Results 101 to 110 of about 92,935 (292)

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

open access: yesAdvanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan   +5 more
wiley   +1 more source

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

open access: yesAdvanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb   +6 more
wiley   +1 more source

Robust Spot Melting by 3D Spot Arrangements in Electron Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
This work proposes an approach to replace separately melted contours for spot melting in electron beam powder fusion. Adapting the spot arrangements close to the contour combined with stacking yields a comparable surface quality without the inherent challenges of separate contours, as demonstrated, by electron optical images and roughness measurements.
Tobias Kupfer   +4 more
wiley   +1 more source

Peningkatan keterampilan berbicara bahasa arab materi afrad al usrah dengan strategi inner outer circle di kelas 4 MI Sunan Ampel Tongas Probolinggo [PDF]

open access: yes, 2017
Penelitian ini dilatar belakangi oleh adanya kesulitan siswa kelas IV MI Sunan Ampel Tongas Probolinggo pada keterampilan berbicara bahasa Arab. Hal ini terlihat ketika siswa diajak untuk bercakap-cakap menggunakan bahasa Arab yang sederhana, siswa masih
Maulidevi, Fatimatuz Zuhriyah
core  

Blast-Induced Damage on Millisecond Blasting Model Test with Multicircle Vertical Blastholes

open access: yesShock and Vibration, 2015
To investigate the blast-induced damage effect on surrounding rock in vertical shaft excavation, 4 kinds of millisecond blasting model tests with three-circle blastholes were designed and carried out with excavation blasting in vertical shaft as the ...
Qin-yong Ma   +4 more
doaj   +1 more source

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

open access: yesAdvanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai   +6 more
wiley   +1 more source

The lost opportunity of Melbourne's outer circle railway

open access: yes, 2017
This thesis examines a little known railway line in Melbourne, the Outer Circle Railway (OCR) running from Oakleigh in the south-east to Fairfield in the north.
McKenna, Trevor
core  

A new Gray’s anatomy of English grammar : review article on R. Huddleston and G. Pullum, ‘The Cambridge grammar of the English language’, 2002. [PDF]

open access: yes, 2004
This article reviews Huddleston & Pullum (2002) from the viewpoint of a co-author of Quirk, Greenbaum, Leech & Svartvik (1985). (This author, however, makes no claim whatsoever to represent the views of the other authors of Quirk et al.) Particular ...
Leech, Geoffrey
core  

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

open access: yesAdvanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han   +5 more
wiley   +1 more source

Parameterized family of annular homeomorphisms with pseudo-circle attractors

open access: yes, 2023
In this paper we construct a paramaterized family of annular homeomorphisms with Birkhoff-like rotational attractors that vary continuously with the parameter, are all homeomorphic to the pseudo-circle, display interesting boundary dynamics and ...
Oprocha, Piotr, Činč, Jernej
core  

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