| 不均匀性抑制Zr基块状金属玻璃的脆化 |
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| 引用本文： | 侯琪琪,周佳路,王拓.不均匀性抑制Zr基块状金属玻璃的脆化[J].金属热处理,2023,48(2):164-169. |
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| 作者姓名： | 侯琪琪 周佳路 王拓 |
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| 作者单位： | 1.新疆大学 新疆固态物理与器件重点实验室, 新疆 乌鲁木齐 830017;2.新疆大学 物理科学与技术学院, 新疆 乌鲁木齐 830017 |
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| 基金项目： | 新疆维吾尔自治区自然科学基金(2020D01C065);新疆大学大学生创新训练计划(S202210755105) |
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| 摘 要： | 研究了Zr47.25Cu47.25Al5.5块状金属玻璃(BMG)在铸态和不同退火时间下的室温压缩塑性与微观结构之间的关系。结果表明，Zr47.25Cu47.25Al5.5BMG具有3.96%的压缩塑性，经过0.5、1.5、3和6 h退火后，该合金的压缩塑性均有所提升。在0.5 h退火后，压缩塑性达到最高(5.84%)。铸态Zr47.25Cu47.25Al5.5BMG的微观结构呈现出5 nm左右网状分布。经过6 h退火后，富Cu的网状区域尺寸为50 nm左右，并伴有少量晶化。这种微观结构的不均匀性使该铸态合金在室温具有一定的塑性，同时抑制了其在退火中因自由体积减小而导致的脆化。
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| 关 键 词： | 块状金属玻璃 低温退火 塑性 不均匀性 |
| 收稿时间： | 2022-09-27 |
Inhomogeneity inhibiting embrittlement of Zr-based bulk metallic glass |
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| Hou Qiqi,Zhou Jialu,Wang Tuo.Inhomogeneity inhibiting embrittlement of Zr-based bulk metallic glass[J].Heat Treatment of Metals,2023,48(2):164-169. |
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| Authors: | Hou Qiqi Zhou Jialu Wang Tuo |
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| Affiliation: | 1. Xinjiang Key Laboratory of Solid State Physics and Devices, Xinjiang University, Urumqi Xinjiang 830017, China;2. School of Physics Science and Technology, Xinjiang University, Urumqi Xinjiang 830017, China |
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| Abstract: | Correlation between compressive plasticity at ambient temperature and microstructure of as-cast and annealed Zr47.25Cu47.25Al5.5bulk metallic glass (BMG) was studied. The results show that the compressive plasticity of the as-cast Zr47.25Cu47.25Al5.5BMG is 3.96%, and the compressive plasticity of the alloys is improved after annealing for 0.5, 1.5, 3 and 6 h, respectively. After annealing for 0.5 h, the compressive plasticity is the largest of 5.84%. The microstructure of the as-cast Zr47.25Cu47.25Al5.5BMG presents a network distribution of about 5 nm. After annealing for 6 h, the size of the Cu-rich network zone is about 50 nm with a small amount of crystallization. This microstructure inhomogeneity leads to the plasticity of the as-cast alloy at ambient temperature, and inhibits the embrittlement which is caused by the reduction of free volume during annealing. |
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| Keywords: | bulk metallic glass low temperature annealing plasticity inhomogeneity |
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