Rapid oxynitriding of Ti6Al4V alloy by induction heating in air+1

Kazuki Tamura, Shogo Takesue, Tatsuro Morita, Elia Marin, Jun Komotori, Yoshitaka Misaka, Masao Kumagai

研究成果: Article査読

2 被引用数 (Scopus)

抄録

In this study, a rapid oxynitriding technique based on induction-heating was developed for the titanium alloy Ti6Al4V, and its effects on surface characteristics of the alloy were investigated. The surface microstructures of the alloy were characterized by employing a scanning electron microscope, electron back-scatter diffraction, X-ray diffraction and nano-indentation tests. Induction-heating in air for 60 s caused the formation of a hardened layer on the Ti6Al4V alloy surface, which can be attributed to the diffusion of oxygen and nitrogen atoms. When water quenching was performed after heating, transformation to an acicular martensitic ¡A phase occurred, resulting in increased in substrate hardness. However, cracks were initiated at the surface of the oxynitrided alloy. The cracks were eliminated through fine particle bombarding treatment, whereas the hardened layer formed by the oxynitriding treatment remained. The obtained results thus indicate that the oxynitriding technique developed in this study can enhance the wear resistance and tensile strength of the Ti6Al4V alloy within a short period of time.

本文言語English
ページ(範囲)111-117
ページ数7
ジャーナルMaterials Transactions
62
1
DOI
出版ステータスPublished - 2021 1月 1

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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