A CuZr-based bulk metallic glass composite with excellent mechanical properties by optimizing microstructure
A CuZr-based bulk metallic glass composite with excellent mechanical properties by optimizing microstructure
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通过优化微观结构，获得优异机械性能的 CuZr 基大块金属玻璃复合材料
DOI：
10.1016/j.jnoncrysol.2018.01.006
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发表时间：
2018-03-01
影响因子：
3.5
通讯作者：
Sun, Jian-Fei
中科院分区：
文献类型：
--
作者：
Jiang, Song-Shan;Huang, Yong-Jiang;Sun, Jian-Fei
详细研究了一系列 Cu48Zr48-xAl4Nbx (x = 0, 0.3, 0.8, 1.2, 1.5, 2.0 at.%) 大块金属玻璃复合材料 (BMGC) 的微观结构和机械性能对合金成分的依赖性。研究发现，掺杂元素 Nb 对所研究的 BMGC 的机械性能起着至关重要的作用。通过调整Nb含量，获得了具有高强度（约1.3 GPa）和显着拉伸塑性（约8%）的优异组合的BMGC。这种优异的机械性能可归因于多个剪切带的形成以及变形引起的马氏体从立方原始 B2 相到单斜 B19' 相的转变。
The dependence of microstructure and mechanical properties on alloy composition of a series of Cu48Zr48-xAl4Nbx (x = 0, 0.3, 0.8, 1.2, 1.5, 2.0 at.%) bulk metallic glass composites (BMGCs) was studied in detail. It was found that the doping element Nb exerts a crucial role on the mechanical properties of the studied BMGCs. By adjusting Nb content, a BMGC possessing an excellent combination of high strength (similar to 1.3 GPa) and significant tensile plasticity (similar to 8%) was obtained. Such superior mechanical performance can be attributed to the formation of multiple shear bands and the deformation-induced martensitic transformation from a cubic primitive B2 phase to a monoclinic B19' phase.