Results 111 to 120 of about 10,227 (256)

Insights Into Paint‐Bake Toughening of Resistance Spot Welds of a 2.0 GPa Warm‐Stamped Medium‐Mn Steel

open access: yessteel research international, EarlyView.
Paint baking of resistance spot welded joints of 2.0 GPa warm‐stamped medium‐Mn steel activates low‐temperature tempering, forming fine cementite in the fusion zone and enhancing toughness. Crack propagation resistance increases, shifting the failure mode from partial interfacial to complete pullout, with peak load and energy absorption rising ...
Sunusi Marwana Manladan   +8 more
wiley   +1 more source

Crash Behavior of DP800–DP1000 Advanced High‐Strength Steel’s Dissimilar Resistance Spot Welded Joints Under Quasi‐static and High Strain Rates

open access: yessteel research international, EarlyView.
The high‐strain‐rate behavior of resistance spot‐welded DP800–DP1000 joints is investigated. Results show that microstructural gradients across BM–HAZ–FZ govern hardness, strain rate sensitivity, and failure modes. While strength increases with strain rate, energy absorption is controlled by ductility, with DP800–DP800 joints showing superior ...
Pankaj Shrivastava, Velaphi Msomi
wiley   +1 more source

Effect of Light Attenuation through Lithium Disilicate on Polymerization and Microhardness of Dual Cure Resin Cements

open access: yes, 2023
Objectives: This in vitro study aimed to evaluate the effect of ceramic thickness, shade, and light-curing duration and cement type on the degree of conversion and microhardness of dual cured resin cements (DCRC). Methods: Lithium disilicate reinforced
Rissanen, Tiina
core  

Influence of Surface Roughness and Temperature on Niobium Cathodic Cage Duplex Treatment Applied to VP20TS Steel

open access: yessteel research international, EarlyView.
Niobium cathodic cage duplex treatment is applied to VP20TS steel to evaluate the influence of surface roughness and temperature on coating performance. Results show that higher temperatures promote thicker nitride layers and increased microhardness, while finer surface preparation enhances adhesion and wear resistance, revealing optimal conditions for
Alan Bruno Costa Cardoso   +6 more
wiley   +1 more source

THE EFFECT OF EXPLOSION WELDING ENERGY ON THE MICROHARDNESS DISTRIBUTION IN THE LAYERS OF THE AMG2 - VT1 COMPOSITE MATERIAL AFTER ROLLING

open access: yesIZVESTIA VOLGOGRAD STATE TECHNICAL UNIVERSITY
The distribution of microhardness in a layered composite material AMg2-VT1 obtained by explosion welding at various energy values of W2 and subsequent rolling has been studied. It is established that the microhardness of the layers decreases with distance from the axial suture zone.
L.M. GUREVICH   +2 more
openaire   +1 more source

Recent progress on the development of hydrogel‐based microneedles for transdermal drug delivery

open access: yesVIEW, EarlyView.
This study provides a comprehensive and up‐to‐date analysis of recent progress in HMN technology, covering fundamental transdermal delivery mechanisms and design principles, biomaterials used in HMN fabrication, drug loading and release strategies, and emerging therapeutic applications.
Mohammad Muhtasim Ittisaf   +5 more
wiley   +1 more source

Bimodal distribution of mechanical properties on plasma sprayed nanostructured partially stabilized zirconia

open access: yes, 2002
The mechanical behavior of nanostructured partially stabilized zirconia (PSZ) coatings was evaluated via Knoop microhardness. The distribution of the microhardness values of the feedstock particles and coatings under a 10 g load were analyzed via Weibull
Lima, R. S., Berndt, C. C., Kucuk, A.
core   +1 more source

Surface Micro‐Discharge Plasma for Multiple Teeth Bleaching: Efficacy, Mechanism and Safety

open access: yesHigh Voltage, EarlyView.
ABSTRACT Hydrogen peroxide (H2O2) is the commonly‐used bleaching chemical in clinical practice, but its excessive concentrations can cause tooth damage. Atmospheric pressure cold plasma is considered a promising new technique for tooth bleaching. Surface micro‐discharge (SMD) devices can generate large‐scale plasma, which holds potential for treating ...
Ruike Chen   +7 more
wiley   +1 more source

Surface Physical and Mechanical Properties of Short Fibre Reinforced Composite Resins in Direct Restorative Dentistry: A Systematic Review

open access: yesAustralian Dental Journal, EarlyView.
ABSTRACT Background Short Fibre Reinforced Composite resins may be used to restore odontogenic tissues and have enhanced physical and mechanical properties compared with conventional resins. However, their surface characteristics remain a concern, and this has limited their use as direct dental restorative materials.
Murray Macpherson   +2 more
wiley   +1 more source

MICROSTRUCTURE EVOLUTION OF 20CR STEEL SPIDER DURING COLD FORGING USING CELLULAR AUTOMATON METHOD

open access: yesActa Metallurgica Slovaca, 2018
The microstructure evolution of 20Cr steel spider in the cold forging process was simulated and analyzed by the CA method, and verified by the experimental results.
Kun Xia Wei   +5 more
doaj  

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