龚浩,程东海,薛行雁,李海涛,李文杰,刘钊泽,廖焕剑

• 1:南昌航空大学航空与工程制造学院
• 2:郑州机械研究所有限公司新型钎焊材料与技术国家重点实验室

摘要(Abstract)：

以Mo片为缓冲层，采用AgCuTi钎料对石英玻璃与TC4钛合金进行钎焊，以实现调控石英玻璃与TC4之间热膨胀系数的差异，降低钎缝中石英玻璃侧的应力；分析了Mo缓冲层对钎焊接头应力缓解及组织性能的影响。结果表明：Mo缓冲层的加入可以调控石英玻璃与TC4之间热膨胀系数的差异，把钎缝中石英玻璃侧的应力转移至Mo缓冲层处，减小石英玻璃侧所受应力，提高了钎焊接头的性能；同时通过Mo缓冲层的加入，可阻隔TC4母材中溶解的Ti元素向石英玻璃侧的扩散，减弱石英玻璃侧的反应，降低靠近石英玻璃侧的薄反应层厚度。当钎焊温度为900℃,保温时间10 min时，添加Mo缓冲层的钎焊接头的抗剪强度最高，达到37 MPa。

关键词(KeyWords)： 钎焊;石英玻璃;TC4钛合金;缓冲层;应力

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51865034);; 江西省自然科学基金(S2021ZRMSL1064)

作者(Author): 龚浩,程东海,薛行雁,李海涛,李文杰,刘钊泽,廖焕剑

DOI: 10.13289/j.issn.1009-6264.2022-0610

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