Thermomechanical characterization of β-stabilized Ti-45Al-7Nb-0.4W-0. 15B alloy

B. Liu, Y. Liu, Y. P. Li, W. Zhang, A. Chiba

研究成果: Article査読

81 被引用数 (Scopus)

抄録

The correlation between hot deformation parameters and the workability of β-stabilized Ti-45Al-7Nb-0.4W-0.15B (at. %) alloy was studied in the temperature range 1000-1200 °C and the strain rate range 0.001-1 s -1. Deformation mechanisms were characterized by detailed analyses of the deformation behavior and microstructural observations. The results indicate that the deformation and recrystallization occurred preferentially in the grain boundary β phases because its good high temperature deformability enhances grain boundary sliding and migration, and thus improves the workability. Decomposition of the β phase to α2 and γ phases partly accommodates the stress concentration and is thus beneficial in hot deformation. Appropriate deformation processing parameters were suggested based on the processing map, and were successfully applied in the quasi-isothermal canned forging of industrial-scale billets.

本文言語English
ページ(範囲)1184-1190
ページ数7
ジャーナルIntermetallics
19
8
DOI
出版ステータスPublished - 2011 8月

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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