Microstructure and oxidation behaviors of near-α Ti-6.5Al-4Sn-4Zr-0. 5Mo-based alloys with Ir addition

W. L. Xiao, H. Murakami, D. H. Ping, Y. Yamabe-Mitarai

研究成果: Article査読

6 被引用数 (Scopus)

抄録

The microstructure and oxidation behaviors of near α-Ti-based alloys with small amount of iridium (Ir) additions were investigated. The microstructure of both Ir-free and Ir-containing alloys was observed to consist of α + β Widmanstätten colonies. The β lamellae gradually became continuous with increasing Ir additions since Ir acted as a β-stabilizer in the alloys. Isothermal oxidation test indicated that Ir addition reduced the oxidation resistance at 650 C; while at 750 C, the adherence of thermally grown oxides was enhanced, and a thin Al 2O3-enriched layer on the oxide scale was promoted in the Ir-containing alloy, which suggests that Ir addition was effective in improving oxidation resistance of near-α-based alloys at 750 C.

本文言語English
ページ(範囲)3363-3369
ページ数7
ジャーナルJournal of Materials Science
48
9
DOI
出版ステータスPublished - 2013 5 1
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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