[HTML][HTML] Superior strength and ductility of 304 austenitic stainless steel with gradient dislocations

Q Pan, S Guo, F Cui, L Jing, L Lu - Nanomaterials, 2021 - mdpi.com
Materials with designed gradient nanograins exhibit unprecedented mechanical properties,
such as superior strength and ductility. In this study, a heterostructured 304 stainless steel …

[HTML][HTML] A grain-size-dependent structure evolution in gradient-structured (GS) Ni under tension

Y Lin, J Pan, Z Luo, Y Lu, K Lu, Y Li - Nano Materials Science, 2020 - Elsevier
This work outlines an experimental investigation of grain-size-dependent structure evolution
under tension in nickel with a grain size gradient. Two opposite and competing processes …

[HTML][HTML] Dislocation–grain boundary interactions: Recent advances on the underlying mechanisms studied via nanoindentation testing

F Javaid, H Pouriayevali, K Durst - Journal of Materials Research, 2021 - Springer
To comprehend the mechanical behavior of a polycrystalline material, an in-depth analysis
of individual grain boundary (GB) and dislocation interactions is of prime importance. In the …

Effect of volume fractions of gradient transition layer on mechanical behaviors of nanotwinned Cu

Z Cheng, T Wan, L Bu, L Lu - Acta Materialia, 2023 - Elsevier
Heterogeneous nanostructured (HNS) materials, such as gradient and laminated
nanostructured metals, possess superior mechanical properties with respect to their …

Cooperative grain boundary sliding and nanograin nucleation process in nanocrystalline, ultrafine-grained, and polycrystalline solids

SV Bobylev, NF Morozov, IA Ovid'Ko - Physical Review B, 2011 - APS
A special physical mode of plastic deformation in nanocrystalline, ultrafine-grained, and
polycrystalline solids is suggested and theoretically described. The mode represents the …

Modeling of dislocation–grain boundary interactions in a strain gradient crystal plasticity framework

İ Özdemir, T Yalçinkaya - Computational Mechanics, 2014 - Springer
This paper focuses on the continuum scale modeling of dislocation–grain boundary
interactions and enriches a particular strain gradient crystal plasticity formulation (convex …

Modelling the plastic deformation of nanostructured metals with bimodal grain size distribution

L Zhu, J Lu - International Journal of Plasticity, 2012 - Elsevier
Rendering a bimodal grain size distribution in nanostructured materials has been proved to
effectively achieve both higher strength and higher ductility, which is based on the ansatz …

Study of grain boundary orientation gradients through combined experiments and strain gradient crystal plasticity modeling

N Pai, A Prakash, I Samajdar, A Patra - International Journal of Plasticity, 2022 - Elsevier
A combined experimental and strain gradient crystal plasticity framework is presented for
studying the development of orientation and misorientation gradients at the grain …

Stress-driven migration of deformation-distorted grain boundaries in nanomaterials

SV Bobylev, IA Ovid'Ko - Acta Materialia, 2015 - Elsevier
Stress-driven migration of low-angle grain boundaries (LAGBs) having deformation-distorted
structures is theoretically described as a special mode of plastic deformation in …

Coordinated grain boundary deformation governed nanograin annihilation in shear cycling

Y Chen, Q Huang, Q Zhu, K Song, Y Zhou… - Journal of Materials …, 2021 - Elsevier
Grain growth and shrinkage are essential to the thermal and mechanical stability of
nanocrystalline metals, which are assumed to be governed by the coordinated deformation …