Modelling dilatometry data of isothermal ω-phase formation in a strongly β-stabilised TiV-alloy
| Autor: | Enzinger, Robert Josef, Luckabauer, Martin, Ichitsubo, Tetsu, Würschum, Roland, Ionescu, Mihail, Sommitsch, Christof, Poletti, Cecilia, Kozeschnik, Ernst, Chandra, Tara |
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| Přispěvatelé: | Production Technology |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Titanium-vanadium alloy Alloy Vanadium chemistry.chemical_element Thermodynamics 02 engineering and technology engineering.material 01 natural sciences Isothermal process Microscopic scale Spinodale decomposition Lattice constant Metastability Phase (matter) 0103 physical sciences General Materials Science 010302 applied physics Mechanical Engineering 021001 nanoscience & nanotechnology Condensed Matter Physics Isothermal ω-phase formation chemistry Mechanics of Materials β-stabilised titanium alloy engineering Dilatometry 0210 nano-technology Material properties |
| Zdroj: | THERMEC 2021-International Conference on Processing and Manufacturing of Advanced Materials Processing, Fabrication, Properties, Applications, 1851-1856 STARTPAGE=1851;ENDPAGE=1856;TITLE=THERMEC 2021-International Conference on Processing and Manufacturing of Advanced Materials Processing, Fabrication, Properties, Applications |
| ISSN: | 0255-5476 1851-1856 |
| Popis: | In the most relevant technical β-titanium alloys, the extensive formation of the metastable ω-phase during common heat treatments has been a long-standing problem due to the deteriorating effect of this phase on the material properties. By means of dilatometry, the formation of the isothermal ω-phase has been investigated during ageing a Ti-21at.-%V-sample at 300 °C. A model has been developed, which allows to quantitatively correlate the maximum length changes appearing upon ageing to changes occurring at the microscopic scale, i.e. variations of the lattice constants, phase fractions and concentrations of vanadium in the phases appearing. The length change predicted by the model is in very good accordance with the data measured paving the way for further kinetic discussion and ultimately for deriving kinetic parameters. |
| Databáze: | OpenAIRE |
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