Results 51 to 60 of about 175,593 (294)

A Novel Approach to Estimate the Transition Temperature via Dynamic Nanoindentation

open access: yesAdvanced Engineering Materials, EarlyView.
A new dynamic nanoindentation‐based method was developed that uses the stiffness ratio as an indicator of the elastic–plastic deformation contributions at different temperatures. The approach successfully identified transition temperatures in ferritic steel and distinguished them from continuously ductile austenitic steel.
Stefan Zeiler   +4 more
wiley   +1 more source

Surface Morphology, Relative Density, Microhardness and Microstructure of Tungsten Fabricated by Laser Powder Bed Fusion

open access: yesMetals
This study investigates the effects of laser power and scanning rate on the surface morphology, relative density, microhardness and microstructure of pure tungsten fabricated by laser powder bed fusion (LPBF). Increasing the laser power or decreasing the
Fang Wu   +4 more
doaj   +1 more source

Thermodynamic Properties and Equation of State for Tungsten

open access: yesCrystals, 2023
A high-temperature equation of state for tungsten was constructed in this study using experimental data on its thermodynamic properties, thermal expansion, compressibility, and bulk compression modulus. The totality of experimental data were optimized by
Nikolay V. Kozyrev, Vladimir V. Gordeev
doaj   +1 more source

Microstructural, Mechanical, and Textural Evolution of Dissimilar Combination of Laser‐Welded Maraging Steel and 4340 Steel

open access: yesAdvanced Engineering Materials, EarlyView.
The present work reports the microstructural, mechanical, and texture evolution of a dissimilar combination laser‐welded maraging steel with 4340 steel. This is important for aerospace applications. The demand for dissimilar welding is growing rapidly with the requirement of efficient and durable joints.
Bharat Behl   +3 more
wiley   +1 more source

Analysis of Shielding Performance of Radiation-Shielding Materials According to Particle Size and Clustering Effects

open access: yesApplied Sciences, 2021
In the field of medical radiation shielding, there is an extensive body of research on process technologies for ecofriendly shielding materials that could replace lead.
Seon-Chil Kim
doaj   +1 more source

All‐in‐One Analog AI Hardware: On‐Chip Training and Inference with Conductive‐Metal‐Oxide/HfOx ReRAM Devices

open access: yesAdvanced Functional Materials, EarlyView.
An all‐in‐one analog AI accelerator is presented, enabling on‐chip training, weight retention, and long‐term inference acceleration. It leverages a BEOL‐integrated CMO/HfOx ReRAM array with low‐voltage operation (<1.5 V), multi‐bit capability over 32 states, low programming noise (10 nS), and near‐ideal weight transfer.
Donato Francesco Falcone   +11 more
wiley   +1 more source

CURRENT STATE OF TUNGSTEN INDUSTRY IN RUSSIA

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2019
The relevance of the work is caused by the need to study the problems of the Russian tungsten industry. The aim of this research is to study the dynamics of commodity flows (production, import, export, consumption) of tungsten products (tungsten ...
Vitaly Yu. Khatkov, Grigory Yu. Boyarko
doaj   +1 more source

Engineering Borophene Band Structure Through Thickness. [PDF]

open access: yesAdv Sci (Weinh)
Borophene grown on W(110) shows a thickness‐dependent evolution of its structural and electronic properties. Surface microscopy, diffraction, XPS, and ARPES reveal distinct monolayer and bilayer phases. The formation of the second layer is accompanied by structural reconstruction, changes in chemical properties, and new ARPES features, demonstrating ...
Jugovac M   +4 more
europepmc   +2 more sources

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

open access: yesAdvanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero   +12 more
wiley   +1 more source

Interaction between nitrogen plasma and tungsten

open access: yesNuclear Materials and Energy, 2017
The set of experiments using a glow discharge of direct current in the mixture of working gases (nitrogen-hydrogen) was carried out in order to choose optimal method of tungsten nitriding.
T. Tulenbergenov   +8 more
doaj   +1 more source

Home - About - Disclaimer - Privacy