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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >A new composition zone of bulk metallic glass formation in the Cu-Zr-Ti ternary system and its correlation with the eutectic reaction
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A new composition zone of bulk metallic glass formation in the Cu-Zr-Ti ternary system and its correlation with the eutectic reaction

机译：Cu-Zr-Ti三元体系中块状金属玻璃形成的新组成区及其与共晶反应的关系

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摘要

A new composition region of bulk metallic glass formation, around CU52Zr40Ti8, was discovered in the Cu-Zr-Ti ternary system, for which monolithic bulk metallic glass rods of 4 mm in diameter can be fabricated using copper mold casting. The solidification of the CU52Zr40Ti8 deeply-undercooled liquid mainly undergoes a univariant eutectic reaction, (L -> Cu10Zr7 + CuZr), even though this composition was predicted to be a ternary eutectic point (L -> Cu10Zr7 + CUZr + Cu2ZrTi) by CALPHAD calculations. With respect to the deep-eutectic reaction of (L -> Cu10Zr7 + CuZr) in the Cu-Zr binary alloys, alloying of Ti has a significant effect on further stabilizing the liquid, as indicated as a drop of the univariant eutectic groove, limiting the coupled growth of two crystalline phases, hence increasing the glass-forming ability. (C) 2008 Elsevier B.V. All rights reserved.
机译：在Cu-Zr-Ti三元体系中发现了一个新的大块金属玻璃形成区域，围绕CU52Zr40Ti8，可以使用铜模铸制造直径为4 mm的整体式大块金属玻璃棒。即使通过CALPHAD计算预测该成分为三元共晶点（L-> Cu10Zr7 + CUZr + Cu2ZrTi），但深过冷的CU52Zr40Ti8的凝固主要发生单变量共晶反应（L-> Cu10Zr7 + CuZr）。 。关于（L-> Cu10Zr7 + CuZr）在Cu-Zr二元合金中的深共晶反应，Ti合金化对进一步稳定液体具有显著作用，如单变量共晶槽的下降所表明两个结晶相的耦合生长，从而提高了玻璃形成能力。 （C）2008 Elsevier B.V.保留所有权利。

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