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 …

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 …

Gradient plasticity in gradient nano-grained metals

Z Zeng, X Li, D Xu, L Lu, H Gao, T Zhu - Extreme Mechanics Letters, 2016 - Elsevier
Gradient nano-grained (GNG) metals are a unique class of materials with spatial gradients
in grain size, typically from the surface to the bulk. Here the gradient mechanical behavior in …

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 …

[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 …

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 …

Mechanical properties and optimal grain size distribution profile of gradient grained nickel

Y Lin, J Pan, HF Zhou, HJ Gao, Y Li - Acta Materialia, 2018 - Elsevier
Gradient structured (GS) materials are ubiquitous in biological systems and now
increasingly adopted in engineering systems to achieve desirable combinations of …

Effects of grain size, texture and grain growth capacity gradients on the deformation mechanisms and mechanical properties of gradient nanostructured nickel

R Yuan - Acta Mechanica, 2023 - Springer
Developing a complete understanding of the structure–property relationship of gradient
nanostructured metals is crucial to the technological advancement that will overcome the …

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 …

[HTML][HTML] Modelling the shear banding in gradient nano-grained metals

T Chen, J Li - Nanomaterials, 2021 - mdpi.com
Extensive experiments have shown that gradient nano-grained metals have outstanding
synergy of strength and ductility. However, the deformation mechanisms of gradient metals …