Effect of static magnetic field on the chemical short-range order of CoCrFeMnNi high-entropy alloy prepared by laser powder bed fusion

IF 4.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics Pub Date : 2024-09-17 DOI:10.1016/j.intermet.2024.108498

Shuai Guo , Yufan Zhao , Shang Sui , Pengcheng Zhu , Meng Wang , Xuehui Hao , Yulai Song , Anfu Guo , Junjie Ni , Yuanbin Qin , Xin Lin

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Abstract

Recently, laser powder bed fusion (LPBF) has emerged as a potential technique for manipulating chemical short-range order (CSRO) in high-entropy alloys (HEAs), eliminating the need for homogenization treatment. The application of the magnetic field in LPBF has shown promise in refining the microstructure and optimizing the mechanical properties. However, the precise influence of magnetic field on the CSRO of LPBF-processed HEAs remains inadequately understood. Therefore, in this study, we investigate the impact of the static magnetic field on the CSRO of LPBF-processed HEAs. The findings reveal that the presence of the static magnetic field results in a reduction in CSRO, including the size and area fraction. This behavior can be attributed to the influence of the static magnetic field on the melt flow, which is perturbed by the electromagnetic damping effect and thermos-electromagnetic forces, thereby impeding the free diffusion of atoms and ultimately leading to a decrease in CSRO.

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静磁场对激光粉末床熔融制备的 CoCrFeMnNi 高熵合金化学短程有序性的影响

近来，激光粉末床熔融（LPBF）已成为操纵高熵合金（HEAs）中化学短程有序（CSRO）的一种潜在技术，无需进行均匀化处理。在 LPBF 中应用磁场已在细化微观结构和优化机械性能方面显示出前景。然而，磁场对 LPBF 处理过的 HEA 的 CSRO 的确切影响仍未得到充分了解。因此，在本研究中，我们研究了静态磁场对 LPBF 加工 HEA 的 CSRO 的影响。研究结果表明，静磁场的存在会导致 CSRO 的降低，包括尺寸和面积分数的降低。这种行为可归因于静态磁场对熔体流动的影响，熔体流动受到电磁阻尼效应和热电磁力的干扰，从而阻碍了原子的自由扩散，最终导致 CSRO 下降。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Intermetallics 工程技术-材料科学：综合

CiteScore

7.80

自引率

9.10%

发文量

291

审稿时长

37 days

期刊介绍： This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys. The journal reports the science and engineering of metallic materials in the following aspects: Theories and experiments which address the relationship between property and structure in all length scales. Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations. Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties. Technological applications resulting from the understanding of property-structure relationship in materials. Novel and cutting-edge results warranting rapid communication. The journal also publishes special issues on selected topics and overviews by invitation only.