金属加工（热加工）Issue(2)：33-39,7.
Ni箔厚度对Ti65/Nb521接触反应钎焊接头组织与性能的影响
Effects of Ni foil thickness on the microstructure and properties of Ti65/Nb521 contact reaction brazed joints
朱晗 1毕建勋 1李栋 1李宏利 1赵晨昊 1梁德彬 1李伯涛 1康黎1
作者信息
- 1. 航天材料及工艺研究所 北京 100076
- 折叠
摘要
Abstract
Using Ni foils of different thicknesses(10μm,50μm and 100μm),contact reaction brazing of Ti65 and Nb521 alloys was performed at 1150℃ for 20min.The influence of Ni foil thickness on interfacial micro structure evolution and mechanical properties was investigated.Results show that Ni foil thickness critically governs interfacial reactions,increasing foil thickness leads to a progressive increase in reaction layer thickness.At 100μm,interfacial reactions are markedly intensified,producing a thick,complex reaction layer with abundant brittle intermetallic compounds.Although all joints exhibit dense metallurgical bonding,their mechanical properties differ significantly.The joint brazed with a 50μm Ni foil achieves the highest shear strength of 394MPa,with fracture occurring in the Nb521 base metal.In contrast,excessive brittle phase formation with a 100μm Ni foil degrades interfacial bonding and significantly reduces shear strength.These results demonstrate that controlling Ni foil thickness is an effective approach to tailoring the interfacial microstructure and mechanical performance of Ti65/Nb521 dissimilar metal brazed joints for high-temperature applications.关键词
Ni箔/Ti65/Nb521异种金属/接触反应钎焊/界面组织/力学性能Key words
Ni foil/Ti65/Nb521 dissimilar metals/contact reaction brazing/interfacial microstructure/mechanical properties引用本文复制引用
朱晗,毕建勋,李栋,李宏利,赵晨昊,梁德彬,李伯涛,康黎..Ni箔厚度对Ti65/Nb521接触反应钎焊接头组织与性能的影响[J].金属加工（热加工）,2026,(2):33-39,7.
