Theoretical predictions of structure and related properties of intermetallics

Theoretical predictions of structure and related properties of intermetallics
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DOI:
10.1179/mst.1992.8.4.345
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发表时间:
1992-04
影响因子:
1.8
通讯作者:
D. Pettifor
D. Pettifor
中科院分区:
材料科学3区
文献类型:
--
作者:
D. Pettifor

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回顾了使用量子力学进行结构预测并在原子水平上提供见解的最新进展,涉及金属间化合物。特别是,解决了为什么一些四方 D022 三铝化物(例如 TiAl3)可以通过合金添加物与立方 L12 结构一起稳定,而另一些(例如 NbAl3)则不能,以及为什么即使立方相稳定,它仍然是脆性的。 MST/1543
Recent developments in the use of quantum mechanics to make structural predictions and provide insights at the atomic level are reviewed with respect to intermetallics. In particular, the question is addressed of why some tetragonal D022 trialuminides (e.g. TiAl3) can be stabilised with the cubic L12 structure by alloying additions but others (e.g. NbAl3) cannot, and why, if the cubic phase is stabilised, it remains brittle. MST/1543