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Effect of lamellar spacing on microstructural instability and creep behavior of a lamellar TiAl alloy |
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| Authors: | Hanliang Zhu DY Seo K Maruyama P Au |
| Affiliation: | aGraduate School of Environmental Studies, Tohoku University, 02 Aoba-yama, Aoba-ku, Sendai, Miyagi 980-8579, Japan bStructures and Materials Performance Laboratory, Institute for Aerospace Research, National Research Council Canada, Ottawa, Ontario K1A 0R6, Canada |
| Abstract: | Finer lamellar spacing in the lamellar structure of a Ti–45Al–2Nb–2Mn + 0.8 vol.%TiB2 (45XD) alloy does improve the primary creep resistance. However, the unstable nature of the fine plate contributes largely to the degradation of the lamellar structure and a rapid increase in the tertiary creep rate, indicating that a fine lamellar structure has a detrimental effect on the long-term creep. |
| Keywords: | TiAl alloy Lamellar spacing Microstructural instability Creep |
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