Amorphous metallic plastic.
Amorphous metallic plastic.
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DOI：
10.1103/physrevlett.94.205502
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发表时间：
2005-05
影响因子：
8.6
通讯作者：
Bo Zhang;D. Q. Zhao;M. Pan;Weihua Wang;A. L. Greer
中科院分区：
文献类型：
--
作者：
Bo Zhang;D. Q. Zhao;M. Pan;Weihua Wang;A. L. Greer
我们报道了具有非常低的玻璃化转变温度Tg的Ce基大块金属玻璃，与许多聚合物的玻璃化转变温度相似或更低。我们证明，在接近沸腾的水中，这些材料可以重复成型，因此可以被视为金属塑料。它们的耐晶性允许在玻璃化温度以上延长成型时间，并确保在室温下具有足够的寿命。这种材料结合了聚合物的热塑性行为和金属玻璃的独特性质，对于金属合金来说是非常不寻常的，具有巨大的应用潜力，也可以促进过冷液态的研究。
We report cerium-based bulk metallic glasses with an exceptionally low glass transition temperature Tg, similar to or lower than that of many polymers. We demonstrate that, in near-boiling water, these materials can be repeatedly shaped, and can thus be regarded as metallic plastics. Their resistance to crystallization permits extended forming times above Tg and ensures an adequate lifetime at room temperature. Such materials, combining polymerlike thermoplastic behavior with the distinctive properties of metallic glasses, are highly unusual for metallic alloys and have great potential in applications and can also facilitate studies of the supercooled liquid state.