摘要
利用Ti,Hf的反应活性配制的高温活性钎料,对SiC_(f)/SiC复合材料与MX246A高温合金进行了高温钎焊,并实现两者高强度钎焊连接,分析了接头界面微观组织、物相组成与力学性能.结果表明,(SiC_(f)/SiC)/MX246A钎焊接头界面中有Ni_(2)Si,NiTi,TiC,NiAl,Ni_(31)Si_(12)等产物生成,其结构可以表示为:(SiC_(f)/SiC)/TiC+NiTi+Ni_(2)Si+Ni_(31)Si_(12)+(Ni,Cr)+(Cr,W)+(W,Mo)/MX246A.在室温及1000℃下,钎焊接头抗剪强度均达到70 MPa以上,接头断裂于复合材料侧.在1270℃保温15 min条件下,(SiC_(f)/SiC)/MX246A钎焊接头1000℃的平均抗剪强度可达到90 MPa.
The brazing of SiC_(f)/SiC and MX246A using high temperature active solider with Ti and Hf to make high quality connection was carried out.The microstructure,phases and mechanical property was analyzed.The results showed that there were compounds as Ni_(2)Si,NiTi,TiC,NiAl,Ni_(31)Si_(12) formed in the interface and the phases consists of(SiC_(f)/SiC)/MX246A joints was(SiC_(f)/SiC)/TiC+NiTi+Ni_(2)Si+Ni_(31)Si_(12)+(Ni,Cr)+(Cr,W)+(W,Mo)/MX246A and the shear strength of the joint was up to 90 MPa.
作者
侯金保
赵磊
HOU Jinbao;ZHAO Lei(Aeronautical Key Laboratory for Welding and Joining Technologies,AVIC Manufacturing Technology Institute,Beijing 100024,China)
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2021年第4期74-78,I0004,I0005,共7页
Transactions of The China Welding Institution
基金
航空联合基金资助项目(6141B05010701)。
关键词
复合材料
高温合金
钎焊
界面组织
接头性能
Composite
superalloy
brazing
interface microstructure
property of joint
