Microstructural evolution and residual stress distribution of 55 % SiCp/ZL102 composite joint brazed with Al77Cu20Ti3 filler

IF 4.6 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Materials Science in Semiconductor Processing Pub Date : 2025-08-22 DOI:10.1016/j.mssp.2025.109987

Siyan Fan, Dongfeng Cheng

引用次数: 0

Abstract

In this study, the 55 % SiCp/ZL102 composite was connected by the Al₇₇Cu₂₀Ti₃ filler through vacuum brazing. The effect of the holding time on the microstructure evolution and mechanical properties of brazed joints was investigated. It was found that with the extension of the holding time, the reactants in the weld were increased, and the Ti-Al-Si ternary compound was the main compound in the weld. The Si element mainly came from the diffusion of the matrix alloy. The maximum shear strength of 81 MPa was obtained for joints brazed at 590 °C for 45 min. The fracture is distributed with tear ridges and tongue-like patterns, which is quasi-cleavage fracture. The finite element software ABAQUS was used to simulate the residual stress of the brazed joint. The simulation results showed that the mismatch of deformation degree between the filler and the base metal caused residual stress concentrated in the brazing seam.

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Al77Cu20Ti3钎料钎焊55% SiCp/ZL102复合接头的显微组织演变及残余应力分布

本研究采用Al77Cu20Ti3填料真空钎焊连接55% SiCp/ZL102复合材料。研究了保温时间对钎焊接头组织演变和力学性能的影响。结果发现，随着保温时间的延长，焊缝中的反应物增多，且以Ti-Al-Si三元化合物为主。Si元素主要来源于基体合金的扩散。在590℃下钎焊45 min，接头的最大抗剪强度为81 MPa。断口呈撕裂脊状，呈舌状，属准解理断裂。采用有限元软件ABAQUS对钎焊接头的残余应力进行了模拟。模拟结果表明，钎料与母材变形程度不匹配导致残余应力集中在钎焊缝内。

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

Materials Science in Semiconductor Processing 工程技术-材料科学：综合

CiteScore

8.00

自引率

4.90%

发文量

780

审稿时长

42 days

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