Results 111 to 120 of about 866,581 (318)

CALPHAD‐Guided Prediction and Interpretation of Phase Formation in Ta–Mo–Cr–Ti–Al Refractory High‐Entropy Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
This study designs Ta–Mo–Cr–Ti–Al refractory high‐entropy alloys with a disordered body‐centered‐cubic A2 crystal structure aiming for improved ductility, lower density, and oxidation resistance. Four alloy compositions are identified by thermodynamic calculations.
Kateryna Khanchych   +7 more
wiley   +1 more source

Transverse coherent transition radiation for diagnosis of modulated proton bunches

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2012
Transverse coherent transition radiation (TCTR) emitted by a relativistic particle bunch traversing a conducting surface is analyzed. The bunch emits dipolelike radiation in the direction transverse to the bunch axis when the beam radius is smaller than ...
A. Pukhov, T. Tueckmantel
doaj   +1 more source

Inflation with a graceful exit and entrance driven by Hawking radiation

open access: yes, 2012
We present a model for cosmological inflation which has a natural "turn on" and a natural "turn off" mechanism. In our model inflation is driven by the Hawking-like radiation that occurs in Friedman-Robertson-Walker (FRW) space-time.
Douglas Singleton   +5 more
core   +1 more source

Mitigation of Cracks in High‐Performance Nickel‐Based Superalloys in Powder Bed Fusion Laser Beam of Metals Using a Metal Matrix Composite Approach

open access: yesAdvanced Engineering Materials, EarlyView.
High‐performance nickel‐based superalloys are often not processible in additive manufacturing (AM) due to hot cracking. The findings in this manuscript propose an efficient method to mitigate cracking and enhance mechanical properties of these alloys by producing a metal matrix composite, contributing to the material and process perspective of the AM ...
Klaus Büßenschütt   +3 more
wiley   +1 more source

Investigation of Iron‐Aluminide‐Like Phase Composition in Complex Concentrated Fe32Cu12Ni11Ti16Al29 Alloy

open access: yesAdvanced Engineering Materials, EarlyView.
This work reveals the phase composition and quantitative morphology analysis of precipitation‐hardened Fe32Cu12Ni11Ti16Al29 complex‐concentrated alloy. The precipitates are shown to have a high coherency. Morphology transition between sphere, cuboidal, and elongated morphology is observed. Finally, the overaging behavior is captured using microhardness.
Rostyslav Nizinkovskyi   +4 more
wiley   +1 more source

ELECTROMAGNETIC COMPATIBILITY OF SEMICONDUCTOR DEVICES EXPOSED TO TRANSITION RADIATION

open access: yesСучасні інформаційні системи, 2019
The subject of the paper is an analysis and a physical model of the occurrence of reversible failures in semiconductor diodes (when current-voltage characteristics of the devices are influenced by electromagnetic radiation (EMR)).
Volodymyr Knyazev   +3 more
doaj   +1 more source

Direct Electron Detection Electron Energy‐Loss Spectroscopy: Speeding Up 2D Analytical In Situ Transmission Electron Microscopy for Aluminum Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
Scanning transmission electron microscopy imaging techniques are an essential tool to document dynamic developments, such as precipitation in aluminum alloys, during in situ heating experiments using transmission electron microscopy. However, in many cases, chemical information is required to interpret complex nanoscale processes.
Evelin Fisslthaler   +4 more
wiley   +1 more source

Performance prediction of VO2-based smart radiation devices through semi-self-supervised learning with phase transition adaptation

open access: yesNext Energy
Accurately forecasting the infrared radiation properties of multilayer systems exhibiting phase transition behavior presents a formidable challenge. In this study, we propose a physically-inspired Phase Transition Adaptation Model (PTAM) that leverages a
Yanyu Chen   +6 more
doaj   +1 more source

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