TiAl/B4C composite fabricated by high energy ball milling and hot press sintering processes and its mechanical properties
| Autor: | Jian Li, Liu Xiao, Weike Zhang, Baoju Yang, Yansheng Yin, Lizhen Gao, Yan Lei |
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| Rok vydání: | 2010 |
| Předmět: |
Materials science
Mechanical Engineering Composite number Metallurgy Alloy Sintering engineering.material Condensed Matter Physics Carbide chemistry.chemical_compound Fracture toughness chemistry Mechanics of Materials visual_art Boride visual_art.visual_art_medium engineering General Materials Science Ceramic Composite material Ball mill |
| Zdroj: | Materials Science and Engineering: A. 527:7436-7441 |
| ISSN: | 0921-5093 |
| Popis: | In situ homogeneous Ti–Al alloy and particulate reinforced B 4 C composite were obtained by fabricating Ti, Al, and B 4 C via high energy ball milling and subsequent hot press sintering. These technical processes promoted the solid reactions among B 4 C, Ti, and Al to produce composites comprising Ti–Al, TiC, TiB 2 , and B 4 C. When the starting materials were 10 wt.% TiAl/B 4 C and 20 wt.% wt.%TiAl/B 4 C, TiAl layers were intercalated into the ceramics substrate; further increasing in Ti and Al content (30 wt.% and 40 wt.%), the Ti–Al alloy was agglomerated and covering on the surfaces of the carbide and boride ceramics. The relative density increased while the hardness decreased with the enhancement of the total content of Ti and Al in the composite. The 20 wt.% TiAl/B 4 C composite exhibited both novel fracture toughness and the best bending strength. |
| Databáze: | OpenAIRE |
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