采用熔体萃取法和等温退火法设计强导结合的b2相有序Cu-Pd-Ag-Ru超细纤维

IF 4.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics Pub Date : 2025-03-26 DOI:10.1016/j.intermet.2025.108762

Y.Y. Sun , Y.H. Gao , Y.B. Wang , Y. Huang , M.C. Jian , F.C. Wang , Y. Li , L. Fu , X. Jin , H.B.C. Yin , J. Xu , S.D. Feng , J.Q. Wang , J.T. Huo , M. Gao

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引用次数: 0

摘要

铜合金具有优良的导电性和导热性，在电气和电子器件中得到了广泛的应用。然而，强度和导电性之间的权衡关系限制了它们在电触点和电路引线中的应用。本研究提出了一种基于熔体萃取和适当后热处理的实验策略来设计一种b2相有序Cu-Pd-Ag-Ru超细纤维。结果表明，该超细纤维具有优异的强度和导电性综合性能。与铸态合金相比，所设计的超细纤维强度提高了2.75倍，电导率提高了70%。强化机理可归结为FCC相向B2相转变、晶粒细化以及Ru和Ag析出相的形成。此外，电导率的显著提高主要是由于引入了B2有序相和纵向晶粒的伸长。本研究不仅为电触点和电路引线提供了一种优良的铜合金，而且为克服金属的强度-导电性权衡提供了一种新的策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Designing B2-phase ordered Cu-Pd-Ag-Ru microfiber with strength-conductivity combination via melt-extraction and isothermal annealing

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Designing B2-phase ordered Cu-Pd-Ag-Ru microfiber with strength-conductivity combination via melt-extraction and isothermal annealing

Copper alloys are widely used in the electrical and electronic devices due to their excellent electrical and thermal conductivity. However, the trade-off relationship between strength and conductivity limits their application in the electrical contacts and circuit leads. In this study, an experimental strategy based on melt extraction and appropriate post-heat treatment was proposed to design one kind of B2-phase ordered Cu-Pd-Ag-Ru microfiber. It was found that this microfiber displays the excellent comprehensive performance of the strength and the conductivity. In comparison with the cast alloy, the strength for the designed microfiber is increased by 2.75 times and there appears the 70 % enhancement for the electrical conductivity. The strengthening mechanisms can be attributed to the phase transition from FCC to B2 phase, grain refinement, and the formation of Ru and Ag precipitates. Furthermore, the significant improvement in electrical conductivity is primarily due to the introduction of the B2 ordered phase and the elongation of longitudinal grains. The current study not only provides one kind of excellent copper alloys for the electrical contacts and circuit leads, but also offers a new strategy for surmounting the strength-conductivity trade-off in metals.

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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.