Effects of Ga, Sn Addition and Microstructure on Oxidation Behavior of Near-α Ti Alloy

Y. Yang, T. Kitashima, T. Hara, Y. Hara, Y. Yamabe-Mitarai, M. Hagiwara, S. Iwasaki

研究成果: Article査読

4 被引用数 (Scopus)

抄録

We investigated the effects of adding Ga or Sn, with almost the same Al equivalent, on the oxidation behaviors of near-α Ti alloy with the bimodal structure and lamellar structure. The replacement of Sn with Ga decreased the alloy weight gain during oxidation, suppressed oxide growth, and improved adherence between the oxide and substrate. A lamellar alloy structure showed a lower weight gain during oxidation compared to the bimodal structure. Unlike conventional near-α alloys, recrystallization occurred near the oxide/substrate interface in Ga-modified alloy, which may contribute to the release of stress, improvement of the adherence between the oxide and substrate, and prevention of oxide-scale spallation from the Ga-modified alloy. A possible mechanism for the recrystallization in the Ga-modified alloy was also discussed.

本文言語English
ページ(範囲)583-598
ページ数16
ジャーナルOxidation of Metals
88
5-6
DOI
出版ステータスPublished - 2017 12 1

ASJC Scopus subject areas

  • 無機化学
  • 金属および合金
  • 材料化学

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