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首页> 外文期刊>Philosophical magazine, B. Physics of condensed matter, electronic, optical, and magnetic properties >Effect of boron additions on Al-Cu-Fe icosahedral quasicrystals
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Effect of boron additions on Al-Cu-Fe icosahedral quasicrystals

机译：硼添加对Al-Cu-Fe二十面体准晶体的影响

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摘要

The structure, stability and phase relationships of a series of Al63-xCu25Fe12Bx alloys, with x ranging from 0 to 2, were investigated in this study. Increasing x resulted in a change in the solidification behaviour and microstructural scale. While the face-centred icosahedral (fci) phase was observed to be the primary solidification product in each of the samples, proportionately more AlFe (beta) was observed as x increased and, for x = 1 and 2, Al2Cu appeared. Also, the relative amount of phason strain present in the fci phase increased as x increased. Annealing experiments revealed that B has very little solid solubility in the fci phase. The chemical ordering in the fci phase also indicated a change in composition, as an overall decrease in the chemical order was observed as x increased.
机译：本研究研究了x范围为0至2的一系列Al63-xCu25Fe12Bx合金的结构，稳定性和相关系。 x的增加导致凝固行为和微观结构尺寸的变化。虽然在每个样品中均观察到以面心为中心的二十面体（fci）相是主要的固化产物，但随着x的增加，观察到的AlFe（β）比例成比例增加，并且对于x = 1和2，出现了Al2Cu。同样，fci相中存在的相子应变的相对量随x的增加而增加。退火实验表明，B在fci相中的固溶度很小。 fci相中的化学有序也表明组成发生了变化，因为观察到随着x的增加，化学有序的总体下降。

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