| 13 | Influence of Fe on electronic density of defects in NiAl alloys显示文摘NiAl alloy is considered to be a good candidate material for high performance, high-tempera-ture structural applications since this material offers a wide range of attractive mechanical andphysical properties, such as low density (5. 86 g/cm^3), high melting point (1 640℃), goodthermal conductivity (4--8 times compared with Ni-based superalloys) and oxidation resis-tance. However, the use of NiAl is limited by its room-temperature brittleness. Georgeand Liu have investigated the effects of microalloying elements B, C and Be on the fractureproperties and grain boundaries of NiAl alloy. Their results showed that the improvement | Deng, W Xiong, LY Wang, SH Guo, JT Long, QW | 1997 | Chinese Science Bulletin1997，42，21： | 0 |
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