Effects of TiFe Intermetallic Compounds on the Tensile Behavior of Ti-4Al-4Fe-0.25Si Alloy
| Autor: | Chan Hee Park, Jea Keun Hong, Sang Won Lee, Kyong Min Kim, Jong-Taek Yeom, Donald S. Shih |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Structural material Alloy Metallurgy Metals and Alloys Nucleation Intermetallic 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Brittleness Tensile behavior Mechanics of Materials 0103 physical sciences engineering 0210 nano-technology Ductility |
| Zdroj: | Metallurgical and Materials Transactions A. 48:561-567 |
| ISSN: | 1543-1940 1073-5623 |
| Popis: | The effect of the B2 (ordered BCC) intermetallic compound TiFe on the tensile behavior of the Ti-4Al-4Fe-0.25Si alloy was investigated. The nucleation mechanism of TiFe was dependent on the solution temperature, and the solution treatment and aging temperatures were also important to the final alloy. The presence of intra-granular TiFe, which nucleated at α′ (HCP) sites during aging, resulted in alloy brittleness. Alternatively, the presence of inter-granular TiFe, which nucleated only at nano-sized α (HCP) sites during aging, resulted in an excellent combination of strength and ductility compared to the original microstructure. |
| Databáze: | OpenAIRE |
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