Development and characterization of a new near-alpha-titanium alloy for high performance applications

Daniela Proprentner

Research output: ThesisDiploma Thesis

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Abstract

Common near-alpha-titanium alloys are designed for high-temperature applications up to 600°C. These alloys combine excellent creep behavior with high specific strength at elevated temperatures. Therefore, these materials are used for applications in aerospace and automotive industry. Prior to this diploma thesis a new near-alpha-titanium alloy with an restricted intermetallic content of 50 vol.% was developed for application up to 800°C service temperature. The microstructure, with and without heat-treatments, was analyzed by means of light optical and scanning electron microscopy. Tensile tests were performed at room and elevated temperatures to quantify the increase of strength after different heat-treatments. The annealed microstructure was described by means of quantitative phase analysis of light optical images, x-ray diffraction, electron back scattering diffraction and additional transmission electron microscopy. The deformation behavior of the material has been determined by a deformation dilatometer with additional characterization of the deformed microstructure. Furthermore, static high temperature oxidation test in air atmosphere were performed and compared with different titanium alloys.
Translated title of the contributionEntwicklung und Charakterisierung einer neuen near-alpha-Titanlegierung zum Einsatz im Hochleistungsbereich
Original languageEnglish
QualificationDipl.-Ing.
Supervisors/Advisors
  • Clemens, Helmut, Supervisor (internal)
  • Chladil, Harald, Co-Supervisor (internal)
  • Joos, Rainer, Co-Supervisor (external), External person
Award date29 Jun 2007
Publication statusPublished - 2007

Bibliographical note

embargoed until null

Keywords

  • titanium alloys near-alpha titanium alloys microstructure deformation behavior high temperature strength oxidation behavior

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