Precipitate shearing, fault energies, and solute segregation to planar faults in Ni-, CoNi-, and Co-base superalloys
The mechanical properties of superalloys are strongly governed by the resistance to
shearing of ordered precipitates by dislocations. In the operating environments of …
shearing of ordered precipitates by dislocations. In the operating environments of …
Effect of Co on creep and stress rupture properties of nickel-based superalloys-A review
R Su, D Hao, P He, D Wu, Q Wang, H Dong… - Journal of Alloys and …, 2023 - Elsevier
Nickel-based superalloys are widely used in aircraft engines and land-based gas turbines
due to their high yield strength and good creep resistance. Co in nickel-based superalloys …
due to their high yield strength and good creep resistance. Co in nickel-based superalloys …
Stacking fault energy in concentrated alloys
We revisit the meaning of stacking fault energy (SFE) and the assumptions of equilibrium
dissociation of lattice dislocations in concentrated alloys. SFE is a unique value in pure …
dissociation of lattice dislocations in concentrated alloys. SFE is a unique value in pure …
On the faulting and twinning mediated strengthening and plasticity in a γʹ strengthened CoNi-based superalloy at room temperature
Microscopic defects and their mutual interactions are fundamentally important in deciding
the load carrying capacity of structural materials. In this context, the present work reports an …
the load carrying capacity of structural materials. In this context, the present work reports an …
Effect of stacking fault segregation and local phase transformations on creep strength in Ni-base superalloys
In this study, two similar, commercial polycrystalline Ni-based disk superalloys (LSHR and
ME3) were creep tested at 760° C and 552 MPa to approximately 0.3% plastic strain. LSHR …
ME3) were creep tested at 760° C and 552 MPa to approximately 0.3% plastic strain. LSHR …
Elemental partitions and deformation mechanisms of L12-type multicomponent intermetallics
Multicomponent high-entropy alloys (HEAs) with compositionally disordered elemental
arrangement have attracted extensive attention because of their excellent mechanical …
arrangement have attracted extensive attention because of their excellent mechanical …
Defect energy calculations of nickel, copper and aluminium (and their alloys): molecular dynamics approach
Stacking faults are defined as regions present in the crystal where the normal sequence of
stacking is disturbed. This takes place around a localized area. These defects come under …
stacking is disturbed. This takes place around a localized area. These defects come under …
[HTML][HTML] Nucleation of superlattice intrinsic stacking faults via cross-slip in nickel-based superalloys
FD León-Cázares, R Schlütter, F Monni, MC Hardy… - Acta Materialia, 2022 - Elsevier
Superlattice intrinsic stacking faults (SISF) are the main culprit for the low temperature creep
deformation of modern nickel-based superalloys used in jet engines. While these faults were …
deformation of modern nickel-based superalloys used in jet engines. While these faults were …
An exceptionally strong, ductile and impurity-tolerant austenitic stainless steel prepared by laser additive manufacturing
Y Chen, H Zhu, P Zhang, Z Wang, M Wang, G Sha… - Acta Materialia, 2023 - Elsevier
The effective strategy for structural steel with excellent tolerance of impurities is to increase
solidification rate to prevent the formation of segregation and intermetallic during fabrication …
solidification rate to prevent the formation of segregation and intermetallic during fabrication …
Atomic structure and elemental segregation behavior of creep defects in a Co-Al-W-based single crystal superalloys under high temperature and low stress
With the aim of understanding the effect of creep defects in the γ′ phase on the creep
resistance, the atomic structure and elemental segregation behavior of stacking faults (SFs) …
resistance, the atomic structure and elemental segregation behavior of stacking faults (SFs) …