CrMnFeCoNi高熵合金中组成元素有效原子半径的实验测定

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Philosophical Magazine Letters Pub Date : 2022-01-25 DOI:10.1080/09500839.2021.2024290

T. Teramoto, Momoko Narasaki, Katsushi Tanaka

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引用次数: 2

摘要

为了阐明高熵合金(HEAs)固溶强化的复杂机理，有必要确定作为晶格应变源的组成元素的有效原子半径。在本研究中，通过θ-2θ x射线衍射测量得到的晶格参数，计算了CrMnFeCoNi HEA中组成元素的有效原子半径，这是原子位移的基础。本研究中计算的原子半径的顺序与以往研究中通过从头计算确定的原子半径的顺序不同。从头算的结果表明，HEA的屈服应力与平均原子位移之间存在相关性。然而，本研究的实验结果并没有明确的相关性。

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Experimental determination of effective atomic radii of constituent elements in CrMnFeCoNi high-entropy alloy

ABSTRACT To elucidate the complex mechanism of solid-solution strengthening in high-entropy alloys (HEAs), it is necessary to determine the effective atomic radii of the constituent elements that are the sources of lattice strain. In the present study, the effective atomic radii of the constituent elements in CrMnFeCoNi HEA that are the basis of the atomic displacements, are evaluated from lattice parameters experimentally determined via θ–2θ X-ray diffraction measurements. The order of the evaluated atomic radii in the present study is different from that of the atomic radii determined via ab-initio calculations in previous studies. The results of the ab-initio calculations indicate a correlation between the yield stress of and the average atomic displacement in the HEA. However, no definite correlation is confirmed by the experimental results in the present study.

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来源期刊

Philosophical Magazine Letters 物理-物理：凝聚态物理

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

2.7 months

期刊介绍： Philosophical Magazine Letters is the rapid communications part of the highly respected Philosophical Magazine, which was first published in 1798. Its Editors consider for publication short and timely contributions in the field of condensed matter describing original results, theories and concepts relating to the structure and properties of crystalline materials, ceramics, polymers, glasses, amorphous films, composites and soft matter. Articles emphasizing experimental, theoretical and modelling studies on solids, especially those that interpret behaviour on a microscopic, atomic or electronic scale, are particularly appropriate. Manuscripts are considered on the strict condition that they have been submitted only to Philosophical Magazine Letters , that they have not been published already, and that they are not under consideration for publication elsewhere.