论文标题
可视化高熵合金中的温度依赖相位稳定性
Visualizing Temperature-Dependent Phase Stability in High Entropy Alloys
论文作者
论文摘要
高熵合金（HEAS）含有五个或更多元素的等摩尔量，是材料设计的引人注目的空间。非常重点是识别形成均匀固体的HEAS，但是这种HEAS的设计受到了在高组分空间中导航稳定关系的困难而阻碍的。传统的相图使用Barycentric坐标来表示组合轴，该组合轴需要D =（n -1）空间尺寸来表示N -Component系统，这意味着无法轻易地可视化具有N> 4个组件的HEA Systems。在这里，我们提出了放弃的barycentric组成轴，有利于两个能轴：一个形成 - 能量轴和一个“反应能量”轴。这些反船体网提供了信息密集的2D表示，该表示成功捕获了N> 4个组件系统中的复杂相位稳定关系。我们使用新图来可视化固体溶液从高温稳定性转变为淬火时的亚稳定性，并确定与亚稳态HEAS的持久性或分解相关的重要热力学特征。
High Entropy Alloys (HEAs) contain near equimolar amounts of five or more elements and are a compelling space for materials design. Great emphasis is placed on identifying HEAs that form a homogeneous solid-solution, but the design of such HEAs is hindered by the difficulty of navigating stability relationships in high-component spaces. Traditional phase diagrams use barycentric coordinates to represent composition axes, which require D = (N - 1) spatial dimensions to represent an N-component system, meaning that HEA systems with N > 4 components cannot be readily visualized. Here, we propose forgoing barycentric composition axes in favor of two energy axes: a formation-energy axis and a 'reaction energy' axis. These Inverse Hull Webs offer an information-dense 2D representation that successfully capture complex phase stability relationships in N > 4 component systems. We use our new diagrams to visualize the transition of HEA solid-solutions from high-temperature stability to metastability upon quenching, and identify important thermodynamic features that are correlated with the persistence or decomposition of metastable HEAs.
