A general micromechanics-based model for precipitate strengthening and fracture toughness in polycrystal high entropy alloys

Y Wang, F Tan, Y Chen, H Feng, J Li, PK Liaw… - International Journal of …, 2024 - Elsevier
High-entropy alloys (HEAs) usually exhibit exceptional mechanical properties attributed to
one of important core effects for serious lattice strain to impede dislocation motion compared …

Theoretical modeling of toughening mechanisms in the CrMnFeCoNi high-entropy alloy at room temperature

X Li, AG Sheinerman, H Yang, Z Zhu - International Journal of Plasticity, 2022 - Elsevier
While multiple plastic deformation mechanisms at room temperature in the CrMnFeCoNi
high-entropy alloy (HEA) have been revealed experimentally, the qualitative and/or …

Effects of grain boundary misorientation angle on the mechanical behavior of Al bicrystals

W Velilla-Díaz, HR Zambrano - Nanomaterials, 2023 - mdpi.com
This research article explores the effect of grain boundary (GB) misorientation on the
mechanical behavior of aluminum (Al) bicrystals by means of molecular dynamics (MD) …

Effects of chemical short-range order and lattice distortion on crack-tip behavior of medium-entropy alloy by atomistic simulations

X Zhu, F Cao, L Dai, Y Chen - Metals, 2024 - mdpi.com
It is well demonstrated that the complex chemical fluctuations on high/medium-entropy
alloys (H/MEAs) play critical roles in their deformation process, but there are few reports …

Effect of fatigue-mediated secondary microcrack on crack resistance of twinned materials

W Li, X Li, H Feng, C Jiang - International Journal of Solids and Structures, 2022 - Elsevier
Accurately assessing fatigue crack growth resistance of structural materials is critical for
service safety. We developed a theoretical model to describe the fatigue crack growth rate …

Molecular dynamics simulation and theoretical modeling of free surface effect on nanocrack initiation induced by grain boundary sliding in nanocrystalline materials

X Li, W Ma - Materials Letters, 2021 - Elsevier
Free surfaces have significant effects on plastic deformation and fracture of nanocrystalline
materials (NMs), especially for nano-or micro-scale specimens. To reveal the influence …

Microscopic and macroscopic analyses of the interaction mechanism between defect growth and dislocation emission in single‐crystal aluminum

X Li, S Peng, X Zhang, X Jiang… - Fatigue & Fracture of …, 2021 - Wiley Online Library
The study on the interaction between defects and dislocation emission is of significance to
predict the behaviors of fracture and plastic deformation in crystalline metals; however, the …

A new idea of modeling shear band in metallic glass based on the concept of distributed dislocation

X Li, R Qu, W Rao, X Jiang - Journal of Non-crystalline Solids, 2022 - Elsevier
Shear bands are closely linked with the plasticity and fracture behaviors of metallic glasses
(MGs). This work proposes a new idea to predict shear bands by continuously distributed …

Atomic scale analysis of cracking behavior at the triple junctions based on molecular dynamics simulations

X Zhang, P Li, Y Liu, M Zhang, F Yang - Engineering Fracture Mechanics, 2025 - Elsevier
Triple junctions play important role in the deformation and fracture of polycrystalline metals.
Due to the difference in the crystalline orientations of the composing grains, high stress …

High-cycle fatigue and fracture behavior of double-side friction stir welded 6082Al ultra-thick plates

C Yang, BB Wang, BH Yu, LH Wu, P Xue… - Engineering Fracture …, 2020 - Elsevier
For welded structures of precipitation-strengthened aluminum alloys, achieving sound joint
with good fatigue property is not an easy task, especially for thick plates. In the present work …