Results 61 to 70 of about 262,704 (260)

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source

Crystal design using multipolar electrostatic interactions: A concept study for organic electronics

Beilstein Journal of Organic Chemistry, 2013
Using a simple synthetic protocol, heterohexacene analogues with a quadrupolar distribution of partial charges are readily available. In contrast to most other acenes, these compounds crystallize with a slipped-stack, brickwork-like packing which is ...
Peer Kirsch, Qiong Tong, Harald Untenecker   +2 more
doaj   +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

Twist, splay, and uniform domains in ferroelectric nematic liquid crystals

Nature Communications
The newly-discovered ferroelectric nematic liquid crystal exhibits a variety of unique defect phenomena. The depolarization field in the material favors spontaneous spatial variations in polarization, manifesting in diverse forms such as bulk twists and ...
Maxim O. Lavrentovich, Priyanka Kumari, Oleg D. Lavrentovich   +2 more
doaj   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

π-π2max: Bridging molecular characteristics to crystal packing in nitro-containing two-dimensional energetic materials

Defence Technology
Two-dimensional energetic materials (2DEMs), characterized by their exceptional interlayer sliding properties, are recognized as exemplar of low-sensitivity energetic materials.
Xiaokai He, Chao Chen, Zhixiang Zhang, Linyuan Wen, Yiding Ma, Yilin Cao, Yingzhe Liu   +6 more
doaj   +1 more source

Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales

Advanced Engineering Materials, EarlyView.
Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik, Alexander Jelinek, Markus Alfreider, Jutta Luksch, Anton Hohenwarter, Florian Schaefer, Christian Motz, Daniel Kiener   +7 more
wiley   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Multifunctional zinc-ion capacitors for energy storage

Communications Materials
Zinc-ion capacitors are promising energy storage systems due to their high theoretical capacity, environmental friendliness, and cost effectiveness. Recently, to broaden application scenarios, multifunctional zinc-ion capacitors have been designed and ...
Pu Guo, Yuyan Tang, Zhengjun Deng, Xiaoqian Ju, Shudong Xu, Yuzhen Zhao, Shaohui Li, Jingwei Chen   +7 more
doaj   +1 more source

Anisotropic wood cellulose-based multifunctional cellulosic hydrogel integrating boronic-ionic dynamics for wearable and structural sensing applications

Industrial Crops and Products
Wood-derived anisotropic cellulosic scaffolds provide a sustainable platform for constructing multifunctional hydrogels for flexible sensing applications.
Wenqi Song, Puang Lu, Liwei Qian, Yuhao Zhang, Zongcheng Miao, Yuzhen Zhao, Bin Lu, Chunyang Lan, Lu Wang, Valentin Nica   +9 more
doaj   +1 more source