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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Effects of Zr on the amorphization of Cu-Ni-Zr alloys prepared by mechanical alloying
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Effects of Zr on the amorphization of Cu-Ni-Zr alloys prepared by mechanical alloying

机译：Zr对机械合金化制备的Cu-Ni-Zr合金的作用

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摘要

This work presents the effects of high energy milling with different Ni and Zr ratios on the amorphization of ternary Cu-Ni-Zr alloys (initially, Cu-43Ni-7Zr, Cu-12Ni-31Zr, Cu-33Ni-7Zr, and Cu-12Ni-23Zr; and later, Cu-23Ni-15Zr and Cu-11Ni-7Zr). Microstructure was determined using X-Ray diffraction and electron microscopy. Results were compared to thermodynamic models. In the ternary alloys under study, the lattice parameter of the Cu-Ni solid solution was generally correlated to the amounts of nickel incorporated into the Cu lattice. However, longer milling times reduced that lattice parameter and facilitated Zr insertion into the solid solution. For example, after 5 h of milling time, microstructural analysis showed the formation of a solid solution with cubic structure in Cu-43Ni-7Zr. This pattern is consistent with the presence of a lattice parameter between that of Cu and Ni (alpha-phase); in contrast, the Cu-33Ni-7Zr alloy showed an alpha-phase and another similar to Zr. Results suggest that, as the amount of nickel increases, the ability to form an amorphous phase decreases. Additionally, experimental and thermodynamic data showed a solid-solution formation stage, followed by an amorphous phase formation stage that occurred as milling time and Zr content increased. (C) 2018 Published by Elsevier B.V.
机译：该工作介绍了高能量铣削在三元Cu-Ni-Zr合金的非镍和Zr比例中具有不同Ni和Zr比的影响（最初，Cu-43Ni-7zr，Cu-12Ni-31zr，Cu-33ni-7zr和Cu- 12NI-23ZR;及以后，Cu-23Ni-15Zr和Cu-11ni-7zr）。使用X射线衍射和电子显微镜测定微观结构。结果与热力学模型进行了比较。在研究的三元合金中，Cu-Ni固溶体的晶格参数通常与掺入Cu格子中的镍的量相关。然而，更长的铣削时间将该晶格参数和促进Zr插入固体溶液中的较长。例如，在铣削时间5小时之后，微结构分析显示Cu-43Ni-7zr中具有立方结构的固溶体。该模式与Cu和Ni（α相）之间的晶格参数的存在一致;相反，Cu-33Ni-7Zr合金显示α相和另一个类似于Zr的α相。结果表明，随着镍的量增加，形成非晶相的能力降低。另外，实验性和热力学数据显示了固溶体形成阶段，其次是磨削时间和Zr含量增加的非晶相形成阶段。 （c）2018由elestvier b.v出版。

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