Phase-field simulation of coherent BCC/B2 microstructures in high entropy alloys

JL Li, Z Li, Q Wang, C Dong, PK Liaw - Acta Materialia, 2020 - Elsevier
This present work simulated the coherent BCC/B2 microstructures existing in body-centered-
cubic (BCC)-based Al-Ni-Co-Fe-Cr high entropy alloys (HEAs) in light of the phase-field …

κ-Carbide assisted nucleation of B2: A novel pathway to develop high specific strength steels

A Zargaran, TTT Trang, G Park, NJ Kim - Acta Materialia, 2021 - Elsevier
Controlling morphology of B2 phase as nano-sized particles that are homogenously
distributed within austenite matrix has been remained as a challenging task particularly for …

Review of γ'rafting behavior in nickel-based superalloys: Crystal plasticity and phase-field simulation

Z Yu, X Wang, F Yang, Z Yue, JCM Li - Crystals, 2020 - mdpi.com
Rafting is an important phenomenon of the microstructure evolution in nickel-based single
crystal superalloys at elevated temperature. Understanding the rafting mechanism and its …

Phase-field, dislocation based plasticity and damage coupled model: modelling and application to single crystal superalloys

R Wu, Y Zhang - International Journal of Plasticity, 2022 - Elsevier
In the present work, we propose a novel model coupling phase-field, dislocation density
based plasticity and damage. The dislocation density governing equations are constructed …

Crystal plasticity constitutive modeling of tensile, creep and cyclic deformation in single crystal Ni-based superalloys

S Chaudhary, PJ Guruprasad, A Patra - Mechanics of Materials, 2022 - Elsevier
A microstructure-sensitive crystal plasticity constitutive framework is proposed for simulating
the tensile, cyclic, and creep response of single crystal Ni-based superalloys. In this …

A microstructural rafting state-based constitutive model for single crystal Ni-based superalloys at elevated temperature

YS Fan, L Tan, XG Yang, DQ Shi, RZ Li, J Huang… - International Journal of …, 2022 - Elsevier
Single crystal (SC) Ni-based superalloys undergo microstructural degradations such as
rafting and coarsening due to the extremely harsh service environment, which consequently …

Multi-scale modelling of rafting behaviour under complex stress states for Ni3Al superalloys

RZ Li, B Xie, XG Yang, YS Fan, YT Sun… - International Journal of …, 2022 - Elsevier
Directional coarsening behaviour, also known as rafting, largely determines the mechanical
properties of Ni 3 Al superalloys. However, owing to a vague understanding of the micro …

γ′-Rafting mechanisms under complex mechanical stress state in Ni-based single crystalline superalloys

V Caccuri, J Cormier, R Desmorat - Materials & Design, 2017 - Elsevier
The morphological evolution of the γ′ precipitates has been studied in a second generation
nickel-based single crystal superalloy during isothermal creep straining at 1093° C under …

Generation mechanism and motion behavior of sliver defect in single crystal Ni-based superalloy

H Xia, Y Yang, Q Feng, Q Xu, H Dong, B Liu - Journal of Materials Science …, 2023 - Elsevier
Sliver is a common but easily neglected defect in single crystal Ni-based superalloy
castings. To date, there is still no unified viewpoint on its formation mechanism and …

A tensorial thermodynamic framework to account for the γ'rafting in nickel-based single crystal superalloys

R Desmorat, A Mattiello, J Cormier - International Journal of Plasticity, 2017 - Elsevier
A new model is developed in order to account for the effect of microstructural degradation (ie
precipitate-directional-coarsening) on the viscoplastic behavior of single crystal superalloys …