Zr-Ti-based Be-bearing glasses optimized for high thermal stability and thermoplastic formability
Zr-Ti-based Be-bearing glasses optimized for high thermal stability and thermoplastic formability
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DOI：
10.1016/j.actamat.2008.02.001
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发表时间：
2008-06-01
期刊：
影响因子：
9.4
通讯作者：
Johnson, William L.
中科院分区：
文献类型：
--
作者：
Wiest, Aaron;Duan, Gang;Johnson, William L.
报道了一类新型的Zr-Ti基含Be玻璃形成成分，该成分具有高的热稳定性和良好的玻璃形成能力。通过重新检查Zr-Ti-Be相图，获得了优化的三元组合物，用于生产具有高热稳定性和适度玻璃形成能力的玻璃的区域。通过在优化的三元成分中引入第四种元素，获得了具有Zr41.2Ti13.8Ni10Cu12.5Be22.5（Vitreloy-1）的两倍的热稳定性的四元合金，同时表现出良好的玻璃形成能力。本文报道了表现出超过15 mm的临界铸造厚度和高达165 ℃的热稳定性的优化的四元合金。这些合金的良好的热稳定性使得它们对于可以在过冷液体区域中以类似于聚合物成形的方式热塑性地进行的成形工艺具有吸引力。(C)2008 Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
A new class of Zr-Ti-based Be-bearing (Vitreloy) glass-forming compositions that exhibit high thermal stability and good glass-forming ability is reported. Optimized ternary compositions were obtained by re-examining the Zr-Ti-Be phase diagram for regions that produce glasses having high thermal stability and modest glass-forming ability. By incorporating a fourth element in the optimized ternary compositions, quaternary alloys were obtained having thermal stabilities twice that of Zr41.2Ti13.8Ni10Cu12.5Be22.5 (Vitreloy-1) while exhibiting good glass-forming abilities. Optimized quaternary alloys exhibiting critical casting thicknesses exceeding 15 mm and thermal stabilities as high as 165 degrees C are reported herein. The good thermal stability of these alloys renders them attractive for forming processes that can be performed thermoplastically in the supercooled liquid region, in a manner similar to the forming of polymers. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.