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Mechanical and Aerospace Engineering
Australia
2026

D-Index & Metrics

Mechanical and Aerospace Engineering

D-Index
74
Citations
23827
World Ranking
295
National Ranking
9

Materials Science

D-Index
74
Citations
23827
World Ranking
3570
National Ranking
118

David H. StJohn 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 David H. StJohn 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: 295 publications — 71st percentile

71% of scientists in this discipline score the same or lower.

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

David H. StJohn 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 David H. StJohn 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: 74 D-Index — 92nd percentile

92% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2026 - Research.com Mechanical and Aerospace Engineering in Australia Leader Award

Overview

David H. StJohn is affiliated with the University of Queensland in Australia and specializes in research within the fields of Engineering and Materials Science. Their work predominantly focuses on Mechanical Engineering and Aerospace Engineering, with further contributions to Materials Chemistry, Automotive Engineering, and Biomaterials.

The scientist's research topics include:

  • Aluminum Alloy Microstructure Properties
  • Additive Manufacturing Materials and Processes
  • Solidification and crystal growth phenomena
  • Aluminum Alloys Composites Properties
  • Additive Manufacturing and 3D Printing Technologies
  • High Entropy Alloys Studies
  • Magnesium Alloys: Properties and Applications

Frequent publication venues for their work include:

  • Acta Materialia
  • JOM
  • Journal of Alloys and Compounds
  • Metallurgical and Materials Transactions A
  • Scripta Materialia

David H. StJohn has collaborated extensively with several coauthors, including:

  • Matthew S. Dargusch
  • Mark Easton
  • Nagasivamuni Balasubramani
  • Gui Wang
  • Dong Qiu

Representative recent papers from their body of work are:

  • Grain structure control during metal 3D printing by high-intensity ultrasound, 2020, Nature Communications
  • Towards understanding grain nucleation under Additive Manufacturing solidification conditions, 2020, Acta Materialia
  • Grain Refinement of Alloys in Fusion-Based Additive Manufacturing Processes, 2020, Metallurgical and Materials Transactions A
  • Ultrauniform, strong, and ductile 3D-printed titanium alloy through bifunctional alloy design, 2024, Science
  • Revealing the Mechanisms of Grain Nucleation and Formation During Additive Manufacturing, 2020, JOM

Best Publications

  • The role of solute in grain refinement of magnesium

    Y. C. Lee;A. K. Dahle;D. H. StJohn

  • Additive manufacturing of ultrafine-grained high-strength titanium alloys

    Duyao Zhang;Dong Qiu;Mark A. Gibson;Mark A. Gibson;Yufeng Zheng;Yufeng Zheng

  • Grain refinement of magnesium alloys

    David H. StJohn;Ma Qian;Mark A. Easton;Peng Cao

  • Grain refinement of aluminum alloys: Part I. the nucleant and solute paradigms—a review of the literature

    Mark Easton;David StJohn

  • The electrochemical corrosion of pure magnesium in 1 N NaCl

    G. Song;G. Song;A. Atrens;D. Stjohn;J. Nairn

  • Grain structure control during metal 3D printing by high-intensity ultrasound.

    C. J. Todaro;M. A. Easton;D. Qiu;D. Zhang

  • The Interdependence Theory: The relationship between grain formation and nucleant selection

    DH Stjohn;M Qian;MA Easton;Peng Cao

  • Promoting the columnar to equiaxed transition and grain refinement of titanium alloys during additive manufacturing

    M.J. Bermingham;D.H. StJohn;J. Krynen;S. Tedman-Jones

  • Development of the as-cast microstructure in magnesium-aluminium alloys

    Arne K. Dahle;Young C. Lee;Mark D. Nave;Paul L. Schaffer

  • A model of grain refinement incorporating alloy constitution and potency of heterogeneous nucleant particles

    M.A Easton;D.H StJohn

  • Corrosion resistance of aged die cast magnesium alloy AZ91D

    Guangling Song;Amanda L Bowles;David H StJohn

  • Galvanic corrosion of magnesium alloy AZ91D in contact with an aluminium alloy, steel and zinc

    Guangling Song;Birgir Johannesson;Sarath Hapugoda;David StJohn

  • Grain refinement of aluminum alloys: Part II. Confirmation of, and a mechanism for, the solute paradigm

    Mark Easton;David StJohn

  • Controlling the microstructure and properties of wire arc additive manufactured Ti-6Al-4V with trace boron additions

    M J Bermingham;Damon Kent;Damon Kent;H Zhan;D H StJohn

  • An Analysis of the Relationship between Grain Size, Solute Content, and the Potency and Number Density of Nucleant Particles

    Mark Easton;David StJohn

  • Recent advances in grain refinement of light metals and alloys

    M.A. Easton;M. Qian;A. Prasad;D.H. StJohn

  • Potency of high-intensity ultrasonic treatment for grain refinement of magnesium alloys

    A. Ramirez;Ma Qian;B. Davis;T. Wilks

  • The effect of zirconium grain refinement on the corrosion behaviour of magnesium-rare earth alloy MEZ

    Guangling Song;David StJohn

  • Grain Refinement of Magnesium Alloys: A Review of Recent Research, Theoretical Developments, and Their Application

    D. H. StJohn;M. A. Easton;M. A. Easton;M. Qian;J. A. Taylor

  • Rheological behaviour of the mushy zone and its effect on the formation of casting defects during solidification

    A.K. Dahle;D.H. StJohn

  • An Hydrogen Evolution Method for the Estimation of the Corrosion Rate of Magnesium Alloys

    Guangling Song;Andrej Atrens;David StJohn

Frequent Co-Authors

Ma Qian
Ma Qian RMIT University
Mark Alan Easton
Mark Alan Easton RMIT University
Matthew S. Dargusch
Matthew S. Dargusch University of Queensland
Michael Bermingham
Michael Bermingham University of Queensland
Arne K. Dahle
Arne K. Dahle Jönköping University
Peng Cao
Peng Cao University of Auckland
Guang-Ling Song
Guang-Ling Song Xiamen University
Peter D. Lee
Peter D. Lee University College London
Dong Qiu
Dong Qiu RMIT University
Kazuhiro Nogita
Kazuhiro Nogita University of Queensland

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