Enhancement of uniform elongation in high strength Ti-Mo based alloys by combination of deformation modes

X. H. Min, K. Tsuzaki, S. Emura, K. Tsuchiya

研究成果: ジャーナルへの寄稿学術誌査読

79 被引用数 (Scopus)

抄録

A combination of different deformation modes, namely, dislocation slip and {3. 3. 2}〈1. 1. 3〉 twinning was found to be effective for achieving high yield strength and large uniform elongation in the β type Ti-15Mo-5Zr and Ti-10Mo-2Fe alloys in the as-solution treated condition, where the Mo equivalency was designed to be between 15.3 and 18.7. mass%. The high yield strength was caused mainly by the slip, and the large uniform elongation was caused by the twinning through significant work hardening. The change in the work hardening rate with strain correlated well with the formation of mechanical twins. The deformation was heterogeneous among the grains and the twins were not seen in some of the grains even after the tensile fracture. This heterogeneity was discussed based on the effects of the grain orientation and the segregation of alloying elements.

本文言語英語
ページ(範囲)4569-4578
ページ数10
ジャーナルMaterials Science and Engineering A
528
13-14
DOI
出版ステータス出版済み - 5月 25 2011
外部発表はい

!!!All Science Journal Classification (ASJC) codes

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

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