Seventy years of Hall-Petch, ninety years of superplasticity and a generalized approach to the effect of grain size on flow stress

RB Figueiredo, M Kawasaki, TG Langdon - Progress in Materials Science, 2023 - Elsevier
The grain size, and therefore the grain boundary density, is known to play a major role in the
flow stress of metallic materials. A linear relationship to the inverse of the square root of the …

Texture evolution in high-pressure torsion processing

H Azzeddine, D Bradai, T Baudin… - Progress in Materials …, 2022 - Elsevier
Among the severe plastic deformation processing (SPD) of materials, high-pressure torsion
(HPT) is known to induce considerable amounts of plastic strain and crucial grain refinement …

[HTML][HTML] Deformation mechanisms in ultrafine-grained metals with an emphasis on the Hall–Petch relationship and strain rate sensitivity

RB Figueiredo, TG Langdon - Journal of Materials Research and …, 2021 - Elsevier
Ultrafine-grained materials display almost no strain hardening, an enhanced strain rate
sensitivity and grain boundary offsets during plastic deformation. It is expected that …

Multi-layer graphene/copper composites: Preparation using high-ratio differential speed rolling, microstructure and mechanical properties

WJ Kim, TJ Lee, SH Han - Carbon, 2014 - Elsevier
The possibility of using multi-layer graphene (MLG) particles as reinforcement for enhancing
the mechanical properties of Cu matrix composites was explored. The combination of ball …

[HTML][HTML] The fabrication of graphene-reinforced Al-based nanocomposites using high-pressure torsion

Y Huang, P Bazarnik, D Wan, D Luo, PHR Pereira… - Acta Materialia, 2019 - Elsevier
Metal matrix nanocomposites were fabricated by high-pressure torsion (HPT) using 5%
graphene nanoplates as a reinforcement contained within an Al matrix. Powders were mixed …

Effect of grain size on strength and strain rate sensitivity in metals

RB Figueiredo, TG Langdon - Journal of Materials Science, 2022 - Springer
The effect of the grain size on the mechanical properties of metallic materials has been a
topic of significant interest for researchers and industry. For many decades, a relationship …

Copper/carbon nanotube composites: Research trends and outlook

RM Sundaram, A Sekiguchi… - Royal Society …, 2018 - royalsocietypublishing.org
We present research progress made in developing copper/carbon nanotube composites
(Cu/CNT) to fulfil a growing demand for lighter copper substitutes with superior electrical …

Experimental study on tribological properties of Cu–Al2O3 nanocomposite hybridized by graphene nanoplatelets

AM Sadoun, A Fathy - Ceramics International, 2019 - Elsevier
Mechanical and tribological properties of Cu–Al 2 O 3 nanocomposite hybridized by silver
(Ag) coated graphene nanoplatelets (GNPs) were studied. Four different GNPs content, 0.3 …

Improving graphene distribution and mechanical properties of GNP/Al composites by cold drawing

J Li, X Zhang, L Geng - Materials & Design, 2018 - Elsevier
Dispersion of graphene in aluminum matrix has been a key factor that affects the
strengthening efficiency of graphene reinforced aluminum matrix composites. Here, GNP/Al …

Enhanced tensile properties and electrical conductivity of Cu-CNT nanocomposites processed via the combination of flake powder metallurgy and high pressure …

MR Akbarpour, HM Mirabad, S Alipour… - Materials Science and …, 2020 - Elsevier
Using flake powder metallurgy (FPM) technique, combined with high pressure torsion, super
high strength-ductile Cu-CNT nanocomposite with high electrical conductivity is developed …