Results 91 to 100 of about 395,735 (308)

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

Advanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat, Guido Barale, John Stavridis, Ehsan Norouzi, Jin‐Yoo Suh, Dong‐Ik Kim, Luca Iuliano, Abdollah Saboori   +7 more
wiley   +1 more source

Gas desorption and electron emission from 1 MeV potassium ion bombardment of stainless steel

Physical Review Special Topics. Accelerators and Beams, 2004
Gas desorption and electron emission coefficients were measured for 1 MeV potassium ions incident on stainless steel at grazing angles (between 80° and 88° from normal incidence) using a new gas-electron source diagnostic (GESD).
Arthur W. Molvik, Michel Kireeff Covo, Frank M. Bieniosek, Lionel Prost, Peter A. Seidl, David Baca, Adam Coorey, Akira Sakumi   +7 more
doaj   +1 more source

Focused ion beam–scanning electron microscope examination of high burn-up UO2 in the center of a pellet

Nuclear Engineering and Technology, 2018
Focused ion beam–scanning electron microscope and electron backscattered diffraction examinations were conducted in the center of a 73 GWd/tU UO2 fuel. They showed the formation of subdomains within the initial grains.
J. Noirot, I. Zacharie-Aubrun, T. Blay
doaj   +1 more source

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

Advanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold, Dylan Jennings, Robert Vaßen   +2 more
wiley   +1 more source

Speeding up fluid models for gas discharges by implicit treatment of the electron energy source term

, 2000
Numerical fluid models are widely used in gas discharge physics. A typical discharge model comprises continuity equations and drift–diffusion equations for reactive particle species, a balance equation for the electron energy, and Poisson's equation for ...
Hagelaar, GJM Gerjan, Hagelaar, G.J.M., Kroesen, GMW Gerrit, Kroesen, G.M.W.   +3 more
core   +1 more source

Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing

Advanced Engineering Materials, EarlyView.
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu, Xun Zhang, Jack M. Donoghue, Albert D. Smith, Rahul Unnikrishnan, Rhys Thomas, Vahid Nekouie, Jie Luo, Dongchen Hu, Michael Preuss, Philip J. Withers   +10 more
wiley   +1 more source

Performance Studies of Aluminium-Based Gas Electron Multiplier Detector

Sensors
In this paper, we report on a systematic study of a soft X-ray Gas Electron Multiplier (GEM) detector built with aluminium-clad kapton GEM foils. The primary objective of this research is to comprehend the performance of this type of detector when ...
Bartosz Mindur, Tomasz Fiutowski, Piotr Wiącek   +2 more
doaj   +1 more source

Measured gas desorption and electron cloud effects with an intense ion beam in a solenoid lattice

Physical Review Special Topics. Accelerators and Beams, 2008
Electron cloud and gas measurements were conducted in a solenoid lattice with a 10  μs, singly charged K^{+} ion bunch at an ion energy of 0.3 MeV and currents of 26 and 45 mA.
J. E. Coleman, P. A. Seidl, J. L. Vay, A. W. Molvik, W. M. Sharp   +4 more
doaj   +1 more source

Effect of neutral gas temperature on low-pressure RF argon discharges: A fluid simulation [PDF]

AIP Advances
Based on plasma fluid theory, using the drift-diffusion approximation, a one-dimensional fluid model is established for the plasmas in low-pressure RF argon discharge between parallel-plate electrodes.
Rui-Hong Fu, Hao-Yu Gao, Ze-Hui Zhang, Yue Liu   +3 more
doaj   +1 more source

Performance Analysis of Abradable Coating Systems for Aircraft Gas Turbines

Advanced Engineering Materials, EarlyView.
Three CoNiCrAlY/YSZ/MgAl2O4 abradable liner configurations on a nickel‐superalloy are evaluated by thermal‐gradient cycling and incursion tests. Laser ablation of the bondcoat and/or Y2O3‐stabilized ZrO2 (YSZ) intermediate layer increases mechanical interlocking and bonding for thick topcoats.
Hanna Heyl, Daniel Emil Mack, Martin Tandler, Susanne Schrüfer, Robert Vaßen   +4 more
wiley   +1 more source