Understanding and design of metallic alloys guided by phase-field simulations

Y Zhao - npj Computational Materials, 2023 - nature.com
Phase-field method (PFM) has become a mainstream computational method for predicting
the evolution of nano and mesoscopic microstructures and properties during materials …

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 …

Coherency loss marking the onset of degradation in high temperature creep of superalloys: phase-field simulation coupled to strain gradient crystal plasticity

MA Ali, O Shchyglo, M Stricker, I Steinbach - Computational Materials …, 2023 - Elsevier
A dislocation density based crystal plasticity—phase-field model is applied to investigate
directional coarsening during creep in CMSX-4 Ni-based superalloys in the high …

45-degree rafting in Ni-based superalloys: A combined phase-field and strain gradient crystal plasticity study

MA Ali, W Amin, O Shchyglo, I Steinbach - International Journal of Plasticity, 2020 - Elsevier
Abstract 45° rafting of Ni-based superalloys has been investigated with the help of creep test
simulations applying a strain gradient crystal plasticity model coupled to the multi-phase …

[HTML][HTML] Quantitative mapping of service process-microstructural degradation-property deterioration for a Ni-based superalloy based on chord length distribution …

YS Fan, XG Yang, DQ Shi, L Tan, WQ Huang - Materials & Design, 2021 - Elsevier
Directionally solidified (DS) and single crystal (SC) Ni-based superalloys inevitably
underwent microstructural degradation induced by the harsh operating environment. For the …

Role of coherency loss on rafting behavior of Ni-based superalloys

MA Ali, JV Görler, I Steinbach - Computational Materials Science, 2020 - Elsevier
The role of coherency loss on rafting of superalloys under high temperature low stress creep
conditions is investigated by phase-field crystal plasticity simulations. It is demonstrated that …

Plasticity assisted redistribution of solutes leading to topological inversion during creep of superalloys

S Antonov, Y Zheng, JM Sosa, HL Fraser, J Cormier… - Scripta Materialia, 2020 - Elsevier
We have studied the large-scale plasticity assisted topological inversion in a Ni-based
superalloy after creep at 850° C. Multi-scale characterization from the micro-to the near …

[HTML][HTML] Design of variable withdrawal rate for superalloy single-crystal blade fabrication

N Ren, J Li, B Wang, L Zeng, M Xia, J Li - Materials & Design, 2021 - Elsevier
Stray grains bring great challenges to the production of superalloy single-crystal blades
using the Bridgman method. The height difference between the liquidus isotherms in the …

Microstructure evolution mechanisms in nickel-based single crystal superalloys under multiaxial stress state

Y Zhang, Z Wen, H Pei, Y Zhao, Z Li, Z Yue - Journal of Alloys and …, 2019 - Elsevier
Thin-walled plate specimens with square and triangular penetration pattern close-packed
film cooling holes are used to study the evolution of the γ/γ′-microstructure of nickel-based …