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首页> 美国卫生研究院文献>Materials >A Multiple Twin-Roller Casting Technique for Producing Metallic Glass and Metallic Glass Composite Strips
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A Multiple Twin-Roller Casting Technique for Producing Metallic Glass and Metallic Glass Composite Strips

机译：生产金属玻璃和金属玻璃复合带材的多辊双辊铸造技术

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摘要

To date it has not been possible to produce metallic glass strips with a thickness larger than 150 μm via single-roller melt spinning technique, and it remains challenging to produce thick metallic glass strips. In this work, a multiple twin-roller casting technique is proposed for producing thick metallic glass and metallic glass composite strips. A triple twin-roller casting device, as a specific case of the multiple twin-roller, was designed and manufactured. The triple twin-roller device possesses a high cooling rate and involves a long contact time between the melt and the strip, which makes it an efficient technique for producing metallic glass strips that avoids crystallization, although the solidification temperature ranges of metallic glasses are as wide as several hundred Kelvins. The two prepared metallic glass (MG) strips are in a fully amorphous state, and the MG strip shows excellent capacity of stored elastic energy under 3-point bending. Furthermore, the Ti-based metallic glass composite strip produced via the triple twin-roller casting exhibits a novel microstructure with much finer and more homogenously orientated β-Ti crystals, as compared with the microstructure of metallic glass composites produced by the common copper mold casting technique.
机译：迄今为止，不可能通过单辊熔融纺丝技术生产厚度大于150μm的金属玻璃带，并且生产厚的金属玻璃带仍然具有挑战性。在这项工作中，提出了一种用于生产厚金属玻璃和金属玻璃复合带的多重双辊铸造技术。作为多辊双辊的具体情况，设计并制造了三辊双辊铸造装置。三重双辊装置具有很高的冷却速度，并且在熔体和玻璃条之间的接触时间长，这使它成为一种有效的生产金属玻璃条的技术，该技术避免了结晶，尽管金属玻璃的凝固温度范围很宽。几百个开尔文两条准备好的金属玻璃（MG）带处于完全非晶态，并且MG带在三点弯曲下显示出出色的弹性能量存储能力。此外，与通过普通铜模铸法生产的金属玻璃复合材料的组织相比，通过三重双辊铸造生产的Ti基金属玻璃复合材料条具有新颖的微观结构，具有更细，更均匀的β-Ti晶体取向。技术。

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