Microstructure and creep behavior of directionally solidified TiAl-base alloys
| Autor: | T Yamanaka, S Muto, Ho-Nyun Lee, Haruyuki Inui, Masaharu Yamaguchi, David R. Johnson |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
chemistry.chemical_classification
Materials science Base (chemistry) Mechanical Engineering crystal growth Metallurgy Metals and Alloys Crystal growth General Chemistry titanium aluminides based on TiAl Microstructure creep (properties and mechanisms mechanical properties at high temperatures chemistry Creep Mechanics of Materials Ultimate tensile strength Materials Chemistry Lamellar structure |
| Zdroj: | Intermetallics. 9:923-927 |
| ISSN: | 0966-9795 |
| Popis: | Tensile creep tests were conducted on directionally solidified TiAl alloys to discern the effect of alloying and lamellar orientation. A seeding technique was used to align the TiAl/Ti3Al lamellar structure parallel to the growth direction for alloys of Ti–47Al, Ti–46Al–0.5Si–0.5X (X=Re, W, Mo, and Cr), and Ti–46Al–1.5Mo–0.2C (at.%). Tensile creep tests were performed at 750 °C using applied stresses of 210 and 240 MPa. Aligning the lamellar microstructure greatly enhances the creep resistance which can further be improved by additional alloying. |
| Databáze: | OpenAIRE |
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