采用微小力学测试系统对经过高温老化的中温自反应精密钎焊铝蜂窝芯接头进行拉剪性能测试，并利用扫描电子显微镜及能谱仪对其进行显微组织形貌观察和成分分析，研究接头组织及成分变化与其耐高温老化性能的关系。结果表明：利用1060铝箔和铝合金复合钎焊板所制备的铝蜂窝芯在200℃高温老化12，24，36h后拉剪强度与未老化时相比均无明显下降，且接头的薄弱部分为靠近钎焊接头的母材部分。铝蜂窝芯接头组织形貌及成分分析显示，高温老化对钎缝组织中金属Zn ，Sn含量影响不大且无新的化合物相形成；钎缝组织及成分不发生明显变化是蜂窝芯接头耐高温老化的主要原因。
Tension‐shear test was carried out on middle temperature self‐brazing aluminum honeycomb cores after high temperature aging by micro mechanical test system ,and the microstructure and com‐ponent of the joints were observed and analyzed using scanning electron microscopy and energy disper‐sive spectroscopy to study the relationship between brazing seam microstructure ,component and high temperature aging properties .Results show that the tensile‐shear strength of aluminum honeycomb core joints brazed by 1060 aluminum foil and aluminum composite brazing plate after high temperature aging(200℃ /12h ,200℃ /24h ,200℃/36h) is similar to that of as‐welded joints ,and the weak part of the joint is the base metal which is near the brazing joint .The observation and analysis of the alumi‐num honeycomb core microstructure and component show that the component of Zn ,Sn at brazing seam is not much affected and no compound phase formed after high temperature aging ;therefore ,the main reason for good high temperature aging performance of self‐brazing aluminum honeycomb core is that no obvious change of brazing seam microstructure and component occurs .
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