Phase separation in equiatomic AlCoCrFeNi high-entropy alloy

被引：328

作者：

Manzoni, A. ^{[1
]}

Daoud, H. ^{[2
]}

Voelkl, R. ^{[2
]}

Glatzel, U. ^{[2
]}

Wanderka, N. ^{[1
]}

机构：

[1] Helmholtz Zentrum Berlin, Inst Appl Mat, D-14109 Berlin, Germany

[2] Univ Bayreuth, D-95447 Bayreuth, Germany

来源：

ULTRAMICROSCOPY | 2013年 / 132卷

关键词：

High entropy alloys; Atom probe tomography; Phase separation; Spinodal decomposition; MICROSTRUCTURE; DECOMPOSITION; SYSTEM;

D O I：

10.1016/j.ultramic.2012.12.015

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

The microstructure of the as cast AlCoCrFeNi high entropy alloy has been investigated by transmission electron microscopy and atom probe tomography. The alloy shows a very pronounced microstructure with clearly distinguishable dendrites and interdendrites. In both regions a separation into an Al-Ni rich matrix and Cr-Fe-rich precipitates can be observed. Moreover, fluctuations of single elements within the Cr-Fe rich phase have been singled out by three dimensional atom probe measurements. The results of investigations are discussed in terms of spinodal decomposition of the alloying elements inside the Cr-Fe-rich precipitates. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：212 / 215

页数：4

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