Investigation of the structure and properties of hypereutectic Ti-based bulk alloys

Dmitri Valentinovich Louzguine, Larissa V. Louzguina-Luzgina, Akihisa Inoue

研究成果: Conference article査読

抄録

Structure and mechanical properties of binary Ti-TM (TM-other transition metals) and ternary Ti-Fe-(TM, B or Si) alloys produced in the shape of the arc-melted ingots of about 25 mm diameter and 10 mm height are studied. The formation of high-strength and ductile hypereutectic alloys was achieved in the Ti-Fe, Ti-Fe-Cu and Ti-Fe-B systems. The structures of the high-strength and ductile hypereutectic alloys studied by X-ray diffractometry and scanning electron microscopy were found to consist of the primary cubic Pm3̄m intermetallic compound (TiFe-phase or a solid solution on its base) and a dispersed eutectic consisting of this Pm3̄m intermetallic compound + BCC Im3̄m β-Ti supersaturated solid solution phase. The hypereutectic Ti-Fe alloy showed excellent compressive mechanical properties. The addition of Cu improves its ductility. B addition increased mechanical strength. Ni, Cr and Mn additions caused embrittlement owing to the formation of alternative intermetallic compounds. The deformation behaviour and the fractography of the Ti-based alloys were studied in details. The reasons for the high strength and good ductility of the hypereutectic alloys are discussed.

本文言語English
論文番号S4.3
ページ(範囲)133-138
ページ数6
ジャーナルMaterials Research Society Symposium Proceedings
842
出版ステータスPublished - 2005 8 26
イベント2004 MRS Fall Meeting - Boston, MA, United States
継続期間: 2004 11 292004 12 2

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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