Effect of heat treatment on the high temperature fatigue life of single crystalline nickel base superalloy additively manufactured by means of selective electron beam melting

2019 ◽  
Vol 168 ◽  
pp. 124-128 ◽  
Author(s):  
Carla Meid ◽  
Anne Dennstedt ◽  
Markus Ramsperger ◽  
Julian Pistor ◽  
Benjamin Ruttert ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Electron Beam ◽  
High Temperature ◽  
Fatigue Life ◽  
Electron Beam Melting ◽  
Nickel Base Superalloy ◽  
High Temperature Fatigue ◽  
Selective Electron Beam Melting ◽  
Nickel Base ◽  
Base Superalloy

Solution Heat Treatment of the Single Crystal Nickel-Base Superalloy CMSX-4 Fabricated by Selective Electron Beam Melting

2015 ◽  
Vol 17 (10) ◽  
pp. 1486-1493 ◽  
Author(s):  
Markus Ramsperger ◽  
Laís Mújica Roncery ◽  
Inmaculada Lopez-Galilea ◽  
Robert F. Singer ◽  
Werner Theisen ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Electron Beam ◽  
Single Crystal ◽  
Electron Beam Melting ◽  
Solution Heat Treatment ◽  
Nickel Base Superalloy ◽  
Selective Electron Beam Melting ◽  
Nickel Base ◽  
Base Superalloy

Effect of Pre-Weld Heat Treatment Temperatures on TIG Welded Microstructures on Nickel Base Superalloy, GTD-111

2015 ◽  
Vol 658 ◽  
pp. 14-18
Author(s):  
Tanaporn Rojhirunsakool ◽  
Duangkwan Thongpian ◽  
Nutthita Chuankrerkkul ◽  
Panyawat Wangyao
Keyword(s):  
Heat Treatment ◽  
High Temperature ◽  
Heat Treatment Temperature ◽  
Treatment Temperature ◽  
Tig Welding ◽  
Nickel Base Superalloy ◽  
Nickel Base ◽  
Base Superalloy ◽  
Weld Heat

Nickel-base superalloys have been used as high temperature materials in land-base gas turbine application. When subjected to long term, high temperature service, large crack propagation was observed. Typical refurbishment method of these turbines is carried out by using TIG welding followed by post-weld standard heat treatment. However, new crack initiation is found in the heat-affected zone after TIG welding. Pre-weld heat treatment has been discovered to improves final γ + γ’ microstructure. This study focuses on the effect of pre-weld heat treatment temperature on final γ + γ’ microstructure. Seven different conditions of pre-weld heat treatment temperature were investigated. Scanning electron microscopy studies were carried out after pre-weld and post-weld heat treatments to compare the γ + γ’ microstructure and capture microcracks. The best pre-weld heat treatment temperature produces uniform distribution of finely dispersed γ’ precipitates in the γ matrix without post-weld crack.

scholarly journals On the formation of microstructural gradients in a nickel-base superalloy during electron beam melting

2018 ◽  
Vol 160 ◽  
pp. 251-261 ◽  
Author(s):  
Dunyong Deng ◽  
Ru Lin Peng ◽  
Hans Söderberg ◽  
Johan Moverare
Keyword(s):  
Electron Beam ◽  
Electron Beam Melting ◽  
Nickel Base Superalloy ◽  
Nickel Base ◽  
Base Superalloy
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