原位分散碳纤维网增强C/C复合材料- tc4合金钎焊接头

IF 3.1 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Science and Technology of Welding and Joining Pub Date : 2022-11-23 DOI:10.1080/13621718.2022.2146323

Zeyu Wang, Zhenjiang Ju, H. Butt, Guo-Hui Li, Tianmou Zhao, Zhao Mo, Manni Li, Zhijie Wang

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引用次数: 1

摘要

在本研究中，利用碳纤维增强碳基复合材料(C/C)薄片作为中间层，制备了碳纤维增强碳基复合材料与TC4合金的坚固钎焊接头。C/C片夹层增强了合金的显微组织和力学性能。在钎焊过程中，大量原位形成的碳纤维从C/C片束中分离出来，呈三维互锁网络分布。这些独特的纤维消耗了过量的Ti，以抑制钎焊缝中过量脆性Ti - cu化合物的形成。这有效地降低了热膨胀系数，从而消除了节理界面的高残余应力。C/C片夹层钎焊接头的平均抗剪强度比直接钎焊接头高1.65倍。

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In situ dispersed carbon fibre network for reinforcing a C/C composite–TC4 alloy brazed joint

ABSTRACT In this work, a robust brazed joint of carbon fibre-reinforced carbon-based (C/C) composite and TC4 alloy was produced by utilising a slice of C/C as an interlayer. The C/C slice interlayer caused microstructural and mechanical property enhancement. During brazing, massive in situ formed carbon fibres broke away from the C/C slice bundles and were distributed in a three-dimensional interlocked network. These unique fibres consumed excessive Ti to inhibit the formation of excess brittle Ti–Cu compounds in the brazing seam. This reduced the coefficient of thermal expansion effectively, consequently relieving the high residual stress in the joint interface. The average shear strength of the joint brazed with the C/C slice interlayer reached 1.65 times higher than the directly brazed one.

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来源期刊

Science and Technology of Welding and Joining 工程技术-材料科学：综合

CiteScore

6.10

自引率

12.10%

发文量

审稿时长

1.7 months

期刊介绍： Science and Technology of Welding and Joining is an international peer-reviewed journal covering both the basic science and applied technology of welding and joining. Its comprehensive scope encompasses all welding and joining techniques (brazing, soldering, mechanical joining, etc.) and aspects such as characterisation of heat sources, mathematical modelling of transport phenomena, weld pool solidification, phase transformations in weldments, microstructure-property relationships, welding processes, weld sensing, control and automation, neural network applications, and joining of advanced materials, including plastics and composites.