Effect of indentation orientation on the onset of plastic deformation for a MAX phase Ti2AlC

Yusuke Wada, Nobuaki Sekido, Takahito Ohmura, Kyosuke Yoshimi

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Polycrystalline Ti2AlC alloys were prepared by spark plasma sintering of high purity elemental materials, and subsequently annealed at_ 1500℃ for 24 h. Nanoindentation behavior was studied on the grains with their surface normal directions parallel to 〈3362〉,〈4481〉,〈0001〉and〈1120〉. During loading of nanoindentation, popin events were found to occur for all the indentation directions. The critical loads of the first popin observed for the indentation directions parallel to〈1120〉and〈0001〉were higher than those for〈3362〉and〈4481〉. Surface topography around the residual indents suggests that the basal slip dominates the plastic deformation upon indentation. These results suggest that the nucleation of the basal dislocation is a major barrier for the onset of plastic deformation underneath the indenter.

本文言語English
ページ(範囲)162-168
ページ数7
ジャーナルNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
82
5
DOI
出版ステータスPublished - 2018

ASJC Scopus subject areas

  • 凝縮系物理学
  • 材料力学
  • 金属および合金
  • 材料化学

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