In situ synthesized TiC/Mo-based composites via laser powder bed fusion

Weiwei Zhou, Xiaohao Sun, Keiko Kikuchi, Naoyuki Nomura, Kyosuke Yoshimi, Akira Kawasaki

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

A strategy utilizing carbon nanotubes (CNTs) was put forward to synthesize in situ TiC/Mo-based composites via laser powder bed fusion (laser PBF). The functionalized CNTs were dispersed with MoTiAl powders under electrostatic attraction by heteroagglomeration. During laser PBF, individual CNTs reacted with Ti elements and were completely transformed into monocrystalline TiC. Those TiC reinforcements were homogeneously dispersed and intimately contacted the matrix, giving rise to the morphological evolution of a MoTiAl matrix from the nearly columnar to fine equiaxed grains as well as improved mechanical performance. Our finding offers significant guidance for designing and producing advanced Mo-based composites in the application of heat-resistant materials.

Original languageEnglish
Pages (from-to)116-124
Number of pages9
JournalMaterials and Design
Volume146
DOIs
Publication statusPublished - 2018 May 15

Keywords

  • Carbon nanotubes
  • Laser powder bed fusion (laser PBF)
  • Metal matrix composites (MMCs)
  • Microstructure
  • Molybdenum

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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