Results 31 to 40 of about 2,381 (212)

Lithium Niobate Single Crystals and Powders Reviewed—Part II

Crystals, 2020
A review on lithium niobate single crystals and polycrystals has been prepared. Both the classical and recent literature on this topic is revisited. It is composed of two parts with several sections. The current part discusses the available defect models
Oswaldo Sánchez-Dena, Sergio David Villalobos-Mendoza, Rurik Farías, Cesar David Fierro-Ruiz   +3 more
doaj   +1 more source

Evaluation of dielectric and piezoelectric behavior of unpoled and poled barium titanate polycrystals with oxygen vacancies using phase field method

International Journal of Smart and Nano Materials, 2016
This article studies the dielectric and piezoelectric behavior of unpoled and poled barium titanate (BaTiO3) polycrystals with oxygen vacancies. A phase field model is employed for BaTiO3 polycrystals, coupled with the time-dependent Ginzburg–Landau ...
Fumio Narita, Takuya Kobayashi, Yasuhide Shindo   +2 more
doaj   +1 more source

Industrial potential of additive manufacturing of transparent ceramics: A review

Open Ceramics
Transparent ceramics is a unique class of materials, with performance comparable to single crystals, but a high process flexibility given by ceramic technology.
Andrea Volfi, Laura Esposito, Valentina Biasini, Andreana Piancastelli, Jan Hostaša   +4 more
doaj   +1 more source

Compression-Induced Polycrystal-Glass Transition in Binary Crystals

Physical Review X, 2018
A polycrystal will transform into a glass when its grain size is sufficiently reduced. However, it is not clear how the polycrystal-glass boundary can be identified, whether the boundary is a sharp point or a crossover regime, and what features exist at ...
Huijun Zhang, Yilong Han
doaj   +1 more source

Modeling of inter- and transgranular stress corrosion crack propagation in polycrystalline material by using phase field method

Journal of the Mechanical Behavior of Materials, 2017
A coupled multiphysics phase field framework is proposed to model anodic dissolution induced by stress corrosion fracture growth at microstructual level.
Nguyen Thanh-Tung, Réthoré Julien, Baietto Marie-Christine, Bolivar José, Fregonese Marion, Bordas Stéphane P.A.   +5 more
doaj   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Crystal Dislocations

Crystals, 2016
Crystal dislocations were invisible until the mid-20th century although their presence had been inferred; the atomic and molecular scale dimensions had prevented earlier discovery.
Ronald W. Armstrong
doaj   +1 more source

Structure of Nanoparticles Embedded in Micellar Polycrystals [PDF]

Langmuir, 2012
accepted for publication in ...
Tamborini, Elisa, Ghofraniha, Neda, Oberdisse, Julian, Cipelletti, Luca, Ramos, Laurence   +4 more
openaire   +5 more sources

Triple Junctions as Dislocation‐Like Defects: The Role of Grain Boundary Crystallography Revealed by Experiment and Atomistic Simulation

Advanced Engineering Materials, EarlyView.
Grain boundary triple junctions are an essential ingredient of the microstructure of polycrystalline materials. In this study, a triple junction is observed using atomic‐resolution scanning transmission electron microscopy and characterized. Computer simulations reveal that the junction has a dislocation character that is determined by the joining ...
Tobias Brink, Saba Saood, Peter Schweizer, Jörg Neugebauer, Gerhard Dehm   +4 more
wiley   +1 more source

Elastic Properties and Thermal Expansion Behavior of a Polycrystalline VMnFeCoNi High‐Entropy Alloy

Advanced Engineering Materials, EarlyView.
The high‐entropy alloy (HEA) V20Mn20Fe20Co20Ni20 (composition in at.%) can be made single‐phase face‐centered cubic (FCC) when annealed above 1338 K followed by water quenching. In this state, the alloy exhibits the greatest strength‐ductility combination of any quinary single‐phase FCC HEA.
Guillaume Laplanche, Marie Münchhalfen, Aditya Srinivasan Tirunilai, Jürgen Schreuer   +3 more
wiley   +1 more source