Results 81 to 90 of about 934,400 (287)

Effects of low energy electron irradiation on formation of nitrogen-vacancy centers in single-crystal diamond

open access: yes, 2012
Exposure to beams of low energy electrons (2 to 30 keV) in a scanning electron microscope locally induces formation of NV-centers without thermal annealing in diamonds that have been implanted with nitrogen ions.
Collins A T   +11 more
core   +2 more sources

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

open access: yesAdvanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice   +2 more
wiley   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar   +2 more
wiley   +1 more source

Study on production of conventional grain oriented (CGO) silicon steel without normalizing process

open access: yesMetalurgija, 2020
The production of conventional grain oriented silicon steel without normalizing was studied by two-stage cold rolling process, and the orientation evolution was analyzed by optical microscopy (OM) and electron backscatter diffraction (EBSD) technique ...
Y. Y. Shao
doaj  

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

open access: yesAdvanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao   +3 more
wiley   +1 more source

Effects of annealing on interface microstructure and tensile fracture morphology of 42CrMo/Q235 cross wedge rolling (CWR) laminated shafts

open access: yesMetalurgija, 2020
The laminated shafts were prepared by CWR process. The heat treatment study was carried out to enhance its properties. The shafts were treated by different annealing processes, the changes of properties before and after annealing were compared.
S. Zhu, W. F. Peng, X. D. Shu
doaj  

Comment on "Evidence for nontrivial ground-state structure of 3d +/- J spin glasses"

open access: yes, 1998
In a recent Letter [Europhys. Lett. 40, 429 (1997)], Hartmann presented results for the structure of the degenerate ground states of the three-dimensional +/- J spin glass model obtained using a genetic algorithm. In this Comment, I argue that the method
A. W Sandvik   +5 more
core   +1 more source

Reverse Quantum Annealing Assisted by Forward Annealing

open access: yesQuantum Reports
Quantum annealers conventionally use forward annealing to generate heuristic solutions. Reverse annealing can potentially generate better solutions but necessitates an appropriate initial state. Ways to find such states are generally unknown or highly problem dependent, offer limited success, and severely restrict the scope of reverse annealing. We use
openaire   +4 more sources

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth   +6 more
wiley   +1 more source

A Review of Vacuum-ARC Multilayer Coatings with High-Strength Characteristics and Adhesive Properties

open access: yesEast European Journal of Physics
Using the TiSiN/MeN (Me = Cr, Nb, W, Mo, TiZr) coatings system as an example, the analyzed results of multilayer coatings with nanolayers of various functional purposes require a systematic approach to understanding the role of selected materials, growth
O.V. Maksakova   +10 more
doaj   +1 more source

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