Precipitate shearing, fault energies, and solute segregation to planar faults in Ni-, CoNi-, and Co-base superalloys
YM Eggeler, KV Vamsi… - Annual Review of Materials …, 2021 - annualreviews.org
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 …
Low-density, high-temperature Co base superalloys
SK Makineni, MP Singh… - Annual Review of …, 2021 - annualreviews.org
Co base superalloys strengthened by coherent L12 ordered γ′ precipitate in a disordered
face-centered cubic γ matrix represent a new opportunity for high-temperature alloy …
face-centered cubic γ matrix represent a new opportunity for high-temperature alloy …
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 …
Understanding the bound triplet-pair state in singlet fission
Singlet fission is a photophysical process in which two triplet excitons are produced from
one singlet exciton. Understanding the details of this process, especially the properties of …
one singlet exciton. Understanding the details of this process, especially the properties of …
Understanding creep of a single-crystalline Co-Al-W-Ta superalloy by studying the deformation mechanism, segregation tendency and stacking fault energy
A systematic study of the compression creep properties of a single-crystalline Co-base
superalloy (Co-9Al-7.5 W-2Ta) was conducted at 950, 975 and 1000° C to reveal the …
superalloy (Co-9Al-7.5 W-2Ta) was conducted at 950, 975 and 1000° C to reveal the …
Accelerated discovery of oxidation resistant CoNi-base γ/γ'alloys with high L12 solvus and low density
A systematic and accelerated methodology for alloy design is demonstrated by combining
combinatorial synthesis, high-throughput oxide scale characterization, computational …
combinatorial synthesis, high-throughput oxide scale characterization, computational …
[HTML][HTML] Origin of the yield stress anomaly in L12 intermetallics unveiled with physically informed machine-learning potentials
The yield stress anomaly of L1 2 intermetallics such as Ni 3 Al, Ni 3 Ga, Co 3 (Al, W) is
controlled by the so-called Kear–Wilsdorf lock (KWL), of which the formation and unlocking …
controlled by the so-called Kear–Wilsdorf lock (KWL), of which the formation and unlocking …
A Co-rich chemically complex intermetallic alloy with extraordinary strength-ductility synergy
High-strength ordered intermetallic alloys are always sought-after in sophisticated structural
applications. However, their practical applications have long been hindered by the severe …
applications. However, their practical applications have long been hindered by the severe …
Atomic and electronic basis for solutes strengthened (010) anti-phase boundary of L12 Co3 (Al, TM): a comprehensive first-principles study
The crystallographic and electronic structures of (010) APB of L1 2 Co 3 Al 0.75 TM 0.25 are
studied by high-resolution transmission electron microscopy and first-principles calculations …
studied by high-resolution transmission electron microscopy and first-principles calculations …
Modeling APB energies in multicomponent Ni-base superalloys
KV Vamsi, S Karthikeyan - Intermetallics, 2021 - Elsevier
An environment dependent nearest neighbor bond (EDNNB) model was developed to
estimate the antiphase boundary (APB) energies in γ′ precipitates (L1 2 structure) in …
estimate the antiphase boundary (APB) energies in γ′ precipitates (L1 2 structure) in …