Multiscale discrete dislocation dynamics study of gradient nano-grained materials

S Lu, J Zhao, M Huang, Z Li, G Kang… - International Journal of …, 2022 - Elsevier
Gradient nano-grained (GNG) metals have shown a better strength-ductility combination
compared to their homogeneous counterparts. In this paper, the mechanical properties and …

Effect of residual stress in gradient-grained metals: Dislocation dynamics simulations

S Lu, N Ao, Q Kan, S Wu, G Kang, X Zhang - International Journal of …, 2023 - Elsevier
A three-dimensional discrete dislocation dynamics (DDD) method was used to investigate
the effect of residual stress on the stress-strain response of gradient nano-grained (GNG) …

Dispersed strain bands promote the ductility of gradient nano-grained material: a strain gradient constitutive modeling considering damage effect

J Zhao, B Liu, Y Wang, Y Liang, J Li, X Zhang - Mechanics of Materials, 2023 - Elsevier
Gradient nano-grained (GNG) metals have achieved superior strength-ductility synergy than
their homogeneous counterparts. The high strength is usually attributed to the grain size …

Deformation mechanisms based constitutive modelling and strength-ductility mapping of gradient nano-grained materials

J Zhao, Q Kan, L Zhou, G Kang, H Fan… - Materials Science and …, 2019 - Elsevier
Gradient nano-grained (GNG) materials have shown synergetic high strength and ductility
due to their unique gradient microstructure, where the grain size changes from tens of …

Dislocation mechanism based size-dependent crystal plasticity modeling and simulation of gradient nano-grained copper

X Lu, X Zhang, M Shi, F Roters, G Kang… - international Journal of …, 2019 - Elsevier
Overcoming the trade-off between strength and ductility in metallic materials is a grand
challenge. Recently, materials with a gradient nano-grained (GNG) surface layer adhering to …

[HTML][HTML] Atomistic simulations of plasticity heterogeneity in gradient nano-grained FCC metals

L Xu, Z Huang, Q Shen, F Chen - Materials & Design, 2022 - Elsevier
Gradient nano-grained (GNG) metals are an emerging class of heterogeneous structured
materials with extraordinary mechanistic performances and unnatural plasticity mechanisms …

Geometrically necessary dislocations and related kinematic hardening in gradient grained materials: A nonlocal crystal plasticity study

X Zhang, J Zhao, G Kang, M Zaiser - International Journal of Plasticity, 2023 - Elsevier
Gradient grained metals whose microstructure is characterized by a spatially graded grain
size distribution show a better strength-ductility combination than their homogeneous …

Multiple mechanism based constitutive modeling of gradient nanograined material

J Zhao, X Lu, F Yuan, Q Kan, S Qu, G Kang… - International Journal of …, 2020 - Elsevier
Gradient nano-grained (GNG) materials, inside which grain size increases gradually from
nano-scale in the surface to micro-scale in the substrate, have shown synergetic strength …

Grain rotations during uniaxial deformation of gradient nano-grained metals using crystal plasticity finite element simulations

Z Li, F Yang - Extreme Mechanics Letters, 2017 - Elsevier
Gradient nano-grained (GNG) metals have great application potential due to its outstanding
performance in both strength and ductility. In this paper, we investigate the uniaxial …

The characterization of plastic behavior and mechanical properties in the gradient nanostructured copper

WA Siswanto, RM Romero-Parra… - Proceedings of the …, 2023 - journals.sagepub.com
Due to their individual plastic deformation behavior and mechanistic performances, gradient
nano-grained (GNG) metals have been identified as promising materials for application in …