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1. 中国航空制造技术研究院航空焊接与连接技术航空科技重点实验室,北京,100024
2. 哈尔滨工业大学材料结构精密焊接与连接全国重点实验室,哈尔滨,150001
3. 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
纸质出版:2026
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陈修凯, 陶军, 卞红, 等. Ni基高熵钎料钎焊CMC/高温合金接头界面组织和力学性能[J]. 航空制造技术, 2026,69(3).
CHEN Xiukai, TAO Jun, BIAN Hong, et al. Interfacial Microstructure and Mechanical Properties of CMC/Superalloy Joints Brazed With Ni-Based High-Entropy Filler[J]. Aeronautical Manufacturing Technology, 2026, 69(3).
陈修凯, 陶军, 卞红, 等. Ni基高熵钎料钎焊CMC/高温合金接头界面组织和力学性能[J]. 航空制造技术, 2026,69(3). DOI: 10.16080/j.issn1671-833x.25020234.
CHEN Xiukai, TAO Jun, BIAN Hong, et al. Interfacial Microstructure and Mechanical Properties of CMC/Superalloy Joints Brazed With Ni-Based High-Entropy Filler[J]. Aeronautical Manufacturing Technology, 2026, 69(3). DOI: 10.16080/j.issn1671-833x.25020234.
针对航空发动机SiC
f
/ SiC–高温合金热端部件的连接,研发了一种Ni 基高熵钎料,并研究了钎焊温度对SiC
/SiC – GH4950 高温合金接头界面组织和力学性能的影响。结果表明,SiC
/SiC – GH4950 接头的典型界面组织为SiC
/ SiC/(Ni,Co)
2
Si+ 石墨 / Cr
3
C
+(Ti,W,Cr)C
1–x
/ Co– Cr– Ni– W – Si– Ti +(Ni,Co)
(Al
Si) +(Ni,Co)
(Si,Ti)/ GH4950。在1220 ℃保温10 min 的条件下,SiC
/SiC – GH4950 接头的室温强度和1000 ℃下的高温强度分别为158 MPa 和66.3 MPa,接头主要断裂于(Ni,Co)
Si+石墨的薄弱区域。
A Ni-based high-entropy filler was developed for the joining of SiCf /SiC ceramic-matrix composites and superalloy hot-end components in aero-engines
and the effect of brazing temperature on the interface microstructure and mechanical properties of SiC
/SiC–GH4950 superalloy joints was studied. The results indicate that the typical interfacial microstructure of the SiC
/SiC – GH4950 joint is SiC
/SiC/(Ni
Co)
Si + graphite/Cr
+ (Ti
W
Cr)C
/Co – Cr – Ni – W – Si–Ti + (Ni
(Al
Si) + (Ni
(Si
Ti)/GH4950. Under the condition of holding at 1220 ℃ for 10 min
the room temperature strength and high-temperature strength at 1000 ℃ of the SiC
/SiC– GH4950 joint were 158 MPa and 66.3 MPa
respectively. The SiC
/SiC– GH4950 joint mainly fractured along the weak zone of (Ni
Si+graphite.
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