钎焊温度对Ti60/AgCu/ZrO2接头界面组织及性能的影响

doi:10.7527/S1000-6893.2017.421402

材料工程与机械制造

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钎焊温度对Ti60/AgCu/ZrO₂接头界面组织及性能的影响

卞红¹, 胡胜鹏², 宋晓国^1,2, 周志强², 冯吉才^1,2

1. 哈尔滨工业大学先进焊接与连接国家重点实验室, 哈尔滨 150001;
2. 哈尔滨工业大学(威海) 山东省特种焊接技术重点实验室, 威海 264209

收稿日期:2017-05-08 修回日期:2017-07-31 出版日期:2017-12-15 发布日期:2017-07-31
通讯作者: 宋晓国 E-mail:xgsong@hitwh.edu.cn
基金资助:
国家自然科学基金（51405099）；国家科技重大专项（2014ZX04001131）

Effect of brazing temperature on interfacial microstructure and mechanical property of Ti60/AgCu/ZrO₂ joint

BIAN Hong¹, HU Shengpeng², SONG Xiaoguo^1,2, ZHOU Zhiqiang², FENG Jicai^1,2

1. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China;
2. Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology(Weihai Extension), Weihai 264209, China

Received:2017-05-08 Revised:2017-07-31 Online:2017-12-15 Published:2017-07-31
Supported by:
National Natural Science Foundation of China(51405099); National Science and Technology Major Project(2014ZX04001131)

摘要/Abstract

摘要： 采用AgCu钎料实现了Ti60合金和ZrO₂陶瓷的钎焊连接。使用扫描电子显微镜（Scanning Electron Microscope，SEM）、能谱仪（Energy Dispersive Spectrometer，EDS）和X射线衍射仪（X-Ray Diffractometer，XRD）等分析测试手段，对不同钎焊温度下获得的接头界面组织结构进行了分析。研究表明，Ti60/AgCu/ZrO₂接头典型界面组织为：Ti60合金/α-Ti+Ti₂Cu扩散层/TiCu+TiCu₂/Ag（s，s）+Cu（s，s）/Ti₃Cu₃O反应层/TiO反应层/ZrO₂陶瓷。随着钎焊温度的升高，α-Ti+Ti₂Cu扩散层、TiCu+TiCu₂层、Ti₃Cu₃O层及TiO层厚度均逐渐增加，颗粒状Ti-Cu化合物不断长大，Ag（s，s）和Cu（s，s）含量逐渐减少。剪切试验表明，在钎焊温度为900℃、保温时间为10 min条件下获得的接头室温抗剪强度最高为124.9 MPa，500℃和600℃抗剪强度分别为83.0 MPa和30.2 MPa。断口分析表明：接头沿ZrO₂陶瓷/钎料界面和靠近该界面的钎缝发生断裂。

关键词: AgCu钎料, Ti60合金, ZrO₂陶瓷, 钎焊, 界面组织, 力学性能

Abstract: Reliable brazing of Ti60 alloy and ZrO₂ ceramic was successfully achieved using AgCu filler metal. The interfacial microstructure and reaction products of Ti60/AgCu/ZrO₂ joints brazed at different temperatures were investigated by the Scanning Electron Microscope (SEM), Energy Dispersive Spectrometer (EDS) and X-Ray Diffractometer (XRD). Results show that the typical interfacial microstructure of the Ti60/AgCu/ZrO₂ joint was Ti60 alloy/α-Ti+Ti₂Cu diffusion layer/TiCu+TiCu₂/Ag(s,s)+Cu(s,s)/Ti₃Cu₃O layer/TiO layer/ZrO₂ ceramic. With the increase of the brazing temperature, the thickness of the diffusion layer of α-Ti+Ti₂Cu, TiCu+TiCu₂ layers, Ti₃Cu₃O layer and TiO layer adjacent to the ZrO₂ ceramic increased gradually, and the granular Ti-Cu IMCs grew gradually, meanwhile the content of the Ag-based solid solution and Cu-based solid solution decreased. The shear test indicates that the joint brazed at 900℃ for 10 min exhibited the highest shear strength of 124.9 MPa tested at room temprature, and the joint tested at 500℃ and 600℃ exhibited the shear strength of 83.0 MPa and 30.2 MPa, respectively. Typical fracture analysis displays that the brazed joint tended to fracture at the interface between the ZrO₂ ceramic and the brazing seam, and in the brazing seam adjacent to the interface.

Key words: AgCu filler, Ti60 alloy, ZrO₂ ceramic, brazing, interfacial microstructure, mechanical property

中图分类号:

V261.3⁺4

卞红, 胡胜鹏, 宋晓国, 周志强, 冯吉才. 钎焊温度对Ti60/AgCu/ZrO₂接头界面组织及性能的影响[J]. 航空学报, 2017, 38(12): 421402-421402.

BIAN Hong, HU Shengpeng, SONG Xiaoguo, ZHOU Zhiqiang, FENG Jicai. Effect of brazing temperature on interfacial microstructure and mechanical property of Ti60/AgCu/ZrO₂ joint[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(12): 421402-421402.

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钎焊温度对Ti60/AgCu/ZrO₂接头界面组织及性能的影响

Effect of brazing temperature on interfacial microstructure and mechanical property of Ti60/AgCu/ZrO₂ joint

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