Tadakatsu Ohkubo

Research.com Recognitions

• 2022 - Research.com Materials Science in Japan Leader Award

Overview

Best Publications

• Effect of Zn additions on the age-hardening of Mg-2.0Gd-1.2Y-0.2Zr alloys

  T. Honma;T. Ohkubo;S. Kamado;K. Hono;K. Hono

  665
  Citations

• Grain boundary and interface chemistry of an Nd–Fe–B-based sintered magnet

  H. Sepehri-Amin;T. Ohkubo;T. Shima;K. Hono

  461
  Citations

• The mechanism of coercivity enhancement by the grain boundary diffusion process of Nd–Fe–B sintered magnets

  H. Sepehri-Amin;T. Ohkubo;K. Hono

  358
  Citations

• Effect of post-sinter annealing on the coercivity and microstructure of Nd-Fe-B permanent magnets

  W.F. Li;T. Ohkubo;K. Hono

  356
  Citations

• Chemistry of nanoscale precipitates in Mg–2.1Gd–0.6Y–0.2Zr (at.%) alloy investigated by the atom probe technique

  T. Honma;T. Ohkubo;K. Hono;K. Hono;S. Kamado

  345
  Citations

• Enhanced age hardening response by the addition of Zn in Mg–Sn alloys

  T.T. Sasaki;K. Oh-ishi;T. Ohkubo;K. Hono;K. Hono

  321
  Citations

• High-coercivity ultrafine-grained anisotropic Nd–Fe–B magnets processed by hot deformation and the Nd–Cu grain boundary diffusion process

  H. Sepehri-Amin;T. Ohkubo;S. Nagashima;M. Yano

  318
  Citations

• Plasticity and structural instability in a bulk metallic glass deformed in the supercooled liquid region

  T.G. Nieh;J. Wadsworth;C.T. Liu;T. Ohkubo

  303
  Citations

• Bulk mechanical alloying of Cu–Ag and Cu/Zr two-phase microstructures by accumulative roll-bonding process

  S. Ohsaki;S. Ohsaki;S. Kato;N. Tsuji;T. Ohkubo

  302
  Citations

• Demonstration of half-metallicity in fermi-level-tuned Heusler alloy Co2FeAl0.5Si0.5 at room temperature.

  R. Shan;H. Sukegawa;W. H. Wang;M. Kodzuka

  298
  Citations

• In situ formed two-phase metallic glass with surface fractal microstructure

  A.A. Kündig;M. Ohnuma;D.H. Ping;T. Ohkubo

  289
  Citations

• Coercivity enhancement of hydrogenation–disproportionation–desorption–recombination processed Nd–Fe–B powders by the diffusion of Nd–Cu eutectic alloys

  H. Sepehri-Amin;H. Sepehri-Amin;T. Ohkubo;T. Nishiuchi;S. Hirosawa

  273
  Citations

• Phase separation in Cu43Zr43Al7Ag7 bulk metallic glass

  J.C. Oh;T. Ohkubo;Y.C. Kim;E. Fleury

  258
  Citations

• Effect of Nd content on the microstructure and coercivity of hot-deformed Nd–Fe–B permanent magnets

  J. Liu;J. Liu;H. Sepehri-Amin;T. Ohkubo;K. Hioki

  251
  Citations

• The microstructure of sintered Sm (Co0.72Fe0.20Cu0.055Zr0.025) (7.5) permanent magnet studied by atom probe

  X.Y Xiong;T Ohkubo;T Koyama;K Ohashi

  247
  Citations

• Structure and chemical compositions of the grain boundary phase in Nd-Fe-B sintered magnets

  T.T. Sasaki;T. Ohkubo;K. Hono

  241
  Citations

• Formation of non-ferromagnetic grain boundary phase in a Ga-doped Nd-rich Nd–Fe–B sintered magnet

  T.T. Sasaki;T. Ohkubo;Y. Takada;T. Sato

  239
  Citations

• Bimodally grained microstructure development during hot extrusion of Mg–2.4 Zn–0.1 Ag–0.1 Ca–0.16 Zr (at.%) alloys

  K. Oh-ishi;C.L. Mendis;T. Homma;S. Kamado

  238
  Citations

• Microstructure of fine-grained Nd–Fe–B sintered magnets with high coercivity

  H. Sepehri-Amin;Y. Une;T. Ohkubo;K. Hono

  238
  Citations

• The origin of coercivity decrease in fine grained Nd-Fe-B sintered magnets

  W.F. Li;T. Ohkubo;K. Hono;M. Sagawa

  236
  Citations

• The kinetics of nanocrystallization and microstructural observations in FINEMET, NANOPERM and HITPERM nanocomposite magnetic materials

  M.E. McHenry;F. Johnson;H. Okumura;T. Ohkubo

  224
  Citations

• TEM and 3DAP characterization of an age-hardened Mg–Ca–Zn alloy

  J.C. Oh;T. Ohkubo;T. Mukai;K. Hono

  220
  Citations