A5042934064- High-Temperature Coating Behaviors
- High Entropy Alloys Studies
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Additive Manufacturing Materials and Processes
- Advanced materials and composites
- Advanced ceramic materials synthesis
- Experimental Learning in Engineering
- Magnesium Alloys: Properties and Applications
- Hydrogen Storage and Materials
- Aluminum Alloys Composites Properties
- Microstructure and Mechanical Properties of Steels
- Welding Techniques and Residual Stresses
- EFL/ESL Teaching and Learning
- Intermetallics and Advanced Alloy Properties
- Metal Alloys Wear and Properties
- Educational Technology and Pedagogy
- Sustainable Supply Chain Management
- Metal and Thin Film Mechanics
- Advanced Algorithms and Applications
- Higher Education and Teaching Methods
- Product Development and Customization
- Mechanical Engineering and Vibrations Research
- Engineering Education and Pedagogy
- Mechatronics Education and Applications
Qinghai University
2011-2025
Panasonic (Japan)
2024
National University of Singapore
2024
Utah State University
2024
Wentworth Institute of Technology
2024
University of Michigan
2024
New York City College of Technology
2020-2024
University of Colorado Colorado Springs
2024
Xiamen University of Technology
2019-2024
Northeastern University
2023
A cold-rolled B 1.5 (CrFeNi) 98.5 medium-entropy alloy was annealed at 600–1000 °C for 1 h to investigate the microstructure and mechanical properties evolution duding recrystallization annealing process. The as-cast exhibited an FCC + Cr 2 dual-phase structure dendritic microstructure. a typical bimodal grain structure. Massive BCC-structured precipitate with nano-scale formed in pahse, whose content reached peak around 800 °C, then almost disappeared 1000 °C. yield strength of reduced from...
Hydrogen (H2) production from magnesium and its alloys offers an efficient alternative to traditional methods. In magnesium-based hydrolysis, the formation of a Mg(OH)2 passivation layer significantly hinders reaction, thereby reducing hydrogen efficiency. To address this issue, increasing reaction temperature selecting appropriate materials are essential. This study adjusted compositions (pure Mg, Mg-Al, Mg-Zn) form low-melting phases (Mg17Al12 Mg7Zn3). The results demonstrate that as-cast...
Abstract Eutectic high-entropy alloys have drawn extensive attention because of their remarkable performance on the combination strength and plasticity. In this study, a new Al 0.8 CoCr 0.6 Fe 0.7 Ni x ( = 1.1, 1.5, 1.8, 2.0) eutectic alloy system was designed; microstructure mechanical properties variation with change in content were investigated detailly. All four exhibited FCC+B2 dual-phase structure, while volume fraction FCC phase increased from 44% to 90% an increase content....
For investigating the influence mechanism underlying ultrafine Ti(C, N) within micron N)-based cermets, three cermets including diverse contents were employed. In addition, for prepared their sintering process, microstructure, and mechanical properties systematically studied. According to our findings, adding primarily affects densification shrinkage behavior in solid-state stage. Additionally, material-phase microstructure evolution investigated under stage from 800 1300 °C. Adding enhanced...
The influence of cooling rate on the microstructure and mechanical properties Al0.3CoCrFeNi high-entropy alloys was systematically investigated. By adjusting preparation methods size alloys, three rates, ~2.5 K s−1, ~40 s−1 ~103 were achieved. monophasic retained FCC structure under whereas a clear refinement even distribution elements observed with an increase in rate. In addition, hardness increased from 132 HV to 165 yield strength 300 MPa 430 when amounting 25% 48% increases,...
Cooling rate is attracting considerable attention because of its significant effect on the phase stability, switchable properties, and elements' diffusion mechanism in alloys, especially high-entropy alloys (HEAs) with metastable structure. In this study, microstructure transition mechanical property variation Al0.6CoCrFeNi HEAs a change cooling were investigated detail. Five rates ∼2.5 K s−1 (I0.6 alloy), 40 (C0.6–10 2.5 × 102 (C0.6–4 103 (C0.6–2 alloy) ∼105 (R0.6 obtained by adjusting...
The beam delivery system for the linear collider focuses beams to nanometer sizes at its interaction point, collimates halo provide acceptable background in detector and has a provision state-of-the art instrumentation order reach ILC's physics goals. This paper describes design details status of baseline configuration considered reference also lists alternatives.
Abstract Developing high entropy alloys (HEAs) that possess both superior mechanical properties and low cost is a classic challenge in the design of used engineering applications. In this work, series Co-free Al x Ti (9– ) (CrFeNi) 91 ( = 0, 3, 6, 9 at%, denoted as Ti(9- hereafter) HEAs were designed to investigate influence elements on microstructure FCC-structured CrFeNi alloy pursue considerable strength-plasticity balance. Massive precipitates with nano-scale but different morphology...
Abstract In this study, ZK60 Mg alloys were prepared via hot-press sintering under a constant pressure of 30 MPa as well Ar atmosphere. The temperature was determined to be in the range 450 °C–600 °C with an interval 50 °C. effect on microstructures and mechanical properties investigated. All four sintered mainly exhibited α -Mg-phase structure equiaxed grain microstructure. However, specific amount melt, enriched Zn element, formed when reached 500 Thus, only alloy at maintained nominal...
Abstract ZK60 magnesium alloy was prepared by the hot-pressed sintering combined with hot-extruded technique. The microstructure and mechanical properties evolution of a reduced extrusion temperature from 350 °C to 250 were investigated in detailed. extruded mainly composed fine α -Mg grains MgZn 2 phase. size gradually decreased reduction temperature, yield strength obviously increased accordingly. at exhibited smallest average grain 2.5 μ m best combination plasticity, 279 MPa fracture...
AlCoCrFeNi high-entropy alloys (HEAs) were prepared by Bridgman solidification with different rates, and the mechanical behavior of HEAs was investigated over a wide strain rate range (∼10−3∼103 s−1). Microstructure observations suggest that, increasing rate, microstructure evolves from coarse columnar grains to fine equiaxed ones. Through compression tests under both quasi-static dynamic found possess positive strain-rate sensitivity (SRS), HEA lower exhibits higher SRS, which are...
Effect of carbon content on the microstructure and mechanical properties a Co-free C x (CrFeNi) 100− ( = 0, 0.5, 1, 1.5, 3, 4.5, 6 at.-%) medium-entropy alloys were systematically investigated. The increase promoted phase structure changing from single FCC to an + M 23 carbides dual-phase structure, accompanied by apparent in yield strength uneven decrease plasticity. improvement was attributed interstitial solid solution strengthening element precipitation carbides. plasticity related...
Because of the light weight and environmental advantages natural fibers, an increasing amount fibers have been used to replace synthetic in reinforced unsaturated polyester (UPE).Because impact property advantage coir toughened UPE composites can achieve excellent impacting toughness, but at cost a lower tensile performance.In order get better comprehensive performance, strength must be maintained higher level, so ropes as appropriate form were added matrix.The different weight-percent...