Results 121 to 130 of about 86,765,181 (295)

Understanding ductile-to-brittle transition of metallic glasses from shear transformation zone dilatation

open access: yes, 2015
A theoretical model that takes into account the free-volume aided cooperative shearing of shear transformation zones (STZs) is developed to quantitatively understand the ductile-to-brittle transition(DBT) of metallic glasses.
Jiang F   +5 more
core  

Self‐Assembly of Organic–Inorganic Copolymers Toward Bio‐Inspired Cementitious Composites

open access: yesAdvanced Science, EarlyView.
Organic–inorganic copolymerization of calcium silicate hydrate and thioctic acid produces a self‐organized nanocomposite inspired by the disordered collagen–mineral architecture of trabecular bone. The resulting material combines a compressive strength above 300 MPa with intrinsic physical reprocessibility, retaining over 80% of its strength and energy
Zonglin Xie   +8 more
wiley   +1 more source

Numerical Modeling of the Ductile-Brittle Transition

open access: yes, 1996
Numerical studies of the ductile-brittle transition are described that are based on incorporating physically based models of the competing fracture mechanisms into the material's constitutive relation.
A. Needleman, Needleman, A.
core   +1 more source

Surface Neuronal‐Like Structuring of High‐Strength CFRP for Enhanced Electromagnetic Interference Shielding

open access: yesAdvanced Science, EarlyView.
This study elucidates the microstructural evolution at the material interface of Ni‐plated plain‐weave carbon fiber fabric following vacuum heat treatment at 500°C–900°C under different current densities, as well as the mechanism underlying the synergistic enhancement of electromagnetic shielding and ductility.
Wei Cheng   +7 more
wiley   +1 more source

Adaptive Conductive Systems: Enabling Deformable Electronics Through Engineered Materials, Circuits, and Intelligent Systems

open access: yesAdvanced Science, EarlyView.
This review presents the research advances of adaptive conductive systems from the perspective of materials, circuits, systems, and applications. Deformable conductors consist of substrates/matrices and conductive materials, structural design of circuit interconnections, fabrication of circuit interconnections, as well as intelligent systems ...
Yufei Lu   +7 more
wiley   +1 more source

A New Ordered Transformation‐Induced Plasticity Enables Exceptional Strength and Ductility in a B2 Medium‐Entropy Alloy

open access: yesAdvanced Science, EarlyView.
A novel B2‐ordered Ti‐Zr‐V‐Al medium‐entropy intermetallic is developed through controlled metastability engineering, which activates an ordered TRIP effect via a new B2→D019‐α2 transformation with a distinctive {0001}α2//{110}B2, <11‐20>α2//<100>B2 orientation relationship. This alloy achieves an elongation of ∼7%, a strength of ∼1.1 GPa, and superior
Chaohua Li   +8 more
wiley   +1 more source

The influence of sliding velocity and temperature on the ductile-to-brittle transition in asperity-level wear: A molecular dynamics study

open access: yesFriction
During sliding contact, asperities may undergo either ductile smoothing or brittle fracture, producing debris. A critical junction scale, d∗, governed by material properties, dictates this transition.
Sacha Zenon Wattel   +1 more
doaj   +1 more source

Brittle to ductile transition during indentation of ice

open access: yesCanadian Journal of Civil Engineering, 1991
The brittle to ductile transition in the deformation behaviour of ice is considered for indentation by a flat, rigid indentor under fully elastic plane strain or plane stress conditions. It is assumed that failure occurs when a crack initiated near an edge of the indentor is propagated immediately by the maximum shear stress at the site. Consideration
openaire   +3 more sources

High‐Performance Piezoresistive Sensors via Pd/Sn‐Free Graphene‐Catalyzed Metallization of Thermally Repairable Microfiber Scaffolds

open access: yesAdvanced Science, EarlyView.
The multilayer fiber‐based PGC sensor, fabricated via graphene‐mediated electroless copper deposition, demonstrates high sensitivity, mechanical durability, and fast response speed. Additionally, it features low‐temperature thermal assisted recovery and thermal resistance, providing a promising platform for wearable electronic devices and IoT ...
ByungJun Kim   +5 more
wiley   +1 more source

Low Temperature Impact Toughness of Steel S355NL for Wind Power Tower Flange

open access: yesTeshugang, 2015
The tangential and axial impact toughness of steel S355NL for wind power tower flange (/% : 0.14C, 0.22Si, 1.35Mn, 0.010P, 0.002S, 0.06Cr, 0.01Mo, 0.l0Ni, 0.03Cu, 0.40Ceq) at -20~-80℃ has been tested and analyzed.
戈文英
doaj  

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