Short Communication Wide gap transient liquid phase bonding of NiAl–Hf to a nickel base superalloy

1999 ◽  
Vol 15 (4) ◽  
pp. 464-467 ◽  
Author(s):  
W.F. Gale ◽  
Y. Guan
Keyword(s):  
Liquid Phase ◽  
Short Communication ◽  
Transient Liquid Phase ◽  
Transient Liquid Phase Bonding ◽  
Nickel Base Superalloy ◽  
Wide Gap ◽  
Nickel Base ◽  
Base Superalloy

Transient Liquid Phase Bonding of Nickel-Base Single Crystal Alloy with a Novel Ni-Cr-Co-Mo-W-Ta-Re-B Amorphous Interlayer

2017 ◽  
Vol 36 (7) ◽  
pp. 677-682 ◽  
Author(s):  
Wei Guo ◽  
Haiyan Wang ◽  
Qiang Jia ◽  
Peng Peng ◽  
Ying Zhu
Keyword(s):  
Liquid Phase ◽  
Single Crystal ◽  
Transient Liquid Phase ◽  
Transient Liquid Phase Bonding ◽  
Nickel Base Superalloy ◽  
Vacuum Furnace ◽  
Tlp Bonding ◽  
Microhardness Profile ◽  
Nickel Base ◽  
Base Superalloy

AbstractA novel Ni-Cr-Co-W-Mo-Ta-Re-B alloy consisting of plate γ and M23B6 phases was prepared as interlayer for the transient liquid phase (TLP) bonding of Rene’ N5 nickel-base single crystal superalloy. The molten Ni-Cr-Co-W-Mo-Ta-Re-B alloy exhibited an excellent wettability on the nickel-base superalloy. The TLP bonding experiment has been carried out in vacuum furnace at 1,240 ℃ for 12 h and followed by post-weld heat treatment (PWHT) at 1,305 ℃ for 4 h. PWHT eliminated the intermetallic compounds and promoted the formation of γ´ precipitates in the bonding region. A more uniform microhardness profile of TLP joint was found after PWHT. The shear strength of the joint after PWHT significantly increased to 533.4 MPa compared with the value of 437.2 MPa without PWHT.

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