Nanoindentation Mechanical Properties of Indium-Alloyed Cu-Based Bulk Metallic Glasses
Nanoindentation Mechanical Properties of Indium-Alloyed Cu-Based Bulk Metallic Glasses
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DOI：
10.1007/s11665-013-0765-y
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发表时间：
2014-02
影响因子：
2.3
通讯作者：
Jili Wu;Ye Pan;J. Pi
中科院分区：
文献类型：
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作者：
Jili Wu;Ye Pan;J. Pi
本文对两种铟合金化铜基大块金属玻璃Cu54Zr37Ti8In1和Cu50Zr37Ti8In5进行了纳米压痕测试。这两种块体金属玻璃在结构上都具有同质性质。大块金属玻璃的硬度和杨氏模数都不表现出与加载速率有关的特性。In的加入降低了大块金属玻璃的硬度和杨氏模数，但提高了其蠕变抗力。还研究了两种大块金属玻璃的压痕蠕变。蠕变过程的位移-时间曲线用广义开尔文模型描述。对每种大块金属玻璃的蠕变位移、柔顺谱和延迟谱进行了对比分析。结果表明，Cu50Zr37Ti8In5具有较好的室温蠕变抗力和较松弛状态。
In this paper, two Indium-alloyed Cu-based bulk metallic glasses, Cu54Zr37Ti8In1and Cu50Zr37Ti8In5, have been evaluated with nanoindentation testing. Both bulk metallic glasses have homogenous nature in structure. Both hardness and Young’s modulus of bulk metallic glasses do not show a loading rate-dependent. Addition of In decreases hardness and Young’s modulus, but increases creep-resistance of bulk metallic glasses. Indentation creep of two bulk metallic glasses has also been investigated. The displacement-time curves of creep processes were described with generalized Kelvin model. The creep displacement, compliance spectrum, and retardation spectrum for each bulk metallic glass were discussed comparatively. The results showed that Cu50Zr37Ti8In5has better creep-resistance at room temperature and a more relaxed state.