Effect of Heat Treatments on Phase Transformation and Tensile Properties in Cast Ti-47Al-2Cr-2Nb Alloy
Abstract: Microstructural refinement by two steps heat treatment in Ti-47Al-2Cr-2Nb at.% alloy, with samples' dimension of ⌀ 15 mm × 80 mm, is studied in this paper. A coarse fully lamellar microstructure can be refined to a near gamma (NG) one with a grain size of ∼ 180 μm by one step heat treatment of 1150°C for 12 h. The instability of initial structure plays an important role in the transformation. Some samples are subsequently treated at 1280°C for 2 h, the NG structure is further converted to a new lamellar structure through α laths precipitated with different directions within each γ grain and room temperature tensile elongation of the alloy is reached to a value of 1.28% after two steps heat treatments.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Effect of Heat Treatments on Phase Transformation and Tensile Properties in Cast Ti-47Al-2Cr-2Nb Alloy ; volume:31 ; number:3 ; year:2012 ; pages:281-287
High temperature materials and processes ; 31, Heft 3 (2012), 281-287
- Creator
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Su, Meike
Zheng, Lijing
Yan, Jie
Zhang, Hu
- DOI
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10.1515/htmp-2011-0141
- URN
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urn:nbn:de:101:1-2501270415312.388846668302
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:25 AM CEST
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Associated
- Su, Meike
- Zheng, Lijing
- Yan, Jie
- Zhang, Hu
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