A microstructure and sonic fatigue investigation of Ti-TiB functionally graded materials

J. P. Quast, C. J. Boehlert, R. Gardner, E. Tuegel, T. Wyen

Research output: Contribution to journalArticle

  • 10 Citations

Abstract

The microstructure and high-cycle sonic fatigue behavior of 3- and 25-mm-thick titanium-titanium boride (Ti-TiB) functionally graded plates were evaluated. The TiB content had a significant effect on the microstructure. A needle-like TiB phase existed at low TiB phase volume percentages (<33.8%), while higher volume percentages resulted in TiB-phase clustering. For larger layer thicknesses, the transition or interface region between the layers was more evident. Fracture surface images of the fatigue specimens indicated that high TiB content regions exhibited brittle fracture characteristics while the Ti-rich layers exhibited ductile failure characteristics. A Ti-85%TiB alloy was also investigated and this material exhibited TiB clustering and sporadic fatigue lives as well as brittle fracture characteristics.

LanguageEnglish (US)
Pages1-9
Number of pages9
JournalMaterials Science and Engineering A
Volume497
Issue number1-2
DOIs
StatePublished - Dec 15 2008

Profile

acoustic fatigue
titanium borides
Functionally graded materials
Borides
Titanium
titanium
Brittle fracture
Fatigue of materials
microstructure
Microstructure
fatigue life
needles
Needles
cycles
titanium boride

Keywords

  • Boron
  • Fatigue
  • Functionally graded material
  • Microstructure
  • Titanium

ASJC Scopus subject areas

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

Cite this

A microstructure and sonic fatigue investigation of Ti-TiB functionally graded materials. / Quast, J. P.; Boehlert, C. J.; Gardner, R.; Tuegel, E.; Wyen, T.

In: Materials Science and Engineering A, Vol. 497, No. 1-2, 15.12.2008, p. 1-9.

Research output: Contribution to journalArticle

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