Mechanical properties and microstructures of dental cast Ti-6Nb-4Cu, Ti-18Nb-2Cu, and Ti-24Nb-1Cu alloys

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Abstract

The mechanical properties —tensile strength, yield strength, elongation after fracture, and Vickers hardness— and alloy phases of the dental cast alloys Ti-6%Nb-4%Cu, Ti-18%Nb-2%Cu, and Ti-24%Nb-1%Cu were investigated. Ti-6%Nb-4%Cu consisted of a single α-phase, while Ti-18%Nb-2%Cu and Ti-24%Nb-1%Cu consisted of α-and β-phases. The tensile strengths, yield strengths, and hardnesses of these alloys were higher than those of Ti-5%Cu and Ti-30%Nb; however, their breaking elongations were smaller. These differences in the mechanical properties are attributable to solid-solution strengthening or to precipitation strengthening by the dual-phase (α+β) structure. Thus, Ti-Nb-Cu alloys are suitable for use in high-strength dental prostheses, such as implantretained superstructures and narrow-diameter implants.

Original languageEnglish
Pages (from-to)564-570
Number of pages7
JournalDental materials journal
Volume35
Issue number4
DOIs
Publication statusPublished - 2016

Keywords

  • Dental implant
  • Mechanical property
  • Microstructure
  • Ti-Nb-Cu alloy
  • Titanium alloy

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

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