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 contribution | Entwicklung und Charakterisierung einer neuen near-alpha-Titanlegierung zum Einsatz im Hochleistungsbereich |
|---|---|
| Original language | English |
| Qualification | Dipl.-Ing. |
| Supervisors/Advisors |
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| Award date | 29 Jun 2007 |
| Publication status | Published - 2007 |
Bibliographical note
no embargoKeywords
- titanium alloys
- near-alpha titanium alloys
- microstructure
- deformation behavior
- high temperature strength
- oxidation behavior