Mechanical and fatigue performance of γ-γ′ Ni-base superalloys are strongly affected by the antiphase boundary energy (APBE) of the γ′ precipitates which, in turn, is dictated by …
OI Gorbatov, IL Lomaev, YN Gornostyrev, AV Ruban… - Physical Review B, 2016 - APS
The effect of composition on the antiphase boundary (APB) energy of Ni-based L 1 2- ordered alloys is investigated by ab initio calculations employing the coherent potential …
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 …
CX Dang, P Zhang, J Li, ZH Gao, B Li, XF Gong… - Materials …, 2020 - Elsevier
After just yielding at room temperature, the deformation mechanisms in the Ni-base superalloys René N5, CMSX-4, PWA 1483, and CM247LC are investigated by transmission …
JM Bai, HP Zhang, JT Liu, MD Zhang, CS Liu… - Materials Science and …, 2022 - Elsevier
To further develop Ni-based powder metallurgy (PM) superalloys for aero-engines, it is critical to understand their deformation mechanisms at various service temperatures. For …
S Liu, C Wang, P Yan, T Yu - Materials Science and Engineering: A, 2022 - Elsevier
The influence of refractory additions on tensile deformation behavior has been studied at an intermediate temperature (760° C) using scanning and transmission electron microscopy …
NC Eurich, PD Bristowe - Scripta Materialia, 2015 - Elsevier
First principles calculations are used to investigate the segregation behaviour of Co, Cr, Re, Mo and W to intrinsic and extrinsic stacking faults in γ′-Ni 3 Al. It is shown that the change …
AMZ Tan, C Woodward, DR Trinkle - Physical Review Materials, 2019 - APS
Nickel-based superalloys are widely used in applications requiring high strength and creep and fatigue resistance at elevated temperatures. Such structural properties are controlled by …
To gain a deeper insight into the anomalous yield behavior of Ni 3 Al, it is essential to obtain temperature-dependent formation Gibbs energies of the relevant planar defects. Here, the …