Bending deformation behavior of Zr65Cu17.5Ni10Al7.5 bulk metallic glass with different solidification cooling rate

被引：3
|
作者：
Hu, Y. [1 ,2 ]
Yan, H. H. [2 ]
Yan, Z. J. [1 ]
Wang, X. G. [1 ]
机构：
[1] Taiyuan Univ Sci & Technol, Sch Mat Sci & Engn, Taiyuan 030024, Shanxi, Peoples R China
[2] Shanxi Key Lab Metall Mat Forming Theory & Techno, Taiyuan 030024, Shanxi, Peoples R China
来源：
AIP ADVANCES | 2018年 / 8卷 / 10期
基金：
中国国家自然科学基金;
关键词：
FREE-VOLUME; MECHANICAL-BEHAVIOR; SHEAR BANDS; PLASTICITY; STRENGTH; RELAXATION; FRACTURE; STRAIN;
D O I：
10.1063/1.5040682
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In order to further clarify the relationship between the free volume and bending plasticity, the bending properties of Zr(65)Cu(17.5)Ni(10A)l(7.5) bulk metallic glass (BMG) samples with different thicknesses corresponding to different solidification cooling rates were investigated. The results show that the bending plasticity of Zr(65)Cu(17.5)Ni(10A)l(7.5) BMG decreases with the decrease of cooling rate, which is consistent with the evolution of shear bands density revealed by the investigation of microstructure. These phenomena are mainly attributed to the decrease of free volume content with the decrease of cooling rates in spite of the increase of nanocrystallization fraction, which further confirm that free volume plays a crucial role in the deformation process of the BMGs. (c) 2018 Author(s).
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页数：7
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