共晶高熵合金增材制造的研究进展:工艺-显微组织-力学性能的耦合关系和操作策略

IF 6.3 2区 材料科学 Q2 CHEMISTRY, PHYSICAL
Xinjie Zhang, Yiwei Sun, Cijun Shuai, Chengde Gao
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引用次数: 0

摘要

多相高熵共晶合金(EHEAs)具有良好的综合性能,具有良好的强度和延展性,是先进材料研究的新热点,具有广阔的应用前景。然而,开发EHEAs的主要挑战在于对纳米/超细共晶微观结构和相演变的控制。近年来,增材制造(AM)通过对微观结构和性能的精确操纵,在解决这些挑战方面显示出令人鼓舞的能力。本文综述了增材制造技术在EHEAs微观结构演变和操作策略方面的最新研究进展。首先,综述了EHEAs的组成体系,主要包括CoCrFeNi、FeCoNiAl、TiHfNiFeNb、CoMoNiVW等体系的最新进展。本文还总结了EHEAs的典型共晶结构,包括片层状、开花状、种子状、球状和短棒状结构。讨论了多相共晶结构的变形机理以及相界面对EHEAs性能的影响。然后,综述了am制备EHEAs的研究进展,重点介绍了激光粉末床熔融、定向能沉积和电弧增材制造。系统地阐明了工艺原理、微观结构演变和相应的操作策略,以及每个AM工艺固有的性能属性。考虑到不同增材制造技术的独特优势和局限性,持续的研究和技术创新对于提高增材制造制备的EHEAs的性能和适用性至关重要,特别是在与材料特性和工艺操作相关的挑战方面。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Progress on additive manufacturing of eutectic high entropy alloys: coupling correlations and manipulation strategies for process-microstructure-mechanical performance

Progress on additive manufacturing of eutectic high entropy alloys: coupling correlations and manipulation strategies for process-microstructure-mechanical performance
As a new research hotspot of advanced materials, eutectic high entropy alloys (EHEAs) with multiphase and fine microstructures are well known for their excellent comprehensive properties, including balanced strength and ductility, endowing them great potential for wide applications. However, the main challenges of developing EHEAs lie in the manipulation of nano-/ultrafine eutectic microstructure and phase evolutions. In recent years, additive manufacturing (AM) has shown encouraging capability in addressing these challenges by precise manipulation over microstructure and performance. This review focuses on the state-of-the-art studies of AM techniques on the microstructure evolution and manipulation strategies of EHEAs. Firstly, the compositional systems of EHEAs are reviewed, with recent advancement mostly in CoCrFeNi, FeCoNiAl, TiHfNiFeNb, CoMoNiVW, etc., systems. The typical eutectic characteristics of EHEAs are also summarized in terms of lamellar, flowering, seedlike, globose, and short-sticklike structures. The deformation mechanisms of multiphase eutectic structures and the influence of phase interfaces on the properties of EHEAs are discussed. Afterwards, this review summarizes the development of AM-prepared EHEAs focusing on laser powder bed fusion, directed energy deposition, and arc additive manufacturing. A thorough examination of the process principles, microstructural evolution, and the corresponding manipulation strategies, alongside the performance attributes inherent to each AM process, are systematically elucidated. Given to the distinct advantages and limitations for different AM techniques, sustained research and technological innovation are paramount in advancing the performance and applicability of AM-prepared EHEAs, particularly in the challenges related to material properties and process manipulation.
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来源期刊
Journal of Alloys and Compounds
Journal of Alloys and Compounds 工程技术-材料科学:综合
CiteScore
11.10
自引率
14.50%
发文量
5146
审稿时长
67 days
期刊介绍: The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.
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