Microstructure and mechanical properties of SiC/Inconel 718 joints brazed with CoFeCu3.5Mn3.5Cr high-entropy alloy filler

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外文摘要：Achieving high-quality joining of silicon carbide(SiC)ceramics and Inconel 718 alloy has become a significant challenge for the brazing process,which is strongly dependent on the filler material.A novel composite interlayer consisting of high-entropy alloys(HEAs),HEA/Ni/HEA,was proposed to reduce the formation of intermetallic compounds in the brazed joints of SiC ceramics and Inconel 718 alloy.A reliable SiC/Inconel 718 brazed joint was produced at 1120℃ for 60 min.The results showed a significant reduction in the number of NiSi compounds in the brazed joint.The brazing seam structure near SiC side was filled with face-centered cubic phases with good plasticity and soft Cu-rich phases due to the high-entropy effect,which effectively suppressed the formation of intermetallic compounds.The maximum shear strength of the brazed joint reached 88 MPa,showing excellent tensile strength.The results provide a valuable basis for improving the joint quality of SiC ceramics and metals by adding high-entropy alloy fillers.

外文关键词：

High-entropy alloySiC ceramicsInconel 718 alloyBrazingComposite interlayer

作者：

Hong Li、Bo-jin Li、Yun-yue Li、Tian-ran Ding、Jian Qin、Erika Hodúlová、Yi-peng Wang

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作者单位：

College of Materials Science and Engineering,Beijing University of Technology,Beijing 100124,China

Zhengzhou Research Institute of Mechanical Engineering Co.,Ltd.,Zhengzhou 450001,Henan,China

Institute of Materials and Machine Mechanics,Slovak Academy of Sciences,Bratislava 84513,Slovak Republic

基金：

National Natural Science Foundation of ChinaBeijing Natural Science Foundation2024 BJUT Introducing Intelligence Breeding ProjectChina-CEEC Joint Education Project for Higher EducationState Key Laboratory of Advanced Brazing Filler Metals and TechnologyState Key Laboratory of Advanced Welding and Joining

项目编号：

5207401732320052024DL012021113SKLABFMT202004AWJ-20-M01

出版年：

2024

DOI：

10.1007/s42243-024-01346-8

钢铁研究学报(英文版)

钢铁研究总院

钢铁研究学报(英文版)

CSTPCD

影响因子：0.584

ISSN：1006-706X

年,卷(期)：2024.31(10)