Deformation twinning in body-centered cubic metals and alloys

X Li, Z Zhang, J Wang - Progress in Materials Science, 2023 - Elsevier
Deformation twinning is an important plastic carrier competing with the ordinary dislocation
slip in a broad class of crystalline solids, which critically controls the mechanical properties …

Solving oxygen embrittlement of refractory high-entropy alloy via grain boundary engineering

Z Wang, H Wu, Y Wu, H Huang, X Zhu, Y Zhang, H Zhu… - Materials Today, 2022 - Elsevier
Refractory high-entropy alloys (RHEAs), particularly NbMoTaW RHEAs, exhibit outstanding
softening resistance and thermal stability at ultra-high temperatures, but suffer from room …

Experimental molecular dynamics for individual atomic-scale plastic events in nanoscale crystals

S Zheng, S Shinzato, S Ogata, SX Mao - … of the Mechanics and Physics of …, 2022 - Elsevier
The experimental determination of critical stresses for yielding and plastic flow is of upmost
importance for the understanding of the atomic-scale mechanical behaviors of nanoscale …

Nanoscale ductile fracture and associated atomistic mechanisms in a body-centered cubic refractory metal

Y Lu, Y Chen, Y Zeng, Y Zhang, D Kong, X Li… - Nature …, 2023 - nature.com
Understanding the competing modes of brittle versus ductile fracture is critical for preventing
the failure of body-centered cubic (BCC) refractory metals. Despite decades of intensive …

Phase transformation induced transitional twin boundary in body-centered cubic metals

X Li, Q Zhao, Y Tian, Q Wang, J Fan, K Song, H Zhou… - Acta Materialia, 2023 - Elsevier
Body-centred cubic (BCC) metals possess unstable intrinsic stacking fault and high
resistance for deformation twinning, which often induce complex twinning dynamics that …

Orientation dependent plasticity of the refractory multi-principal element alloy MoNbTi investigated via micropillar compression

GH Balbus, SI Rao, ON Senkov, EJ Payton - Acta Materialia, 2024 - Elsevier
Refractory multi-principal element alloys (RMPEAs) are promising candidate materials for
use in high temperature structural applications and other extreme environments. Recent …

Orientation dependence of shock-induced change of habit plane for the 1/2< 111> dislocation loop and plasticity in tungsten

L Guo, L Wang, N Gao, Y Chen, B Liu, W Hu… - International Journal of …, 2022 - Elsevier
Tungsten (W) is a promising candidate material for future fusion reactors. The shock waves
generated under high-energy neutron radiation can lead to the formation of prismatic …

Twinning and antitwinning in body-centered cubic metals

R Gröger, J Holzer, T Kruml - Computational Materials Science, 2023 - Elsevier
Deformation twinning in body-centered cubic (BCC) metals occurs by shearing the crystal
along {112} planes parallel to< 111> directions. One of these directions (twinning shear) …

Mapping pure plastic strains against locally applied stress: Revealing toughening plasticity

TEJ Edwards, X Maeder, J Ast, L Berger, J Michler - Science Advances, 2022 - science.org
The deformation of all materials can be separated into elastic and plastic parts. Measuring
the purely plastic component is complex but crucial to fully characterize, understand, and …

Nanoindentation of tungsten: From interatomic potentials to dislocation plasticity mechanisms

FJ Domínguez-Gutiérrez, P Grigorev, A Naghdi… - Physical Review …, 2023 - APS
In this study, we employed molecular dynamics simulations, both traditional and machine
learned, to emulate spherical nanoindentation experiments of crystalline W matrices at …