Hot Deformation and Microstructural Evolution in an α2/O Titanium Aluminide Alloy Ti-25Al-15Nb
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P.K. Sagar
Abstract
Deformation processing and microstructural development of an α2/O aluminide alloy Ti-25Al-15Nb (at.%) was studied in the temperature range of 950 to 1200 °C and strain rate range of 10–3 to 100 s–1. Regions of processing and instability were identified using dynamic materials model. Dynamic recrystallization (DRX) of α2/O phase and β phase were seen to occur in the region of 950 to 1050°C/0.001 to 0.05 s–1 and 1125 to 1175 °C/0.001 to 0.1 s–1, respectively. Unstable flow was seen to occur in the region of 1050 to 1190°C/10 to 100 s–1. Thermal activation analysis showed that DRX of α2/O and β was controlled by cross-slip.
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© 1998 Carl Hanser Verlag, München
Articles in the same Issue
- Frontmatter
- Aufsätze
- Study of the Transitions AuCu I → AuCu II → Disorder by Differential Scanning Calorimetry
- Critical Data and Vapor Pressures for Aluminium and Copper
- Study of Al1–xTixB2 Particles Extracted from Al–Ti–B Alloys
- Experimental Investigation and Thermodynamic Modeling of the Ni–Ti–C System
- Erratum
- Determination of the Nitrogen Diffusion Coefficient in Steels with Non-isothermal Experiments
- Microstructures and Hot Tensile Properties of Pressure-diecast and Gravity-cast Commercial Zinc-based Alloys
- Development of Annealing Textures in Al–Mg Alloys
- Hot Deformation and Microstructural Evolution in an α2/O Titanium Aluminide Alloy Ti-25Al-15Nb
- Microhardness of Structure Units in the Ternary Ti-rich Ti–Si–Al Alloys
- Metallurgical Factors Affecting Impact Toughness of Eutectic Al-Si Casting Alloy
- Mitteilungen der Deutschen Gesellschaft für Materialkunde e.V.
- Personen
- Buchbesprechungen
Articles in the same Issue
- Frontmatter
- Aufsätze
- Study of the Transitions AuCu I → AuCu II → Disorder by Differential Scanning Calorimetry
- Critical Data and Vapor Pressures for Aluminium and Copper
- Study of Al1–xTixB2 Particles Extracted from Al–Ti–B Alloys
- Experimental Investigation and Thermodynamic Modeling of the Ni–Ti–C System
- Erratum
- Determination of the Nitrogen Diffusion Coefficient in Steels with Non-isothermal Experiments
- Microstructures and Hot Tensile Properties of Pressure-diecast and Gravity-cast Commercial Zinc-based Alloys
- Development of Annealing Textures in Al–Mg Alloys
- Hot Deformation and Microstructural Evolution in an α2/O Titanium Aluminide Alloy Ti-25Al-15Nb
- Microhardness of Structure Units in the Ternary Ti-rich Ti–Si–Al Alloys
- Metallurgical Factors Affecting Impact Toughness of Eutectic Al-Si Casting Alloy
- Mitteilungen der Deutschen Gesellschaft für Materialkunde e.V.
- Personen
- Buchbesprechungen
