Morphology of weld heat-affected zone liquation cracking in Ta-modified cast Alloy 718

Metallography ◽  
1989 ◽  
Vol 23 (3) ◽  
pp. 219-229 ◽  
Author(s):  
S.L. West ◽  
W.A. Baeslack ◽  
T.J. Kelly
Keyword(s):  
Heat Affected Zone ◽  
Cast Alloy ◽  
Alloy 718 ◽  
Liquation Cracking ◽  
Cast Alloy 718 ◽  
Zone Liquation ◽  
Weld Heat

Morphology of weld heat-affected zone liquation in cast alloy 718

Metallography ◽  
1986 ◽  
Vol 19 (3) ◽  
pp. 371-379 ◽  
Author(s):  
W.A. Baeslack ◽  
D.E. Nelson
Keyword(s):  
Heat Affected Zone ◽  
Cast Alloy ◽  
Alloy 718 ◽  
Cast Alloy 718 ◽  
Zone Liquation ◽  
Weld Heat

scholarly journals Influence of Hot Isostatic Pressing on the Hot Ductility of Cast Alloy 718: The Effect of Niobium and Minor Elements on the Liquation Mechanism

2020 ◽  
Vol 51 (12) ◽  
pp. 6248-6257
Author(s):  
Sukhdeep Singh ◽  
Fabian Hanning ◽  
Joel Andersson
Keyword(s):  
Cast Alloy ◽  
Hot Isostatic Pressing ◽  
Solute Segregation ◽  
Alloy 718 ◽  
Isostatic Pressing ◽  
Minor Elements ◽  
Constitutional Liquation ◽  
Cast Alloy 718 ◽  
Zone Liquation ◽  
Recovery Temperature

AbstractThe influence of two hot isostatic pressing (HIP) treatments on liquation behavior was investigated and compared with regard to the extent of heat-affected zone liquation cracking in cast Alloy 718. The extent of liquation was seen to increase after HIP treatment at 1190 °C due to solute changes caused by the homogenization of Nb, which contributed to extensive grain boundary melting. The HIP treatment at 1120 °C exhibited lower liquation with contributions from particle liquation of the Laves phase and constitutional liquation of NbC carbides. This was also reflected in a lower ductility recovery temperature, with slower recovery for the former due to the extensive liquation. Interestingly, the nil ductility temperatures were both below the predicted equilibrium solidus of the alloy, which suggests that the ductility drop is related to liquation caused by solute segregation at the grain boundaries.

scholarly journals Characteristics of Heat-Affected Zone Cracking in Cast Alloy 718-A Study on Weldability of Cast Alloy 718 (Report 1).

1999 ◽  
Vol 17 (3) ◽  
pp. 456-465 ◽  
Author(s):  
Insu WOO ◽  
Kazutoshi NISHIMOTO ◽  
Katsuyuki TANAKA ◽  
Makoto SHIRAI
Keyword(s):  
Heat Affected Zone ◽  
Cast Alloy ◽  
Alloy 718 ◽  
Cast Alloy 718
Sign in / Sign up

Export Citation Format

Share Document