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11 results on '"YAFEI HAN"'

9. Dynamic mechanical behaviour and microstructure of Al/Teflon reactive materials

Author

Qiang Wu, Yafei Han, Chuang Chen, Ning Zhang, Enling Tang, and Lixiang Jiang

Subjects
010302 applied physics, Materials science, Mechanical Engineering, 02 engineering and technology, Split-Hopkinson pressure bar, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Microstructure, 01 natural sciences, Mass Percentage, Mechanics of Materials, 0103 physical sciences, General Materials Science, Particle size, Composite material, 0210 nano-technology, Reactive material
Abstract

Dynamic compressive behavior of 2 kinds of Al/Teflon reactive materials samples are analyzed by using the Split Hopkinson pressure bar. The mass percentage of the samples is 26.5% Al and 73.5% Tefl...

Published
2021

10. Relationships between shock stress and electrical output characteristics for PZT-5H under high-velocity impact loading

Author

Li Wang, Yafei Han, Ruizhi Wang, and Enling Tang

Subjects
Materials science, Physics::Instrumentation and Detectors, Projectile, Mechanical Engineering, General Mathematics, High velocity, Piezoelectricity, Computer Science::Other, Shock (mechanics), law.invention, Stress (mechanics), Condensed Matter::Materials Science, Mechanics of Materials, law, Condensed Matter::Superconductivity, visual_art, Impact loading, visual_art.visual_art_medium, General Materials Science, Ceramic, Composite material, Resistor, Civil and Structural Engineering
Abstract

To disclose the electrical output characteristics of PZT-5H piezoelectric ceramic with 50 ohm resistor as a electrical output load at the condition of different projectile’ ratios of length to diam...

Published
2019

11. Development of directionally solidified Ni-Al-Mo-B-Y alloy IC6A

Author

C. B. Xiao, Yafei Han, S. S. Li, and J. X. Song

Subjects
Materials science, Precipitation (chemistry), Mechanical Engineering, Metallurgy, Alloy, chemistry.chemical_element, Y alloy, Yttrium, Atmospheric temperature range, engineering.material, Condensed Matter Physics, Microstructure, Fracture toughness, Creep, chemistry, Mechanics of Materials, engineering, General Materials Science
Abstract

A directionally solidified Ni3Al based alloy designated IC6A with the chemical composition Ni - (7.5 - 8.5)Al - (13.0 - 15.0)Mo - (0.02 - 0.1)B - (0.001 - 0.20)Y (wt-%) has been recently developed as a high-temperature structural material for advanced jet-engine vanes operating in the temperature range 1050 - 1100 ° C. Microstructural analysis results show that the regions consisted of Ni3Y, Mo1.24Ni0.76 and γ phases and surrounded by large size γ ′ phases precipitate in the interdendritic areas of alloy IC6A when the content of yttrium is near to the upper limit. Ni3Y and Mo1.24Ni0.76 have no obvious change during high temperature aging. A needle like or rod like phase named Y - NiMo precipitates after aging at 950 ° C for about 200 h. The high temperature cyclic oxidation resistance of alloy IC6A is fairly good owing to the presence of yttrium. The tensile properties, high temperature stress rupture properties and creep properties, high cycle fatigue properties and impact toughness of alloy IC6...

Published
2003

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