Effect of cooling rate on the bending plasticity of Zr55Al10Ni5Cu30 bulk metallic glass
Effect of cooling rate on the bending plasticity of Zr55Al10Ni5Cu30 bulk metallic glass
复制标题
冷却速率对Zr55Al10Ni5Cu30块体金属玻璃弯曲塑性的影响
DOI：
10.1016/j.jallcom.2012.02.126
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发表时间：
2012-06-25
影响因子：
6.2
通讯作者：
Zhou, Y. H.
中科院分区：
文献类型：
--
作者：
Hu, Y.;Yan, H. H.;Zhou, Y. H.
通过改变铸态样品的厚度，研究了冷却速度对大块非晶合金的弯曲塑性的影响。结果表明，随着铸态样品厚度从1 mm增加到3 mm，显微组织中的短程有序化增强，直到最厚的样品出现明显的纳米晶化，但在相同测试规格下测得的弯曲塑性先降低后增加。结果表明，自由体积和结构非均质性共同控制着金属玻璃的塑性。(C)2012爱思唯尔B.V.保留所有权利。
The effect of cooling rate on the bending plasticity of Zr55Al10Ni5Cu30 bulk metallic glass was investigated by varying the thickness of the as-cast sample. It turned out that as the thickness of the as-cast sample increases from 1 to 3 mm, short-range ordering in the microstructures is enhanced until noticeable nanocrystallization occurs in the thickest sample, but the bending plasticity measured under the same test specification first decreases and then increases. It is suggested that both free volume and structural heterogeneity dominate the plasticity of metallic glasses. (C) 2012 Elsevier B.V. All rights reserved.