Results 41 to 50 of about 15,089,367 (243)

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Preparation of TiZrHfNbTaO

Next Energy
This work focuses on the preparation and detailed characterization of oxide ceramic fibers composed of group IV (Ti, Zr, Hf) and group V (Ta, Nb) refractory transition metals.
Ivan Shepa, Kateryna Nemesh, Erika Mudra, Petra Hviscova, Richard Smolko, Frantisek Kromka, Dasa Drencakova, Maksym Lisnichuk, David Pavlinak, Lorena Tamarit, M. Luisa Marin, Francisco Bosca   +11 more
doaj   +1 more source

A review of the high-entropy ceramic materials for thermal barrier coatings: Design, synthesis, sintering and properties [PDF]

Processing and Application of Ceramics
Thermal barrier coatings are used as a surface technology for hot-end components of turbine engines, and the continuous development of aerospace technology puts higher requirements on ceramic materials for thermal barrier coatings. High-entropy ceramics,
Liu Jiahang, Wang Yiyong, Lu Zhe, Zhou Yanwen, Li Yan, Zhang Jing, Lyu Guanlin, Jung Yeon-Gil   +7 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Anti-penetration performance of high entropy alloy–ceramic gradient composites

, 2018
A high-entropy alloy–ceramic gradient composite of TiC–TiB 2 /75vol% Al 0.3 CoCrFeNi was successfully prepared by combustion synthesis under an ultra-high gravity field, which is a low-cost method with high efficiency. The ceramic particles were gradient
Lu Xie (55571), Yi-Nan Shen (6067352), Xiao Yang (19898), Han Li (1253865), Wen-Rui Wang (2229931), Hui-Fa Xie (7154876)   +5 more
core   +7 more sources

Dielectric and ferroelectric characteristics of Ba(Ti0.25Zr0.25Hf0.25Sn0.25)O3 high-entropy ceramics

Journal of Materiomics, 2023
Ba(Ti0.25Zr0.25Hf0.25Sn0.25)O3 high-entropy ceramics were prepared by a standard solid state reaction process, and the dielectric and ferroelectric characteristics were investigated together with the structures.
Rui Hu Mi, Bu Hang Chen, Xiao Li Zhu, Xiang Ming Chen   +3 more
doaj   +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

Research progress and challenge of high entropy ceramic materials

Cailiao gongcheng
As a new material system, the high entropy ceramics have become a hot research topic in the field of materials because of their unique and adjustable properties benefited by the huge component space, unique microstructure and large configuration entropy.
WANG Yunping, LIU Shimin, DONG Chuang
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Recent development of high-entropy transitional carbides: a review

, 2020
The high-entropy carbides (HECs) are reviewed in terms of the crystal structure, powder synthesis, densification, and mechanisms in this article. The inter-diffusion rate of binary carbide is mainly analyzed and predicted based on lattice parameters ...
Yu, Duo, Yin, Jie, Zhang, Buhao, Huang, Zhengren, Liu, Xuejian   +4 more
core   +1 more source