Microstructural and mechanical characterisation of non-equiatomic Al2.1Co0.3Cr0.5FeNi2.1 high-entropy alloy fabricated via wire-arc additive manufacturing

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Philosophical Magazine Letters Pub Date : 2021-06-07 DOI:10.1080/09500839.2021.1936257

K. Osintsev, S. Konovalov, V. Gromov, I. Panchenko, Y. Ivanov

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引用次数: 10

Abstract

ABSTRACT Gas metal arc welding based on wire arc additive manufacturing was adopted to fabricate a non-equiatomic Al2.1Co0.3Cr0.5FeNi2.1 thick-walled component. The combined cable wire composed of three filaments with different elemental compositions was used as the feeding material. The microstructure and mechanical properties of the as-deposited component were investigated. The deposited sample consisted of dendrite grains ranging in size from 5 to 15 µm and interdendritic regions. The compressive yield strength and ultimate compressive strength of the obtained material are 550 and 1899 MPa. The microhardness test revealed an average value of 463 HV. The nanohardness and the elastic modulus of the sample are 10.4 and 304 GPa, respectively. Energy-dispersive spectroscopy showed that the elemental distribution in the top, middle, and bottom areas of the sample is uniform. X-ray diffraction analysis revealed two main phases of Al-Ni-Co-rich B2 and Fe-Cr-rich A2 in the material.

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线弧增材制造非等原子Al2.1Co0.3Cr0.5FeNi2.1高熵合金的组织和力学性能

摘要采用基于焊丝电弧焊增材制造的气体保护焊方法，制备了非等原子Al2.1Co0.3Cr0.5FeNi2.1厚壁构件。使用由三根不同元素组成的细丝组成的组合电缆线作为馈电材料。研究了沉积态成分的微观结构和力学性能。沉积的样品由尺寸从5到15的枝晶颗粒组成 µm和枝晶间区域。所得材料的抗压屈服强度和极限抗压强度分别为550和1899 MPa。显微硬度测试显示平均值为463HV。样品的纳米硬度和弹性模量分别为10.4和304 GPa。能量色散光谱表明，样品的顶部、中部和底部区域的元素分布均匀。X射线衍射分析揭示了材料中富含Al-Ni-Co的B2和富含Fe-Cr的A2两个主要相。

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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.