Results 121 to 130 of about 192,787 (292)

Analysis and Modeling of Stress-Strain Curves in Microalloyed Steels Based on a Dislocation Density Evolution Model. [PDF]

Materials (Basel), 2022
Sobotka E, Kreyca J, Poletti MC, Povoden-Karadeniz E.   +3 more
europepmc   +1 more source

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

Advanced 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, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Step-free GaN surfaces grown by confined-area metal-organic vapor phase epitaxy

APL Materials, 2017
A two-step homoepitaxial growth process producing step-free surfaces on low dislocation density, Ga-polar ammonothermal GaN single crystals is described.
Christopher T. Shelton, Isaac Bryan, Elizabeth A. Paisley, Edward Sachet, Jon F. Ihlefeld, Nick Lavrik, Ramón Collazo, Zlatko Sitar, Jon-Paul Maria   +8 more
doaj   +1 more source

Effect of Microstructure and Dislocation Density on Material Removal and Surface Finish of Laser Powder Bed Fusion 316L Stainless Steel Subject to a Self-Terminating Etching Process. [PDF]

3D Print Addit Manuf, 2023
Prochaska S, Walker M, Hildreth O.
europepmc   +1 more source

Phenomenological and Physically Based Modeling of Flow Stress and Strengthening Mechanism of Inconel 718

Advanced Engineering Materials, EarlyView.
Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein, Oliver Schenk, Christoph Broeckmann   +2 more
wiley   +1 more source

Multiscale investigation of precipitate-dislocation interactions in additive manufacturing: a coupled phase-field and thermal stress dynamics approach

Virtual and Physical Prototyping
Non-equilibrium solidification during NiTi alloys manufacturing via Laser Beam Powder Bed Fusion (PBF-LB), induces dendritic morphologies and heterogeneous precipitate distribution.
Xin Lin, Xun Li, Yan Zhou, Yuanyuan Li, Sunming Chen, Kunpeng Zhu   +5 more
doaj   +1 more source

Influence of misorientation angle and local dislocation density on β-phase distribution in Al 5xxx alloys. [PDF]

Sci Rep, 2022
Desai Choundraj J, Kacher J.
europepmc   +1 more source

Investigation of Oxygen‐Free Wetting Behavior of Aluminum on Copper via Molecular Dynamics Simulations and Experiments

Advanced Engineering Materials, EarlyView.
The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu, Timon Steinhoff, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Christian Klose, Ludger Overmeyer, Hans‐Jürgen Maier, Nina Merkert   +8 more
wiley   +1 more source

Infrared stimulated emission with an ultralow threshold from low-dislocation-density InN films grown on a vicinal GaN substrate. [PDF]

Fundam Res, 2022
Liu H, Sheng B, Wang T, Kudryavtsev K, Yablonskiy A, Wei J, Imran A, Chen Z, Wang P, Zheng X, Tao R, Yang X, Xu F, Ge W, Shen B, Andreev B, Wang X.   +16 more
europepmc   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source