Results 111 to 120 of about 3,253,810 (284)

Effects of Temperature and Secondary Orientations on the Deformation Behavior of Single-Crystal Superalloys

Crystals
The tensile behavior of single-crystal superalloys was investigated at room temperature (RT) and 850 °C, focusing on various secondary orientations. Transmission electron microscopy (TEM) and quasi in situ electron backscatter diffraction (EBSD) were ...
Sujie Liu, Cui Zong, Guangcai Ma, Yafeng Zhao, Junjie Huang, Yi Guo, Xingqiu Chen   +6 more
doaj   +1 more source

Heterogeneous Strain Distribution and Saturation of Geometrically Necessary Dislocations in a Ferritic-Pearlitic Steel during Lubricated Sliding

, 2018
The microstructural evolution of ferritic-pearlitic steel is studied during unidirectional sliding under boundary lubrication using a ball‐on‐flat configuration.
Carsten Gachot, Mücklich, Frank, Franek, Friedrich, Manel Rodríguez Ripoll, Gachot, Carsten; orcid:, Mathias Linz, Andreas Steiger-Thirsfeld, Frank Mücklich, Christoph Pauly, Rodríguez Ripoll, Manel, Pauly, Christoph, Bernardi, Johannes, Friedrich Franek, Johannes Bernardi, Steiger-Thirsfeld, Andreas, Linz, Mathias   +15 more
core   +1 more source

Polar Wurtzite NbAlN: A Transition‐Metal Nitride Alloy for Polarization‐Engineered GaN Heterostructures

Advanced Materials, EarlyView.
A novel polar wurtzite alloy, NbAlN, is demonstrated as a transition‐metal‐containing polar barrier for GaN heterostructures. Nb atoms form coherent nanoscale enrichment within the wurtzite lattice without disrupting metal polarity. This study demonstrates that transition metals can be integrated into polar nitrides to enable polarization‐related ...
Atsushi Kobayashi, Souta Kurogi, Tomoya Okuda, Riku Kikuchi, Yusuke Wakamoto, Kouei Kubota, Hikaru Sasaki, Kazuhisa Ikeda, Kanako Shojiki, Takahiro Kawamura, Toru Akiyama, Takehito Seki, Takuya Maeda   +12 more
wiley   +1 more source

Elasticity‐Driven Periodic Polarization Patterns in a Chiral Ferroelectric Nematic Fluid

Advanced Materials, EarlyView.
Chiral polar ferroelectric nematic fluids exhibit spontaneous formation of stripe, square, and hexagonal polarization textures under confinement. Controlled by thickness and anchoring, these patterns produce spatially modulated nonlinear optical responses.
Anej Sterle, Peter Medle Rupnik, Luka Cmok, Aitor Erkoreka, Marta Lavrič, Natan Osterman, Calum J. Gibb, Jordan Hobbs, Josu Martinez‐Perdiguero, Richard J. Mandle, Alenka Mertelj, Nerea Sebastián   +11 more
wiley   +1 more source

Indentation size effectin tungsten: Quantification of geometrically necessary dislocations underneath the indentations using HR-EBSD

, 2018
During indentation testing of the low defect density crystalline materials, higher hardness values are found at lower indentation depths, which is referred to as an indentation size effect. The depth-dependence of hardness can be described by the Nix-Gao
Bruder, Enrico, Farhan Javaid, Karsten Durst, Xu, Y., Durst, Karsten, Enrico Bruder, Javaid, Farhan, Yukun Xu   +7 more
core   +1 more source

Fiber‐Format Flexible Linear Electrostatic Motors

Advanced Materials, EarlyView.
A flexible coaxial fibre‐format electrostatic motor enables backdrivable and reversible linear actuation with high force density and functionality under bending, offering a scalable actuation platform for soft and wearable robotics. ABSTRACT Linear motion is fundamental to robotics, yet existing solutions are either rigid electromagnetic motors or ...
Sylvain Schaller, Herbert Shea
wiley   +1 more source

Flow stress anisotropy caused by geometrically necessary boundaries

, 1992
The microstructural anisotropy of deformed metal is related to the formation of geometrically necessary boundaries such as dense dislocation walls and microbands.
Hansen, N., Juul Jensen, D.
core   +1 more source

Recent Advances in Plasma‐Enhanced Atomic Layer Etching for Next‐Generation Nanofabrication

Advanced Materials Interfaces, EarlyView.
Continued semiconductor miniaturization demands atomic‐scale patterning and ultralow surface roughness beyond the capabilities of conventional reactive ion etching. This review highlights advances in isotropic and anisotropic plasma‐enhanced atomic layer etching since 2020, covering fundamental mechanisms, applications across major semiconductor ...
Shih‐Nan Hsiao
wiley   +1 more source

The Role of Dislocation Type in the Thermal Stability of Cellular Structures in Additively Manufactured Austenitic Stainless Steel

Advanced Science
The ultrafine cellular structure promotes the extraordinary mechanical performance of metals manufactured by laser powder‐bed‐fusion (L‐PBF). An in‐depth understanding of the mechanisms governing the thermal stability of such structures is crucial for ...
Dayong An, Yao Xiao, Junshi Yu, Xu Zhang, Zan Li, Yan Ma, Rui Li, Xianhong Han, Xifeng Li, Jun Chen, Stefan Zaefferer   +10 more
doaj   +1 more source

Geometrically necessary dislocations on plastic deformation of polycrystalline TRIP steel

In this study, the main deformation behavior in terms of geometrically necessary dislocations (GND) was investigated on a transformation induced plasticity (TRIP) stainless steel by using sharp indentation at nanometric length scale.
Fargas Ribas, Gemma, Mateo García, Antonio Manuel, Suárez Vallejo, Sebastian, Roa Rovira, Joan Josep, Guitar, Agustina   +4 more
core