World's Best Scientists 2026 revealed!

D-Index & Metrics

Mechanical and Aerospace Engineering

D-Index
44
Citations
8869
World Ranking
1594
National Ranking
32

Kei Ameyama publication distribution in Mechanical and Aerospace Engineering in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Mechanical and Aerospace Engineering in 2026. The highlighted bar marks where Kei Ameyama sits on this spectrum.

47–56 publications: 10 scientists 57–66 publications: 23 scientists 67–76 publications: 32 scientists 77–86 publications: 62 scientists 87–96 publications: 67 scientists 97–106 publications: 91 scientists 107–116 publications: 113 scientists 117–126 publications: 115 scientists 127–136 publications: 130 scientists 137–146 publications: 140 scientists 147–156 publications: 155 scientists 157–166 publications: 132 scientists 167–176 publications: 133 scientists 177–186 publications: 130 scientists 187–196 publications: 140 scientists 197–206 publications: 115 scientists 207–216 publications: 125 scientists 217–226 publications: 117 scientists 227–236 publications: 99 scientists 237–246 publications: 92 scientists 247–256 publications: 100 scientists 257–266 publications: 95 scientists 267–276 publications: 88 scientists 277–286 publications: 77 scientists 287–296 publications: 74 scientists 297–306 publications: 74 scientists 307–316 publications: 62 scientists 317–326 publications: 70 scientists 327–336 publications: 59 scientists 337–346 publications: 58 scientists 347–356 publications: 45 scientists 357–366 publications: 44 scientists 367–376 publications: 36 scientists 377–386 publications: 41 scientists 387–396 publications: 32 scientists 397–406 publications: 23 scientists 407–416 publications: 28 scientists 417–426 publications: 27 scientists 427–436 publications: 25 scientists 437–446 publications: 23 scientists 447–456 publications: 23 scientists 457–466 publications: 20 scientists 467–476 publications: 12 scientists 477–486 publications: 24 scientists 487–496 publications: 18 scientists 497–506 publications: 12 scientists 507–516 publications: 13 scientists 517–526 publications: 21 scientists 527–536 publications: 12 scientists 537–546 publications: 8 scientists 547–556 publications: 16 scientists 557–566 publications: 3 scientists 567–576 publications: 11 scientists 577–586 publications: 6 scientists 587–596 publications: 5 scientists 597–606 publications: 6 scientists 607–616 publications: 7 scientists 617–626 publications: 7 scientists 627–636 publications: 10 scientists 637–646 publications: 4 scientists 647–656 publications: 3 scientists 657–658 publications: 2 scientists 659+ publications: 100 scientists
47 publications 659+

This scientist: 338 publications — 79th percentile

79% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 659 publications or more.

Kei Ameyama D-index placement in Mechanical and Aerospace Engineering in 2026

The chart shows the D-index (discipline H-index) distribution of Mechanical and Aerospace Engineering scientists ranked by Research.com in 2026. The highlighted bar marks where Kei Ameyama sits on this spectrum.

30 D-Index: 83 scientists 31 D-Index: 113 scientists 32 D-Index: 144 scientists 33 D-Index: 153 scientists 34 D-Index: 189 scientists 35 D-Index: 158 scientists 36 D-Index: 139 scientists 37 D-Index: 127 scientists 38 D-Index: 130 scientists 39 D-Index: 126 scientists 40 D-Index: 104 scientists 41 D-Index: 100 scientists 42 D-Index: 107 scientists 43 D-Index: 101 scientists 44 D-Index: 103 scientists 45 D-Index: 79 scientists 46 D-Index: 88 scientists 47 D-Index: 70 scientists 48 D-Index: 83 scientists 49 D-Index: 44 scientists 50 D-Index: 64 scientists 51 D-Index: 56 scientists 52 D-Index: 50 scientists 53 D-Index: 48 scientists 54 D-Index: 58 scientists 55 D-Index: 52 scientists 56 D-Index: 48 scientists 57 D-Index: 42 scientists 58 D-Index: 34 scientists 59 D-Index: 42 scientists 60 D-Index: 37 scientists 61 D-Index: 42 scientists 62 D-Index: 44 scientists 63 D-Index: 22 scientists 64 D-Index: 33 scientists 65 D-Index: 29 scientists 66 D-Index: 23 scientists 67 D-Index: 29 scientists 68 D-Index: 24 scientists 69 D-Index: 19 scientists 70 D-Index: 34 scientists 71 D-Index: 26 scientists 72 D-Index: 19 scientists 73 D-Index: 18 scientists 74 D-Index: 19 scientists 75 D-Index: 14 scientists 76 D-Index: 19 scientists 77 D-Index: 8 scientists 78 D-Index: 18 scientists 79 D-Index: 16 scientists 80 D-Index: 12 scientists 81 D-Index: 17 scientists 82 D-Index: 11 scientists 83 D-Index: 16 scientists 84 D-Index: 7 scientists 85 D-Index: 9 scientists 86 D-Index: 8 scientists 87 D-Index: 6 scientists 88 D-Index: 6 scientists 89 D-Index: 7 scientists 90 D-Index: 10 scientists 91 D-Index: 4 scientists 92 D-Index: 4 scientists 93+ D-Index: 100 scientists
30 D-Index 93+

This scientist: 44 D-Index — 54th percentile

54% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 93 D-Index or more.

Overview

Kei Ameyama is affiliated with Ritsumeikan University in Japan and has contributed extensively to the fields of Engineering and Materials Science. Their research prominently focuses on Mechanical Engineering and Materials Chemistry, with significant work also in Mechanics of Materials and Aerospace Engineering. A smaller portion of their research involvement extends into Surgery.

The scientist's main topics of research include:

  • Microstructure and mechanical properties
  • Advanced materials and composites
  • Microstructure and Mechanical Properties of Steels
  • High Entropy Alloys Studies
  • Titanium Alloys Microstructure and Properties
  • Aluminum Alloys Composites Properties
  • Metal and Thin Film Mechanics

Kei Ameyama has published numerous papers, with notable recent works including:

  • "Heterostructured materials: superior properties from hetero-zone interaction" (2020) in Materials Research Letters
  • "Severe plastic deformation for producing superfunctional ultrafine-grained and heterostructured materials: An interdisciplinary review" (2024) in Journal of Alloys and Compounds
  • "Simultaneously enhanced strength and strain hardening capacity in FeMnCoCr high-entropy alloy via harmonic structure design" (2020) in Scripta Materialia
  • "Design and development of Ti-Zr-Hf-Nb-Ta-Mo high-entropy alloys for metallic biomaterials" (2021) in Materials & Design
  • "Enhanced corrosion resistance of CoCrFeMnNi high entropy alloy using heterogeneous structure design" (2022) in Corrosion Science

Their frequent coauthors include:

  • Hiroshi Fujiwara
  • Bhupendra Sharma
  • Mie Kawabata
  • G. Dirras
  • K. Mondal

Kei Ameyama often publishes in a range of journals, including:

  • Journal of the Japan Society of Powder and Powder Metallurgy
  • Journal of Alloys and Compounds
  • Metals
  • Materials Science Forum
  • Scripta Materialia

Best Publications

  • Heterostructured materials: superior properties from hetero-zone interaction

    Yuntian Zhu;Kei Ameyama;Peter M. Anderson;Irene J. Beyerlein

  • Low temperature superplasticity of AZ91 magnesium alloy with non-equilibrium grain boundaries

    M. Mabuchi;K. Ameyama;H. Iwasaki;K. Higashi

  • Additional hardening in harmonic structured materials by strain partitioning and back stress

    Hyung Keun Park;Kei Ameyama;Jongmyung Yoo;Hyunsang Hwang

  • Improvement of mechanical properties in SUS304L steel through the control of bimodal microstructure characteristics

    Zhe Zhang;Sanjay Kumar Vajpai;Dmitry Orlov;Kei Ameyama

  • Enhanced mechanical properties of Al5083 alloy with graphene nanoplates prepared by ball milling and hot extrusion

    Haiping Zhang;Cong Xu;Wenlong Xiao;Kei Ameyama

  • Harmonic-structured copper: performance and proof of fabrication concept based on severe plastic deformation of powders

    Choncharoen Sawangrat;Shota Kato;Dmitry Orlov;Dmitry Orlov;Kei Ameyama;Kei Ameyama

  • Design and fabrication of Ti-Zr-Hf-Cr-Mo and Ti-Zr-Hf-Co-Cr-Mo high-entropy alloys as metallic biomaterials.

    Takeshi Nagase;Yuuka Iijima;Aira Matsugaki;Kei Ameyama

  • In-situ observation of dislocation dynamics near heterostructured interfaces

    Hao Zhou;Hao Zhou;Chongxiang Huang;Xuechao Sha;Lirong Xiao

  • New Microstructure Design for Commercially Pure Titanium with Outstanding Mechanical Properties by Mechanical Milling and Hot Roll Sintering

    Tatsuya Sekiguchi;Keita Ono;Hiroshi Fujiwara;Kei Ameyama

  • The Development of High Performance Ti-6Al-4V Alloy via a Unique Microstructural Design with Bimodal Grain Size Distribution

    Sanjay Kumar Vajpai;Mie Ota;Tomoyuki Watanabe;Ryo Maeda

  • Three-dimensionally gradient harmonic structure design: an integrated approach for high performance structural materials

    Sanjay Kumar Vajpai;Mie Ota;Zhe Zhang;Kei Ameyama

  • Simultaneously enhanced strength and strain hardening capacity in FeMnCoCr high-entropy alloy via harmonic structure design

    Guodong Li;Guodong Li;Maowen Liu;Shaoyuan Lyu;Masashi Nakatani

  • Design and development of Ti–Zr–Hf–Nb–Ta–Mo high-entropy alloys for metallic biomaterials

    Yuuka Iijima;Takeshi Nagase;Aira Matsugaki;Pan Wang

  • Microstructure and mechanical properties of aluminum alloy matrix composites reinforced with Fe-based metallic glass particles

    Ruixiao Zheng;Han Yang;Tong Liu;Kei Ameyama

  • Microstructure and properties of beta Ti–Nb alloy prepared by powder metallurgy route using titanium hydride powder

    Bhupendra Sharma;Sanjay Kumar Vajpai;Kei Ameyama

  • Effect of high volume fraction of B4C particles on the microstructure and mechanical properties of aluminum alloy based composites

    Ruixiao Zheng;Xiaoning Hao;Yanbo Yuan;Zhiwei Wang

  • A study of grain boundary nucleated widmanstätten precipitates in a two-phase stainless steel

    K. Ameyama;G.C. Weatherly;K.T. Aust

  • Enhanced corrosion resistance of CoCrFeMnNi high entropy alloy using heterogeneous structure design

    Unknown

  • Harmonic structure, a promising microstructure design

    Unknown

  • Morphology and Crystallography of the Precipitation of Austenite at Ferrite Grain Boundaries in Two-Phase Stainless Steel

    Kei Ameyama;Tadashi Maki;Imao Tamura

  • Improving tensile strength and bend ductility of titanium/AlSI 304L stainless steel friction welds

    A. Fuji;T. H. North;K. Ameyama;M. Futamata

  • Obtaining copper with harmonic structure for the optimal balance of structure-performance relationship

    Dmitry Orlov;Hiroshi Fujiwara;Kei Ameyama

Frequent Co-Authors

Susumu Sugiyama
Susumu Sugiyama Ritsumeikan University
Yuntian Zhu
Yuntian Zhu City University of Hong Kong
Xu Chen
Xu Chen Tianjin University
Takayoshi Nakano
Takayoshi Nakano Osaka University
Zenji Horita
Zenji Horita Kyushu University
Kaveh Edalati
Kaveh Edalati Kyushu University
Tadashi Maki
Tadashi Maki Kyoto University
Xiaolei Wu
Xiaolei Wu Chinese Academy of Sciences
Hyoung Seop Kim
Hyoung Seop Kim Pohang University of Science and Technology
Mamoru Mabuchi
Mamoru Mabuchi Kyoto University

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