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首页> 外文期刊>Journal of Nuclear Materials: Materials Aspects of Fission and Fusion >THERMAL COMPATIBILITY STUDIES OF UNIRRADIATED U-MO ALLOYS DISPERSED IN ALUMINUM
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THERMAL COMPATIBILITY STUDIES OF UNIRRADIATED U-MO ALLOYS DISPERSED IN ALUMINUM

机译：分散在铝中的未辐射U-MO合金的热相容性研究

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The thermal compatibility of centrifugally atomized U-Mo alloys with aluminium has been studied. The results of the investigations show that the U-2 wt% Mo/aluminum dispersions increase in volume by 26% at 400 degrees C after 2000 h. This large volume change is mainly due to the formation of voids and cracks resulting from nearly complete interdiffusion of U-Mo and aluminum. No significant dimensional changes occur in the U-10 wt% Mo/aluminum dispersions. Interdiffusion between U-10 wt% Mo and aluminum is found to be minimal. The different diffusion behavior is primarily due to the fact that U-10 wt% Mo particles are much more supersaturated with substitutional molybdenum than U-2 wt% Mo particles. The aluminum diffuses into the U-2 wt% Mo particles relatively rapidly along grain boundary with nearly pure uranium, forming UAl3 almost fully throughout the 2000 h anneal, whereas the molybdenum supersaturated in the U-10 wt% Mo particles inhibits the diffusion of aluminum atoms. U-10 wt% Mo displays superior thermal compatibility with aluminum compared to U-2 wt% Mo. (C) 1997 Elsevier Science B.V. [References: 13]
机译：研究了离心雾化U-Mo合金与铝的热相容性。研究结果表明，在2000 h后，U-2 wt％Mo /铝分散体在400摄氏度下体积增加了26％。这种大的体积变化主要是由于U-Mo和铝几乎完全相互扩散而形成的空隙和裂纹。在U-10重量％的Mo /铝分散体中没有发生明显的尺寸变化。发现U-10 wt％Mo和铝之间的相互扩散很小。不同的扩散行为主要是由于以下事实：U-10 wt％Mo颗粒比U-2 wt％Mo颗粒更容易被取代钼过饱和。铝与几乎纯的铀沿晶界相对快速地扩散到U-2 wt％Mo颗粒中，在整个2000 h退火中几乎完全形成UAl3，而U-10 wt％Mo颗粒中的过饱和钼抑制了铝的扩散原子。与U-2 wt％Mo相比，U-10 wt％Mo与铝显示出优异的热相容性。（C）1997 Elsevier Science B.V. [参考文献：13]

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