Heat affected zone liquation cracking in electron beam welded third generation nickel base superalloys

2008 ◽  
Vol 476 (1-2) ◽  
pp. 217-223 ◽  
Author(s):  
O.A. Ojo ◽  
Y.L. Wang ◽  
M.C. Chaturvedi
Keyword(s):  
Electron Beam ◽  
Heat Affected Zone ◽  
Third Generation ◽  
Liquation Cracking ◽  
Nickel Base Superalloys ◽  
Nickel Base ◽  
Zone Liquation

Characterization of heat affected zone liquation cracking in laser additive manufacturing of Inconel 718

2016 ◽  
Vol 90 ◽  
pp. 586-594 ◽  
Author(s):  
Yuan Chen ◽  
Ke Zhang ◽  
Jian Huang ◽  
Seyed Reza Elmi Hosseini ◽  
Zhuguo Li
Keyword(s):  
Additive Manufacturing ◽  
Heat Affected Zone ◽  
Inconel 718 ◽  
Laser Additive Manufacturing ◽  
Liquation Cracking ◽  
Zone Liquation

scholarly journals Heat-Affected-Zone Liquation Cracking in Welded Cast Haynes® 282®

Metals ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 29 ◽  
Author(s):  
Sukhdeep Singh ◽  
Joel Andersson
Keyword(s):  
Heat Treatment ◽  
Heat Affected Zone ◽  
Heat Treatments ◽  
Treatment Temperature ◽  
Mass Spectrometry Analysis ◽  
Liquation Cracking ◽  
Spectrometry Analysis ◽  
Thermomechanical Simulation ◽  
Common Understanding ◽  
Zone Liquation

Varestraint weldability testing and Gleeble thermomechanical simulation of the newly developed cast form of Haynes® 282® were performed to understand how heat-affected-zone (HAZ) liquation cracking is influenced by different preweld heat treatments. In contrast to common understanding, cracking susceptibility did not improve with a higher degree of homogenization achieved at a higher heat-treatment temperature. Heat treatments with a 4 h dwell time at 1120 °C and 1160 °C exhibited low cracking sensitivity, whereas by increasing the temperature to 1190 °C, the cracking was exacerbated. Nanosecond ion mass spectrometry analysis was done to characterize B segregation at grain boundaries that the 1190 °C heat treatment indicated to be liberated from the dissolution of C–B rich precipitates.

Dissimilar Electron Beam Welds of Nickel Base Alloy A625 with a 9% Cr-Steel for High Temperature Applications

2016 ◽  
Vol 879 ◽  
pp. 2100-2106
Author(s):  
Christopher Wiednig ◽  
Ernst Plesiutschnig ◽  
Stefan Mitsche ◽  
Coline Beal ◽  
Norbert Enzinger ◽  
...  
Keyword(s):  
Electron Beam ◽  
Heat Affected Zone ◽  
Arc Welding ◽  
Weld Seam ◽  
Electron Beam Welding ◽  
Base Alloy ◽  
Steel Plates ◽  
Metal Arc Welding ◽  
Ebsd Technique ◽  
Nickel Base

Welding of thick walled components with an electron beam has great potential due to the minimal heat input, high reproducibility and cost-efficiency. In the present work electron beam welding was used to weld 50mm thick plates of cast Ni-base alloy A625 to ferritic/martensitic 9% Cr steel plates. The welds were creep exposed at 625°C with stress levels ranging between 156 - 100MPa. Microstructure analysis of the weld-seam and the heat affected zone was carried out using metallography and scanning electron microscopy employing the EBSD technique to determine the location of the creep rupture. Creep fracture is located in the heat affected zone of the 9% Cr steel. Electron beam welded samples were compared to shield metal arc welded samples regarding welding and creep resistance. The performance and related microstructure properties of the electron beam welded specimen are more than competitive to conventional metal-arc-welding procedures.

scholarly journals Relations between Weld Heat-Affected Zone Cracking and Microstructure in Nickel-Base Superalloys

1978 ◽  
Vol 42 (4) ◽  
pp. 347-356 ◽  
Author(s):  
Yukio Nishiyama ◽  
Takao Uemura ◽  
Syuzo Nagai ◽  
Yoshihiro Morikawa
Keyword(s):  
Heat Affected Zone ◽  
Nickel Base Superalloys ◽  
Nickel Base ◽  
Weld Heat
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