Kinetics of interaction of impurity interstitials with dislocations revisited

J Svoboda, W Ecker, VI Razumovskiy, GA Zickler… - Progress in materials …, 2019 - Elsevier
Interactions of impurity interstitial atoms with dislocations may play an important role in
strengthening of structural materials as well as in other phenomena like hydrogen …

First-principles study of carbon segregation in bcc iron symmetrical tilt grain boundaries

J Wang, R Janisch, GKH Madsen, R Drautz - Acta Materialia, 2016 - Elsevier
Segregation of light elements can profoundly affect the energies and cohesive properties of
grain boundaries. First-principles calculations have been performed to determine the carbon …

First-principles study on the P-induced embrittlement and de-embrittling effect of B and C in ferritic steels

J Wang, M Enomoto, C Shang - Acta Materialia, 2021 - Elsevier
First-principles calculations of the Σ5 (310) grain boundary in Fe with B, C and P were
performed to reveal the mechanism of P-caused embrittlement and de-embrittling effect of B …

Atomic motifs govern the decoration of grain boundaries by interstitial solutes

X Zhou, A Ahmadian, B Gault, C Ophus… - Nature …, 2023 - nature.com
Grain boundaries, the two-dimensional defects between differently oriented crystals, tend to
preferentially attract solutes for segregation. Solute segregation has a significant effect on …

Correlation between stabilizing and strengthening effects due to grain boundary segregation in iron-based alloys: Theoretical models and first-principles calculations

HR Peng, WT Huo, W Zhang, Y Tang, S Zhang… - Acta Materialia, 2023 - Elsevier
Grain boundary (GB) segregation can drastically affect both the thermal stability and fracture
strength of nanocrystalline metals. Underlying physics of the correlation between the above …

First-principles approaches and models for crystal defect energetics in metallic alloys

YJ Hu - Computational Materials Science, 2023 - Elsevier
Many physical and mechanical properties of metallic alloys are sensitive to the formation
and migration of crystal defects such as vacancies, dislocations, stacking faults, and grain …

Aluminum depletion induced by co-segregation of carbon and boron in a bcc-iron grain boundary

A Ahmadian, D Scheiber, X Zhou, B Gault… - Nature …, 2021 - nature.com
The local variation of grain boundary atomic structure and chemistry caused by segregation
of impurities influences the macroscopic properties of polycrystalline materials. Here, the …

Hydrogen embrittlement of a carbon segregated Σ5 (310)[001] symmetrical tilt grain boundary in α-Fe

AM Tahir, R Janisch, A Hartmaier - Materials Science and Engineering: A, 2014 - Elsevier
The physical and mechanical properties of a Σ 5 (310)[001] symmetrical tilt grain boundary
(STGB) in body centred cubic (bcc) Fe are investigated by means of ab initio calculations …

Reversible Enhancement of Electronic Conduction Caused by Phase Transformation and Interfacial Segregation in an Entropy‐Stabilized Oxide

H Vahidi, AD Dupuy, BX Lam, J Cortez… - Advanced Functional …, 2024 - Wiley Online Library
Entropy‐stabilized oxide (ESO) research has primarily focused on discovering
unprecedented structures, chemistries, and properties in the single‐phase state. However …

Defect character at grain boundary facet junctions: Analysis of an asymmetric Σ= 5 grain boundary in Fe

DL Medlin, K Hattar, JA Zimmerman, F Abdeljawad… - Acta Materialia, 2017 - Elsevier
Grain boundaries often develop faceted morphologies in systems for which the interfacial
free energy depends on the boundary inclination. Although the mesoscale thermodynamic …