Beta ti alloys with low young's modulus

Tomomichi Ozaki, Hiroaki Matsumoto, Sadao Watanabe, Shuji Hanada

Research output: Contribution to journalArticlepeer-review

208 Citations (Scopus)

Abstract

Composition dependence of Young's modulus in β Ti-V and Ti-Nb binary alloys and Sn-added ternary alloys quenched from β phase region was investigated at room temperature in relation to the stability of β phase. A minimum of Young's modulus in the binary alloys appears at such a composition that athermal ω phase transformation is almost completely suppressed. Formation of isothermal ω phase by aging after quenching increases Young's modulus. Sn addition to the binary alloys suppresses or retards ω transformation, thereby decreasing Young's modulus. Optimization of alloy composition in Ti-Nb-Sn alloys leads to low Young's modulus of about 40 GPa. The composition dependence of Young's modulus obtained experimentally in this study can be qualitatively explained by the theoretical discrete-variational Xα cluster method.

Original languageEnglish
Pages (from-to)2776-2779
Number of pages4
JournalMaterials Transactions
Volume45
Issue number8
DOIs
Publication statusPublished - 2004 Aug

Keywords

  • Beta titanium alloy
  • Omega phase
  • Tin addition
  • Titanium-niobium alloy
  • Titanium-vanadium alloy
  • Young's modulus

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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