Effect of different processing technologies and heat treatments on the microstructure and creep behavior of GH4169 superalloy

Micromechanics based fatigue life prediction of a polycrystalline metal applying crystal plasticity

“…Similar to other superalloys, it contains the phases c, c 0 , c 00 and MC carbides. Its matrix phase is face-centered cubic (fcc) (Li et al, 2013). Its plastic deformation on the micro-scale can be described by slipping along the respective slip-systems of the lattice of individual grains.…”

“…The true grain structure of GH4169 is exhibited by a SEM image in Fig. 2 (Li et al, 2013), and the histogram of the grain area ratio within the material is shown in Fig. 3, in which the area ratio of grain area and the area average, a/a average , is taken from the SEM image.…”

Effects of initial aging time on processing map and microstructures of a nickel-based superalloy

“…However, due to the narrow forming temperature range, great deformation resistance and complex microstructures, the hot working parameters of nickel-based superalloy should be controlled in a precise domain. Therefore, investigating the effects of hot working parameters on the deformation behavior, hot workability and microstructural evolution are very important for the hot forming of superalloys [54][55][56][57][58][59][60][61][62][63][64][65][66][67][68][69]. Shore et al [54] studied the hot workability of the cast and wrought Incoloy 901 produced by electro-slag remelting, and found that the better workability of wrought material is associated with the easier dynamic recrystallization, compared to the cast material.…”

Effect of Cold Rolling and Heat Treatment on the Mechanical Properties of GH4169 Alloy Sheet at Room Temperature

“…However, when the temperature is >900˝C, the δ phase can also be precipitated directly from the matrix [7]. The δ phase existed in the GH4169 alloy plays important effects on the creep properties and microstructure's evolution [8,9]. It reduces the notch sensibility and controls the grain growth through precipitation on the grain boundaries [10][11][12].…”

“…For the blade forming, these two processes were both important to the final properties of blades. Especially the period of annealing at 980˝C, it not only determined the phase content, but also has a significant effect on the grain refinement [8,10,11]. Besides, the texture and its effect on the mechanical property of alloy were also needed to be paid attentions [15,16].…”