Filtern
Erscheinungsjahr
Dokumenttyp
- Zeitschriftenartikel (51)
- Beitrag zu einem Tagungsband (49)
- Vortrag (43)
- Forschungsdatensatz (17)
- Beitrag zu einem Sammelband (9)
- Forschungsbericht (6)
- Buchkapitel (5)
- Monografie (3)
- Posterpräsentation (3)
Sprache
- Englisch (114)
- Deutsch (68)
- Mehrsprachig (3)
- Portugiesisch (1)
Schlagworte
- Microstructure (16)
- Creep (14)
- Ontology (11)
- TMF (10)
- Aging (9)
- Coarsening (9)
- Fatigue (8)
- LCF (8)
- Transmission electron microscopy (7)
- Additive manufacturing (6)
Organisationseinheit der BAM
- 5 Werkstofftechnik (94)
- 5.2 Metallische Hochtemperaturwerkstoffe (93)
- 5.5 Materialmodellierung (14)
- 9 Komponentensicherheit (13)
- 8 Zerstörungsfreie Prüfung (11)
- 5.1 Mikrostruktur Design und Degradation (10)
- 8.5 Röntgenbildgebung (7)
- 9.6 Additive Fertigung metallischer Komponenten (7)
- 9.4 Integrität von Schweißverbindungen (5)
- 8.0 Abteilungsleitung und andere (3)
Eingeladener Vortrag
- nein (43)
Kriechen von kurzfaserverstärkten Aluminium-Legierungen unter einachsiger und zweiachsiger Belastung
(2005)
A material family to replace the current superalloys in aeronautical gas turbine engines is
considered to be that of gamma Titanium Aluminide (γ-TiAl) alloys. Structural components in
aeronautical gas turbine engines typically experience large variations in temperatures and multiaxial
states of stress under non-isothermal conditions. The uniaxial, torsional and bi-axial thermomechanical
fatigue (TMF) behaviour of this γ-TiAl alloy have been examined at 400 800°C with
strain amplitudes from 0.15% to 0.7%. The tests were conducted at both in-phase (IP) and out-ofphase
(OP). The effects of TMF on the microstructure were also investigated. For the same
equivalent mechanical strain amplitude uniaxial IP tests showed significantly longer lifetimes than
pure torsional TMF tests. The non-proportional multiaxial OP test showed the lowest lifetimes at
the same equivalent mechanical strain amplitude compared to the other types of tests.
A titanium (Ti-6242) matrix composite reinforced with continuous SiC fibers was studied. The mechanical behavior of the matrix and the composite was characterized by tensile, creep and isothermal fatigue tests at room temperature and up to 550°C. The thermo-mechanical fatigue behavior under in-phase and out-of-phase conditions was investigated for the composite between 100 and 550°C. Fracture surfaces were characterized by confocal light microscopy and by scanning electron microscopy to identify the damage mechanisms.