Results 121 to 130 of about 112,493 (258)

Vortex dislocations in wake-type flow induced by spanwise disturbances

, 2009
Vortex dislocations in wake-type flow induced by three types of spanwise disturbances superimposed on an upstream velocity profile are investigated by direct numerical simulations.
凌国灿, 赵红亮, Ling GC, Guo Can Ling, Hong Liang Zhao   +4 more
core   +1 more source

Influence of TiC and TiN Ceramic Reinforcements on the Microstructure, Thermal Expansion Behavior, and Tensile Properties of Invar 36 Manufactured by Laser Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
This study examines Invar composites reinforced with titanium carbide (TiC) and titanium nitride (TiN) using laser powder bed fusion (LPBF). It presents the influence of reinforcements on microstructure, tensile properties, and thermal expansion. Results show that TiC effectively strengthens Invar while maintaining low thermal expansion, whereas TiN ...
Ayodeji Nathaniel Oyedeji, Natasha Sacks, Johannes Pötschke, Björn Matthey   +3 more
wiley   +1 more source

Screw dislocations in GaN [PDF]

, 2002
GaN has received much attention over the past few years because of several new applications, including light emitting diodes, blue laser diodes and high-power microwave transistors.
Liliental-Weber, Zuzanna, O'Keefe, Michael A., Jasinski, Jacek B., Washburn, Jack   +3 more
core  

Rapidly Solidified High‐Strength Invar 36 Prepared by Planar‐Flow Melt Spinning

Advanced Engineering Materials, EarlyView.
The Invar 36 alloy was rapidly solidified using the planar‐flow melt‐spinning technique. Ribbon samples with thicknesses ranging from 20 to 160 mm were produced. As the grain size of the ribbon decreased to sub‐micron levels, the hardness increased by more than 2 times.
Bekir Akgül, Mehmet Kul
wiley   +1 more source

USING OF LASER EMISSION FOR ALLOYING SURFACE ALLOYS’ SAMPLES BY TYPE 38XN3MFA

Nauka ta progres transportu, 2014
The process of laser and laser-plasma methods of surface alloying of steel samples is investigated. It si determined that in the absence of cracks the structural state of the doped layer is characterized by the formation of dispersed phases in their ...
V. D. Shelyagin, V. Yu. Haskin, A. T. Nikulin, A. V. Siora, A. V. Bernatskiy   +4 more
doaj  

Gallium Microalloying in Bi–Sn Solders: Interfacial Phase Formation, Wettability, and Long‐Term Shear Reliability Under Isothermal Aging

Advanced Engineering Materials, EarlyView.
Gallium microalloying redirects interfacial reactions in low‐temperature Bi–Sn solders from Cu–Sn toward Cu–Ga intermetallic formation. The resulting Cu–Ga layer suppresses intermetallic growth during thermal aging, alters fracture pathways, and improves interfacial stability.
Iva Králová, Markéta Klimtová, Mohd Faizul Mohd Sabri, Yew Hoong Wong, Petr Veselý, Martin Plaček, Karel Dušek   +6 more
wiley   +1 more source

SIMULATION OF PROCESSES OF DIFFUSION INTERACTION AT SINTING OF POWDER MATERIALS WITH THE USE OF HYDRODYNAMIC LUBRICATION THEORY

Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2017
Powder material is a certain set of particles capable of plastically deforming both due to plastic shear of this set of particles, and due to sliding of the same set of contacting particles relative to each other. Making simulation, we proceeded from the
V. K. Sheleh, A. S. Kauchur, R. A. Maskalets   +2 more
doaj  

Temporomandibular joint sounds and disc dislocations incidence after orotracheal intubation

, 2009
Estela T Rodrigues1, Iván C Suazo2, Antonio S Guimarães31Centro de Pós Graduação em Odontologia São Leopoldo Mandic, Campinas, Brasil; 2Department of Morphology.
Iván C Suazo, Estela T Rodrigues, Antonio S Guimarães   +2 more
core  

High‐Entropy Alloy Interlayers Toward Advanced Joining for High‐Performance Structural Applications: Current Progress and Emerging Challenges

Advanced Engineering Materials, EarlyView.
HEA interlayers offer a versatile route for joining high‐performance structural materials. Their compositional and structural design regulates interfacial reactions, suppresses brittle IMCs, and improves metallurgical bonding. Sandwich interlayers further integrate defect healing with precipitation strengthening, enabling improved strength–ductility ...
Lin Yuan, Jiafen Song, Jinglong Li, Jiangtao Xiong, Tao Yang   +4 more
wiley   +1 more source

Observation of the Impact of Dislocations on Atomic Polarization and Domain Structures in BaTiO3

Advanced Physics Research
Line defects, dislocations, in ferroelectric materials can facilitate the nucleation of new domains and pin the motion of domain walls, leading to significant electromechanical responses.
Shan Xiang, Yan Zhang, Miao Song, Edoardo Zatterin, Hanyu Gong, Fangping Zhuo, Kechao Zhou, Dou Zhang   +7 more
doaj   +1 more source