Phase equilibria of an Al_(0.5)CrFeCoNiCu High Entropy Alloy

N.G. Jones; A. Frezza; H.J. Stone

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Phase equilibria of an Al_(0.5)CrFeCoNiCu High Entropy Alloy

机译：Al_（0.5）CrFeCoNiCu高熵合金的相平衡

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The phase equilibria of an Al_(0.5)CrFeCoNiCu High Entropy Alloy has been studied following 1000 h exposures at 700,850 and 1000 ℃. Above 1000 ℃, the material comprised of two fcc solid solutions, one a multi-element phase and the other a Cu rich phase. Below 1000 ℃, the fcc phases persisted, but were accompanied by the formation of two intermetallic compounds. In contrast to previous reports, the L1_2 phase was also found to precipitate through a solvus at ～ 850 ℃. The results indicated that a solid state single phase field does not exist in this material at any temperature and all of the observed phases could be rationalised with reference to existing phase diagrams. This suggests that configurational entropy does not overcome the enthalpic contribution to the Gibbs energy, which governs phase equilibria of this alloy.

机译：研究了Al_（0.5）CrFeCoNiCu高熵合金在700,850和1000℃暴露1000 h后的相平衡。在1000℃以上，该材料由两种fcc固溶体组成，一种为多元素相，另一种为富铜相。在1000℃以下，fcc相持续存在，但伴随有两种金属间化合物的形成。与以前的报道相反，在约850℃时还发现L1_2相通过固溶体沉淀。结果表明，该材料在任何温度下都不存在固态单相场，并且可以参照现有相图对所有观察到的相进行合理化处理。这表明构型熵不能克服焓对吉布斯能量的贡献，吉布斯能量决定了该合金的相平衡。

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《Materials Science and Engineering》 |2014年第6期|214-221|共8页
作者
N.G. Jones; A. Frezza; H.J. Stone;
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作者单位

Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, UK;

Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, UK;

Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, UK;

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正文语种 eng
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High entropy alloys; Phase transitions; Electron microscopy; X-ray diffraction;

机译：高熵合金;相变;电子显微镜;X射线衍射;

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专利

1. On the entropic stabilisation of an Al_(0.5)CrFeCoNiCu high entropy alloy [J] . N.G. Jones, J.W. Aveson, A. Bhowmik Intermetallics . 2014,第Null期

机译：Al_（0.5）CrFeCoNiCu高熵合金的熵稳定
2. On the entropic stabilisation of an Al_(0.5)CrFeCoNiCu high entropy alloy [J] . N.G. Jones, J.W. Aveson, A. Bhowmik Intermetallics . 2014,第Null期

机译：Al_（0.5）CrFeCoNiCu高熵合金的熵稳定
3. Fine-scale precipitation in the high-entropy alloy Al_(0.5)CrFeCoNiCu [J] . E.J. Pickering, H.J. Stone, N.G. Jones Materials Science and Engineering . 2015,第OCTa1期

机译：高熵合金Al_（0.5）CrFeCoNiNiCu中的细小析出
4. AGE HARDENING OF THE Al_(0.5)CoCrNiTi_(0.5)HIGH ENTROPY ALLOY [C] . C.-F. Lee, T.-T. Shun TMS annual meeting exhibition . 2013

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5. Characterization of a High Strength, Refractory High Entropy Alloy, AlMo0.5NbTa0.5TiZr. [D] . Jensen, Jacob. 2017

机译：高强度耐火高熵合金AlMo0.5NbTa0.5TiZr的表征。
6. Effect of Cold Rolling on the Phase Transformation Kinetics of an Al0.5CoCrFeNi High-Entropy Alloy [O] . Jun Wang, Haoxue Yang, Tong Guo, 2018

机译：冷轧对Al0.5 CoCroceni高熵合金相变动力学的影响
7. Phase equilibria of an Al0.5CrFeCoNiCu High Entropy Alloy [O] . Jones Nicholas Gwilym, Frezza A, Stone Howard James 2014

机译：Al0.5CrFeCoNiCu高熵合金的相平衡

Phase equilibria of an Al_(0.5)CrFeCoNiCu High Entropy Alloy

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