NUMAKURA Hiroshi - Research achievements

1. Fundamentals and applications of mechanical spectroscopy

Invited lectures

• The present and future of mechanical spectroscopy (in Japanese)
  The 200th Anniversary Symposium of the 133rd Committee of the Japan Society for Promotion of Science, 'New developments of materials science research'
  12-13 December 2008, Tokyo

• Application of mechanical spectroscopy to studies of atomic diffusion in ordered compounds
  The 15th International Conference on Internal Friction and Mechanical Spectroscopy − ICIFMS-15
  20-25 July 2008, Perugia, Italy

• Mechanical spectroscopy of metallic glasses (in Japanese)
  The 197th Meeting of the 133rd Committee of the Japan Society for Promotion of Science
  18 April 2008, Tokyo

• Studies of crystalline and non-crystalline materials by mechanical spectroscopy (in Japanese)
  Materials Forum of Tokai Division of the Japan Institute of Metals
  24 January 2006, Nagoya

• Mechanical relaxation due to interstitial solutes in metals
  The 2nd International School of Mechanical Spectroscopy − MS-2
  3-8 December 2000, Krakow - Krynica, Poland

Publications

• Application of mechanical spectroscopy to studies of atomic diffusion in ordered compounds
  H. Numakura, K. Nishi
  Materials Science and Engineering A, 521-522, 34-38 (2009). [View on-line]

• Magnetoelastic damping in Fe−Ga solid-solution alloys
  M. Ishimoto, H. Numakura, M. Wuttig
  Materials Science and Engineering A, 442 (1-2), 195-198 (2006). [View on-line]

• Diffusion measurements by anelastic relaxation spectroscopy
  Numakura Hiroshi
  in Diffusion Study in Japan, edited by Y. Iijima, Research Signpost, Trivandrum, India (2006), Chapter 13. [Book info]

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2. Thermodynamics, atomic defects and diffusion

Invited lectures

• Point defects and diffusion in ordered alloys and intermetallic compounds
  Gordon Research Conference on Physical Metallurgy 2006
  23 - 28 July 2006, Holderness, New Hampshire, USA.

• Diffusional jumps of intrinsic atomic defects in ordered alloys through anelastic effects
  The 6th International Conference on Diffusion in Materials &minus DIMAT 2004
  18 - 23 July 2004, Krakow, Poland.

• Point defects and diffusion in intermetallic compounds (in Japanese)
  The 178th Meeting of the 133rd Committee of the Japan Socieity for Promotion of Science
  22 July 2003, Kyoto

• Effect of non-stoichiometry on diffusion in L1₂ ordered intermetallic compounds
  International Symposium on Non-stoichiometric Ceramics and Intermetallics, organised by Engineering Conferences International
  30 September - 5 October 2001, Il Ciocco, Italy.

• Diffusion in Ni₃Al, Ni₃Ga and Ni₃Ge
  The 5th International Conference on Diffusion in Materials &minus DIMAT 2000
  16 - 21 July 2000, Paris, France.

• Point defects and diffusion in nickel-based L1₂ ordered compounds
  International Conference on Solid-Solid Phase Transformations &minus PTM'99
  24 - 28 May 1999, Kyoto, Japan.

Publications

• Application of mechanical spectroscopy to studies of atomic diffusion in ordered compounds
  H. Numakura, K. Nishi
  Materials Science and Engineering A, 521-522, 34-38 (2009). [View on-line]

• Combined ab initio/CALPHAD modeling of fcc-based phase-equilibria in the Ir−Nb system
  Taichi Abe, Ying Chen, Yoko Yamabe-Mitarai, Hiroshi Numakura
  Computer Coupling of Phase Diagrams and Thermochemistry, 32 (2), 353-360 (2008). [View on-line]

• Microstructure, strength and electrical conductivity of Cu−3 at.% Ti alloys aged in a hydrogen atmosphere (in Japanese)
  Semboshi S., Nishida T., Numakura H., Konno T.
  Journal of Japan Research Institute for Advanced Copper-base Materials and Technologies, 47 (1), 165-170 (2008).

• Point defects, atom jumps and diffusion
  Wolfgang Pueschl, Hiroshi Numakura, Wolfgang Pfeiler
  in Alloy Physics: A Comprehensive Reference, edited by Wolfgang Pfeiler, Wiley-VCH, Weinheim (2007), Chapter 5. [Book info]

• Atomic migration in bulk and thin film L1₀ alloys: experiments and molecular dynamics simulations
  V. Pierron-Bohnes, R. V. P. Montsouka, C. Goyhenex, T. Mehaddene, L. Messad, H. Bouzar, H. Numakura, K. Tanaka, B. Hennion
  Defect and Diffusion Forum, 263, 41-50 (2007). [View on-line]

• Chemical diffusion in the iridium-rich A1 and L1₂ phases in the Ir−Nb system
  Hiroshi Numakura, Tatsuru Watanabe, Makoto Uchida, Yoko Yamabe-Mitarai, Eisuke Bannai
  Journal of Phase Equilibria and Diffusion, 27 (6), 638-643 (2006). [View on-line]

• Atomic jumps and diffusion in Ni₃Al studied by anelastic relaxation measurements
  H. Numakura, K. Nishi
  Materials Science and Engineering A, 442 (1-2), 59-62 (2006). [View on-line]

• Atomic migration and ordering energies in FePd: Measurement and modeling
  T. Mehaddene, O. Adjaoud, R. Kozubski, K. Tanaka, H. Numakura, J. M. Sanchez, Ch. Issro, W. Pfeiler, V. Pierron-Bohnes
  Scripta Materialia, 53 (4), 435-440 (2005). [View on-line]

• On the stability of chemical order in small ordered-alloy particles
  H. Numakura, T. Ichitsubo
  Philosophical Magazine, 85 (8), 855-865 (2005). [View on-line]

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3. Kinetic processes and dynamics of atom movements in metallic glasses

Invited lectures

• Mechanical spectroscopy of metallic glasses (in Japanese)
  The 197th Meeting of the 133rd Committee of the Japan Society for Promotion of Science
  18 April 2008, Tokyo

• Viscoelasticity and dynamic glass transition of bulk metallic glasses studied by dynamic shear modulus measurements
  The 5th International Conference on Processing and Manufacturing of Advanced Materials &minus Thermec 2006
  4 - 8 July 2006, Vancouver, Canada.

Publications

• Dynamic viscoelasticity of Zr−Al−Ni−Cu metallic glass in the glass transition region
  Y. Ueno, M. Hojo, H. Numakura, T. Ichitsubo, J. Saida
  Materials Science and Engineering A, 521-522, 232-235 (2009). [View on-line]

• Glass-to-liquid transition in zirconium and palladium based metallic glasses
  Tetsu Ichitsubo, Eiichiro Matsubara, Hiroshi Numakura
  Materials Science and Engineering A, 449-451, 506-510 (2007). [View on-line]

• Dynamic glass transition in Zr−Al−Ni−Cu bulk metallic glass
  M. Hojo, H. Numakura
  Materials Science and Engineering A, 442 (1-2), 268-272 (2006). [View on-line]

• Glass-liquid transition in a less stable metallic glass
  Tetsu Ichitsubo, Eiichiro Matsubara, Hiroshi Numakura, Katsushi Tanaka, Nobuyuki Nishiyama, Ryuichi Tarumi
  Physical Review B, 72 (5), 052201 (1-4) (2005). [View on-line]

4. Behaviour of interstitial solutes and solute-solute interaction in metals

Invited lectures

• Anelastic effects due to interstitial solute atoms in face-centred cubic metals
  The 12th International Conference on Internal Friction and Ultrasonic Attenuation in Solids − ICIFUAS-12
  19 - 23 July 1999, Buenos Aires, Argentina.

• The Snoek relaxation in ternary body-centred cubic metals
  The 11th International Conference on Internal Friction and Ultrasonic Attenuation in Solids − ICIFUAS-11
  7 - 11 July 1996, Futuroscope, France.

Publications

• Interaction between substitutional and interstitial solute atoms in α iron studied by isothermal mechanical spectroscopy
  X.-S. Guan, Y. Nishizawa, K. Okamura, H. Numakura, M. Koiwa
  Materials Science and Engineering A, 370 (1-2), 73-77 (2004). [View on-line]

• The solubility and diffusion of carbon in palladium
  H. Yokoyama, H. Numakura, M. Koiwa
  Acta Materialia, 46 (8), 2823-2830 (1998). [View on-line]

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5. Mechanical properties and crystal plasticity

Publications

• Dislocations in metals and alloys with the hexagonal close-packed structure
  H. Numakura, M. Koiwa
  Metallurgical Science and Technology, 16 (1-2), 4-19 (1998).

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