Combinatorial synthesis of high entropy alloys: Introduction of a novel, single phase, body-centered-cubic FeMnCoCrAl solid solution
Combinatorial synthesis of high entropy alloys: Introduction of a novel, single phase, body-centered-cubic FeMnCoCrAl solid solution
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DOI：
10.1016/j.jallcom.2016.08.326
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发表时间：
2017-01-15
影响因子：
6.2
通讯作者：
Schneider, J. M.
中科院分区：
文献类型：
--
作者：
Marshal, A.;Pradeep, K. G.;Schneider, J. M.
本文介绍了一种新型的FeMnCoCrAl高熵合金的合成方法。采用X射线衍射、透射菊池衍射和原子探针断层扫描等方法对合成的薄膜库进行了表征，分析了Al浓度对相形成的影响。实验结果和从头计算表明，单相，体心立方固溶体中形成的Al浓度范围扩展等原子组成的+/- 6原子%。这强调了FeMnCoCrAl高熵合金族在非等原子组成下形成单相固溶体的能力，因此具有不同的构型熵贡献。(C)2016爱思唯尔B. V.保留所有权利。
We introduce a novel, FeMnCoCrAl high entropy alloy synthesized by combinatorial sputtering and casting. The synthesized thin film library, exhibiting multiple concentration gradients, is characterized using X-ray diffraction, transmission Kikuchi diffraction and atom probe tomography, to elucidate the impact of Al concentration on phase formation. Experimental results and ab-initio calculations show that single phase, body-centered-cubic solid solutions are formed in an Al concentration range extending the equiatomic composition by +/- 6 at.%. This underlines the ability of the FeMnCoCrAl high entropy alloy family to form single phase solid solutions at non-equiatomic compositions and hence with varying configurational entropy contributions. (C) 2016 Elsevier B.V. All rights reserved.