温度对Cf/Al与TiAl自蔓延连接接头界面及性能的影响
Influence of temperature on microstructure and properties of Cf/Al and TiAl SHS joint
-
摘要: 采用自蔓延连接方法,在真空炉中利用中间层14Al-2Ni-3CuO实现了Cf/Al复合材料与TiAl合金的连接.在连接接头中,靠近TiAl侧,中间层与TiAl生成TiAl3;靠近Cf/Al侧,中间层与Cf/Al生成 NiAl3;在Cf/Al复合材料中,中间层的Ni原子扩散到复合材料中,在Cf/Al也有 NiAl3生成.连接温度对接头界面组织及接头强度影响较大,随着连接温度的升高,中间层与TiAl生成的TiAl3层厚度明显增加.接头抗剪强度先逐渐增大,在550℃时最高可达26.9 MPa,当连接温度达到600℃时,接头的抗剪强度迅速降低.连接温度较低时,断裂多发生在靠近中间层的TiAl侧;连接温度较高时,断裂多发生在靠近中间层的Cf/Al复合材料侧.Abstract: Cf/Al composite was joined to TiAl alloy by SHS process in a vacuum furnace with 14Al-2Ni-3CuO interlayer.On TiAl side,TiAl3 layer formed in the interface; on Cf/Al side,NiAl3 generated in the interface.Within Cf/Al,NiAl3 was also produced due to the diffusion of Ni from the interlayer.The joining temperature greatly affected the microstructure and mechanical properties of the resultant joints.With the increasing of joining temperature,the TiAl3 layer in the interface became thicker and the mechanical properties of the joints increased obviously, and the shear strength of joints reached 26.9MPa at 550℃.However,when the joining temperature exceeded 600℃,the shear strength descended rapidly.When the joining temperature was low,the fracture mostly happened on TiAl side.While the joining temperature became higher,the fracture generally occurred on Cf/Al side.
-
Keywords:
- composites /
- SHS joining /
- microstructure /
- joint property
-
-
期刊类型引用(8)
1. 谭钦文，邓黎鹏，易润华，程东海，李东阳. Ni中间层镁/钛异种材料电阻点焊接头组织与性能. 材料导报. 2023(07): 192-195 . 
百度学术
2. 何子涛，黄本生，黄思语，刘罗林. 焊接温度对AZ91/TC4扩散焊接接头组织和性能的影响. 材料热处理学报. 2023(06): 191-198 . 百度学术
3. 陈国财，胡德安，程东海，刘亚明. 添加Ni中间层的镁/钛激光熔钎焊工艺及接头性能研究. 南昌航空大学学报(自然科学版). 2021(01): 63-67+108 . 百度学术
4. 许欣，靳广胜，刘颖. 激光功率对镁合金与镀锌钢激光熔钎焊组织和力学性能影响. 热加工工艺. 2019(03): 76-79 . 百度学术
5. 孙逸铭，张凯平，檀财旺，赵洪运. 镀Cu层调控AZ31B/TC4激光熔钎焊接特性. 焊接学报. 2019(02): 47-51+163 . 本站查看
6. 江莉，方林宏，蒋蓓. 纯钛/镁合金异种材料电阻点焊接头组织和性能分析. 焊接. 2018(07): 39-42+67 . 百度学术
7. 张泽群，张凯平，檀财旺，周利，周珍珍. 镁/钛异种合金焊接的研究现状与展望. 焊接. 2017(11): 21-27+70 . 百度学术
8. 孟圣昊，檀财旺，陈波，邓枫昱，刘多，冯吉才. 镁/铜异种金属激光填丝熔钎焊接特性分析. 焊接学报. 2017(08): 41-44+67+130-131 . 本站查看
其他类型引用(2)
计量
- 文章访问数: 198
- HTML全文浏览量: 3
- PDF下载量: 89
- 被引次数: 10
下载:
