C<sub>f</sub>/LAS复合材料的钎焊接头组织与性能分析

刘多; 牛红伟; 赵宇; 宋晓国; 冯吉才; 赵洪运

C_f/LAS复合材料的钎焊接头组织与性能分析

1.
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
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;长春工业大学材料学院, 长春 130012
3.
长春工业大学材料学院, 长春 130012
4.
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

基金项目: 中国博士后科学基金资助项目（2013M541367）；哈尔滨工业大学科研创新基金资助项目（HIT.NSRIF.201119）；山东省自然科学基金资助项目（ZR2014EEQ001）

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出版历程
- 收稿日期: 2015-02-28

Research on microstructure and mechanical properties of C_f/LAS composite brazed joint

1.
Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
2.
Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China;Institute of Materials, Changchun University of Technology, Changchun 130012, China
3.
Institute of Materials, Changchun University of Technology, Changchun 130012, China
4.
State Key Lab of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China

摘要

摘要: 采用Ag-Cu-Ti活性钎料对C_f/LAS复合材料进行了钎焊，研究了接头界面组织结构和力学性能.采用扫描电子显微镜（SEM）、能谱仪（EDS）和X射线衍射（XRD）对钎焊接头组织结构进行分析，用抗剪试验检测接头力学性能.结果表明，接头界面典型结构为C_f/LAS复合材料/TiSi₂/Cu₂Ti₄O/TiCu/Ag（s，s）+Cu（s，s）/TiCu/Cu₂Ti₄O/TiSi₂/C_f/LAS复合材料.在钎焊温度为900℃，保温时间为10 min时，接头室温抗剪强度最高达8.4 MPa.
- C_f/LAS复合材料 /
- 真空钎焊 /
- 界面组织 /
- 抗剪强度
Abstract: The Cf/LAS composite was successfully joined by using Ag-Cu-Ti filler alloy. The interfacial microstructure and mechanical property of joint were analyzed. The microstructure of the brazed joints was investigated with scanning electron microscope (SEM), energy dispersive spectrometer (EDS) and X-ray diffraction (XRD). The mechanical properties of the joints were measured with mechanical testing machine. The results show that the typical interfacial microstructure is C_f/LAS composite/TiSi₂/Cu₂Ti₄O/TiCu/Ag(s,s)+Cu(s,s)/TiCu/Cu₂Ti₄O/TiSi₂/C_f/LAS composite at brazing temperature 900℃, for 10 min. The shear strength of the joints reaches a maximum of 8.4 MPa when the temperature is 900℃ and the holding time is 10 min.
- C_f/LAS composite /
- vacuum brazing /
- interfacial microstructure /
- shear strength

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参考文献(8)

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