Effect of hot work on the properties of Waspaloy

Effect of Ta on the Solidification Behavior of Ni₃Al-Base Single-Crystal Superalloys

“…The mechanical properties of casting superalloys are mainly determined by the solidification condition in solidificaiton process. And in the process of developing casting superalloys, the researchers worldwide have conducted a series of research work on the solidification behavior of superalloys [4][5][6][7][8][9][10][11][12][13]. It is reported that Ta can dramticaly increase the properties of casting superalloys, such as high temeprature strength, oxidation and corrosion resistance [14].…”

“…So understanding the effect of refractory element Ta on the solidification behavior of Ni3Al-base single-crystal superalloys is of great importance to find out the precipitation regularity of the phases and to evaluate the castability of alloy. To date, there have been some studies on the solidification behavior of Ni-base single-crystal superalloys [4][5][6][7][8][9][10][11][12][13], but there have only been limited studies on the effect of Ta on the solidification behavior of Ni 3 Al-base single-crystal superalloys [18][19][20]. Thus, the objective of this study was to investigate the effect of Ta on the solidification behavior of the high refractory content Ni-base superalloys.…”

Constitutive Characteristic of Hot Deformation for Spray Formed Superalloy GH738

“…As a candidate material for long-time service applications in gas turbines and steam turbines, the nickel-based superalloy GH738 exhibits sufficiently high temperature creep, fatigue and oxidation resistance [4,5]. To optimize the deformation parameters and control the microstructural elements such as grain size, γ′ characteristics, carbides sizes, and distributions, a thorough study on elevated temperature deformation behavior and constitutive characteristic is essential and necessary.…”