

    Article

    Rapid Solidification of Sm-Co Permanent Magnets

    In this article, we report the microstructural evolution of rapidly solidified Sm-Co alloys from 4 to 16 at. pct Sm. We have observed a wide variety of phase formation and microstructures, ranging from primary...

    V.K. RAVINDRAN, J.E. SHIELD in Metallurgical and Materials Transactions A (2007)

  4. No Access

    Article

    Effect of combined metal-carbon additions on the microstructure and structure of Sm2Fe17

    The effect of combined alloying additions on the structure and scale of rapidly solidified Sm–Fe alloys was investigated. Transition metal additions tend to promote the formation of the disordered TbCu7-type stru...

    B. E. Meacham, J. E. Shield in Journal of Materials Research (2003)

  5. No Access

    Article

    Production of fine Nd-Fe-B alloy powder by pulsed plasma atomization

    Extremely fine (<10 μm) Nd-Fe-B powder was generated by pulsed plasma atomization processing. The number average was just over 3 μm, as determined by computer-assisted scanning electron microscopy analysis of ...

    J. E. Shield, S. Christensen, R. W. Kincaid… in Journal of Materials Science (2003)

  6. No Access

    Article

    Chemical Ordering and Microstructural Affects on Magnetic Properties of Sm2Fe17 and Sm2Fe17Nx

    The effect of chemical order and defect structure on the magnetization process in Sm2Fe17 and Sm2Fe17Nx has been investigated. In Sm2Fe17, chemical disorder results in the development of random anisotropy and a s...

    B. E. Meacham, K. W. Dennis, R. W. Mccallum, J. E. Shield in MRS Online Proceedings Library (1999)

  7. No Access

    Article

    Mechanical properties of Al-Cu-Fe-based quasicrystalline coatings

    J. E. SHIELD, J. A. CAMPBELL, D. J. SORDELET in Journal of Materials Science Letters (1997)

  8. No Access

    Article

    Deformation Characteristics of Quasicrystalline Al–Cu–Fe Alloys

    The deformation characteristics of icosahedral Al–Cu–Fe quasicrystals were determined by high temperature creep experiments between 680 and 720 °C and 15 and 41 MPa. The deformation process was determined to b...

    J. E. Shield, M. J. Kramer in Journal of Materials Research (1997)

  9. No Access

    Article

    Deformation-induced planar defects in Al–Cu–Fe quasicrystals

    Planar defects were observed in a hot isostatically pressed Al–Cu–Fe alloy. The defects were determined to be perpendicular to the fivefold direction. They were also found to be regions where the quasiperiodic...

    J. E. Shield, M. J. Kramer in Journal of Materials Research (1997)

  10. No Access

    Article

    Plastic deformation in icosahedral Al–Pd–Mn alloys

    The deformation characteristics of icosahedral Al70Pd21.5Mn8.5 have been investigated by high temperature creep experiments, and the resultant microstructures have been examined by transmission electron microscop...

    J. E. Shield, M. J. Kramer, R. W. McCallum in Journal of Materials Research (1994)

  11. No Access

    Article

    Plastic deformation in an Al–Cu–Fe icosahedral alloy

    Al–Cu–Fe quasicrystalline alloys have been deformed by high-temperature creep between 680 and 740 °C. Deformations greater than 30% were achieved without cracking. Analysis of the data in the quasi-steady stat...

    J. E. Shield, M. J. Kramer, R. W. McCallum in Journal of Materials Research (1993)

  12. No Access

    Chapter

    A Face Centered Icosahedral Approximant Phase with Local Icosahedral Symmetry

    An approximant phase in the Al-Cu-Ru system, isostructural with α—AIMnSi, is described and compared with the face-centered icosahedral phase. The existence of this phase confirms the notion that the structures...

    J. E. Shield, M. J. Kramer, R. W. McCallum… in Physics and Chemistry of Finite Systems: F… (1992)