• 18216 Citations
1964 …2020

Research output per year

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Personal profile

Research Interests

  • Development of High-Temperature Cobalt-Based Superalloys

The goal of this research effort is to develop new high-temperatures cobalt-based superalloys, with the aim of supplanting nickel-based superalloys with gamma(f.c.c.) plus gamma-prime(L12 structure) microstructures, for use as turbine blades in commercial and military aircraft and land-based natural-gas-fired turbines for producing electricity. The driving force for this research is that the maximum operating temperature of nickel-based superalloys is reaching a plateau and hence their thermodynamic efficiency is also on a plateau. These alloys are studied using atom-probe tomography, scanning electron microscopy, microhardness and creep measurements, and three-dimensional dislocation dynamics (In cooperation with Prof. David C. Dunand).

  • Five-Dimensional Correlative Studies of the Temporal Evolution of Nickel-Aluminum Alloys on a Nano- to Subnanoscale

The focus of this research is on the temporal evolution of the nucleation, growth and coarsening gamma-prime (L12 structure) precipitates in Ni-Al alloys utilizing three-dimensional atom-probe tomography, scanning and transmission electron microscopies, monovacancy mediated lattice-kinetics Monte Carlo simulations. Phase separation in multicomponent alloys is basic to understanding and predicting microstructures of all high-temperature alloys.

  • High-Temperature Aluminum Alloys

The aim of this research project is to increase the maximum operating temperature of aluminum alloys. The highest operating temperature of commercial Al alloys in about 463 K. We have developed Al alloys that can operate at temperatures as high as 698 K for extended periods of time.Our alloys can be used to replace the front brake rotors in vehicles, thereby decreasing their weight and helping to make them more fuel-efficient. (In cooperation with Prof. David C. Dunand).

  • A High Strength and High Toughness Steel

We are working on a high-strength and high-toughness steels for Naval applications. This is a low-carbon 10 wt. % Ni steel, which is subjected to QLT (quench, familiarization, temperature) treatment that yields steel with about 18 % austenite, which is strong, tough, projectile resistant and weldable.

  • Superconducting Radio Frequency (SRF) cavities

This research is performed in cooperation with Fermi National Accelerator Laboratory. The goal is to improve the maximum electric fields that the SRF cavities sustain.

 

Education/Academic qualification

Physical Metallurgy, PhD, University of Illinois at Urbana-Champaign

… → 1965

Physical Metallurgy, MS, New York University

… → 1962

Physical Metallurgy, BS, New York University

… → 1960

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Grants

  • Research Output

    Atom probe tomography of space-weathered lunar ilmenite grain surfaces

    Greer, J., Rout, S. S., Isheim, D., Seidman, D. N., Wieler, R. & Heck, P. R., Feb 1 2020, In : Meteoritics and Planetary Science. 55, 2, p. 426-440 15 p.

    Research output: Contribution to journalArticle

    Open Access
  • A transmission electron microscopy and atom-probe tomography study of martensite morphology and composition in a dual-phase steel

    An, D., Baik, S. I., Ren, Q., Jiang, M., Zhu, M., Isheim, D., Krakauer, B. W. & Seidman, D. N., Apr 2020, In : Materials Characterization. 162, 110207.

    Research output: Contribution to journalArticle

  • 1 Scopus citations

    Effect of Cr additions on a γ-γ’ microstructure and creep behavior of a Co-based superalloy with low W content

    Ng, D. S., Chung, D. W., Toinin, J. P., Seidman, D. N., Dunand, D. C. & Lass, E. A., Mar 19 2020, In : Materials Science and Engineering A. 778, 139108.

    Research output: Contribution to journalArticle

  • Effects of Cr on the properties of multicomponent cobalt-based superalloys with ultra high γ’ volume fraction

    Chung, D. W., Toinin, J. P., Lass, E. A., Seidman, D. N. & Dunand, D. C., Aug 15 2020, In : Journal of Alloys and Compounds. 832, 154790.

    Research output: Contribution to journalArticle

  • 2 Scopus citations

    Effects of Mn and Mo Micro-additions on Al–Zr–Sc–Er–Si Mechanical Properties

    Shu, S., De Luca, A., Seidman, D. N. & Dunand, D. C., Jan 1 2020, Light Metals 2020. Tomsett, A. (ed.). Springer, p. 312-317 6 p. (Minerals, Metals and Materials Series).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution