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Abstract
This work deals with the analysis and modelling of the microstructural evolution of the metastable titanium alloy Ti-5Al-5V-5Mo-3Cr during hot deformation up to moderate and large strains. Experimental flow curves and deformed samples are obtained by hot compression and hot torsion tests using a Gleeble ® 3800 device. The samples are deformed above and below the beta transus temperature and in a wide range of strain rates. Microstructures are characterized after deformation and in-situ water quenching using light optical and scanning electron microscopy and electron back scattered diffraction (EBSD). Dynamic recovery of the beta phase is found to be the main deformation mechanism up to moderated strains. By increasing the strain, continuous dynamic recrystallization (cDRX) is confirmed by the progressive conversion of low angle boundaries into high-angle boundaries. Alpha phase plays a secondary role in the deformation of the material by pinning the movement of beta high angle grain boundaries (HAGB). The evolution of the microstructure is modelled using dislocation density as internal variable in the single β field.
Originalsprache | englisch |
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Titel | THERMEC 2018 |
Redakteure/-innen | R. Shabadi, Tara Chandra, M. Jeandin, Mihail Ionescu, C. Richard |
Herausgeber (Verlag) | Trans Tech Publications Ltd. |
Seiten | 1443-1449 |
Seitenumfang | 7 |
ISBN (Print) | 9783035712087 |
DOIs | |
Publikationsstatus | Veröffentlicht - 1 Jan. 2018 |
Veranstaltung | 10th International Conference on Processing and Manufacturing of Advanced Materials: Thermec 2018 - Paris, Frankreich Dauer: 9 Juli 2018 → 13 Juli 2018 https://thermec2018.sciencesconf.org/ |
Publikationsreihe
Name | Materials Science Forum |
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Band | 941 MSF |
ISSN (Print) | 0255-5476 |
Konferenz
Konferenz | 10th International Conference on Processing and Manufacturing of Advanced Materials |
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Kurztitel | Thermec 2018 |
Land/Gebiet | Frankreich |
Ort | Paris |
Zeitraum | 9/07/18 → 13/07/18 |
Internetadresse |
ASJC Scopus subject areas
- Allgemeine Materialwissenschaften
- Physik der kondensierten Materie
- Werkstoffmechanik
- Maschinenbau
Fields of Expertise
- Advanced Materials Science
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