期刊
INTERMETALLICS
卷 43, 期 -, 页码 8-15出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.intermet.2013.07.004
关键词
Titanium aluminides; based on TiAl; Phase transformation; Reaction synthesis; Microstructure; Aero-engine components
资金
- National Natural Science Foundation of China [51071058]
Fully dense microlaminated composite sheets consisting of alternating TiAl and carbide-layers have been successfully in-situ synthesized by hot pressing of multi-layered Ti-(SiCp/Al) sheets and subsequent multi-step reactive annealing. The phase transitions and reaction mechanisms at various annealing stages were investigated. Compared with monolithic TiAl, the introduction of carbide-layers and in-situ formed Ti5Si3 may significantly refine the lamellar microstructure of TiAl and thus the unique microlaminated TiAl matrix composite sheet is expected to be applied in the turbine blades and jet engines widely. (c) 2013 Elsevier Ltd. All rights reserved.
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