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Bruch- und Ermüdungseigenschaften der hochfesten beta-Titanlegierung Ti-5553 bei sehr hohen Festigkeiten
Citation Link: https://doi.org/10.15480/882.1010
Other Titles
Fracture- and fatigue properties of the high-strength beta-titaniumalloy Ti-5553 at very high strength
Publikationstyp
Doctoral Thesis
Date Issued
2010
Sprache
German
Author(s)
Advisor
Title Granting Institution
Technische Universität Hamburg
Place of Title Granting Institution
Hamburg
Examination Date
2011-01-03
TORE-DOI
beta-annealed conditions with small and big grainsizes and bi-modal conditions with a small grainsize were made of the metastable beta-titanium alloy Ti-5Al-5V-5Mo-3Cr, each with three or more strengthlevels. Mechanical properties (like sigma(0.2), A_5, sigma(HCF) and K(IC)), microstructures and fractured surfaces of conditions with yield strength up to 1900 MPa were compared. Grainsize and fracture properties could be affected by a variation of deformation and annealing temperatures. Independently from that, volume and size of alpha-titanium-precipitates are defined by aging, which sets the strength. The relations between mechanical properties are changing at strengthlevels above 1350 - 1400 MPa, caused by a great influence of the difference in strength between grain and precipitation-free-zone.
Subjects
high-strength
titan, titaniumalloy
fracturetoughness
fatigue strength
DDC Class
600:Technology (Applied sciences)
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rodenberg_thesis.pdf
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