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https://hdl.handle.net/10316/4203
Título: | On the formation of intermetallic matrix composites produced by mechanical alloying and sputtering | Autor: | Neves, F. Duarte, N. Trindade, B. |
Palavras-chave: | Ti-Al intermetallics; Mechanical alloying; Vapor deposition; Powder metallurgy; Mechanical properties | Data: | 2007 | Citação: | Journal of Alloys and Compounds. 434-435:(2007) 378-382 | Resumo: | (Ti-48Al)-based intermetallics were synthesized by a combination of mechanical alloying, sputtering and hot isostatic pressure techniques. Blended elemental powders of TiH2 and Al with nominal composition TiH2-48Al were mechanically alloyed for different periods of time. The powders were then coated with Ti and Ag and subsequently hot isostatically pressed at 900 °C with a maximum pressure of 150 MPa for 2 h. Finally they were heat treated at 1200 °C for 4 h. After processing, the compacts obtained from the TiH2-48Al coated powders had a lower hardness but a higher Young's modulus and fracture-toughness than the uncoated compacts. Therefore, the combined used of mechanical alloying, sputtering and compaction techniques might be an alternative method for the synthesis of compacts with non-conventional microstructures, formed by surface modified intermetallic particles. | URI: | https://hdl.handle.net/10316/4203 | DOI: | 10.1016/j.jallcom.2006.08.281 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Eng.Mecânica - Artigos em Revistas Internacionais |
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Ficheiro | Descrição | Tamanho | Formato | |
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filea6fefb4585884da9b5e5b878f30bbc2a.pdf | 953.42 kB | Adobe PDF | Ver/Abrir |
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