Environmental degradation of structural materials in liquid lead-and lead-bismuth eutectic-cooled reactors

X Gong, MP Short, T Auger… - Progress in materials …, 2022 - Elsevier
Liquid lead (Pb)-and lead–bismuth eutectic (LBE)-cooled fast neutron reactors (Gen-IV
LFRs) are one of the most technologically mature fission reactor technologies, due to their …

[HTML][HTML] Grain boundary segregation in Ni-base alloys: A combined atom probe tomography and first principles study

AS Ebner, S Jakob, H Clemens, R Pippan… - Acta materialia, 2021 - Elsevier
Grain boundary engineering (GBE) plays an important role in the design of new
polycrystalline materials with enhanced mechanical properties. This approach has been …

The segregation of transition metals to iron grain boundaries and their effects on cohesion

HL Mai, XY Cui, D Scheiber, L Romaner, SP Ringer - Acta materialia, 2022 - Elsevier
The segregation of transition metal elements to grain boundaries in steels plays a critical
role in determining their cohesion. Here, we investigate the segregation, co-segregation …

First-principles study on the corrosion resistance of iron oxide surface and grain boundary in austenitic steel to lead–bismuth eutectic

T Liu, B Zhang, H Yin, X He, M Liu, J Qiu, W Liu - Applied Surface Science, 2023 - Elsevier
In this paper, the corrosion properties of austenitic steel with and without protection of Fe 3 O
4 scale was investigated based on first-principles calculations. The results show that lead …

Impact of the segregation energy spectrum on the enthalpy and entropy of segregation

D Scheiber, L Romaner - Acta materialia, 2021 - Elsevier
Substantial disagreement exists for segregation energies between experimentally measured
and first principles calculated values. To resolve this standing issue, we computed …

[HTML][HTML] Segregation-induced grain-boundary precipitation during early stages of liquid-metal embrittlement of an advanced high-strength steel

Y Ikeda, HC Ni, A Chakraborty, H Ghassemi-Armaki… - Acta Materialia, 2023 - Elsevier
Liquid-metal embrittlement (LME) of galvanized (Zn-coated) advanced high-strength steels
is a long-known problem in materials science. Here we reveal the initial microstructural …

[HTML][HTML] First-principles calculation of twin boundary energy and strength/embrittlement in hexagonal close-packed titanium

J Hui, X Zhang, T Liu, W Liu, B Wang - Materials & Design, 2022 - Elsevier
We performed first-principles calculations to determine the effects of 14 metallic solutes on
twin boundary (TB) energy and strength/embrittlement in Ti alloys, with Ti {1 0 1¯ 2} and {1 0 …

Bond strength between TiN coating and microstructural constituents of a high speed steel determined by first principle calculations

M Gsellmann, D Scheiber, T Klünsner, J Zálešák… - Acta materialia, 2022 - Elsevier
The adhesion of protective hard coatings to the substrate is one of the most important
parameters that influence the performance of metal cutting tools. By a combination of high …

[HTML][HTML] Efficiency, accuracy, and transferability of machine learning potentials: Application to dislocations and cracks in iron

L Zhang, G Csányi, E van der Giessen, F Maresca - Acta Materialia, 2024 - Elsevier
Abstract Machine learning interatomic potentials (ML-IAPs) enable quantum-accurate,
classical molecular dynamics simulations of large systems, beyond reach of density …

Machine learning interatomic potential with DFT accuracy for general grain boundaries in α-Fe

K Ito, T Yokoi, K Hyodo, H Mori - npj Computational Materials, 2024 - nature.com
To advance the development of high-strength polycrystalline metallic materials towards
achieving carbon neutrality, it is essential to design materials in which the atomic level …