Wear and friction coefficient of particle reinforced Ti-alloys

Maria Cecilia Poletti*, A. Merstallinger, Th Schubert, W. Marketz, H. P. Degischer

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Particulate Reinforced Titanium matrix composites (PRTi) exhibit some improved specific mechanical properties in comparison with those of unreinforced titanium alloys as a result of the combination of the high strength and stiffness of ceramic particles with the toughness and damage tolerance provided by the metal matrix. The poor tribological properties of the titanium exclude titanium alloys from applications where wear resistance is required (brakes, rotating parts, sliding parts). The addition of ceramic particles improves the tribological properties of metals sensitive to adhesive and /or abrasive wear significantly. In this work, the wear resistance and the friction coefficient of Ti6Al-6V-2Sn reinforced with TiC particles and Ti6Al-4V reinforced with SiC particles (prototype material) are compared with the unreinforced alloys. Pin on disc and pin on ring tests were carried out against standard steel (100Cr6) as a function of pressure, speed and temperature. The results show generally a higher friction coefficient and wear resistance for the PRTi than for the unreinforced alloys. The microstructures of the pins, discs and rings were analysed using light optical microscopy and scanning electron microscopy including EDX micro-analysis in order to conclude on the dominating wear mechanism.

Original languageEnglish
Pages (from-to)741-749
Number of pages9
JournalMaterialwissenschaft und Werkstofftechnik
Volume35
Issue number10-11
DOIs
Publication statusPublished - Oct 2004
Externally publishedYes

Keywords

  • Metal/matrix composite
  • Powder metallurgy
  • SiC
  • Ti alloy
  • TiC
  • Wear resistance

ASJC Scopus subject areas

  • Materials Science(all)
  • Biotechnology
  • Biochemistry

Fingerprint Dive into the research topics of 'Wear and friction coefficient of particle reinforced Ti-alloys'. Together they form a unique fingerprint.

Cite this