A5071936979- Advanced Welding Techniques Analysis
- Aluminum Alloys Composites Properties
- Welding Techniques and Residual Stresses
- Metal Forming Simulation Techniques
- Adsorption and biosorption for pollutant removal
- Titanium Alloys Microstructure and Properties
- MXene and MAX Phase Materials
- Hydrogen embrittlement and corrosion behaviors in metals
- Aluminum Alloy Microstructure Properties
- Magnesium Alloys: Properties and Applications
- Mechanical stress and fatigue analysis
- Corrosion Behavior and Inhibition
- High Entropy Alloys Studies
- Chemical Synthesis and Characterization
- Advanced Polymer Synthesis and Characterization
- Advanced materials and composites
- High-Temperature Coating Behaviors
- Microstructure and Mechanical Properties of Steels
- Metallurgy and Material Forming
- Photopolymerization techniques and applications
- Advanced ceramic materials synthesis
- Fuel Cells and Related Materials
- Analytical chemistry methods development
- Metal and Thin Film Mechanics
- Dyeing and Modifying Textile Fibers
Nanjing University of Aeronautics and Astronautics
2020-2024
Ludong University
2013-2024
In the present work, duplex stainless steels (DSSs) SAF2507 were friction stir processed with flowing cryogenic medium mixed liquid nitrogen and industrial ethanol. Homogeneous ultrafine grained (UFG) dual-phase structure ferrite (α) austenite (γ) grains average size of around 1 μm was obtained due to significantly lower peak temperature shorter high-temperature duration. The developed UFG enabled a dramatic enhancement yield strength by about 22 %, while maintaining high elongation 55 %...
In this study, friction stir welding (FSW) of 2-mm-thick Ti–6Al–4V alloy plates was performed using a newly designed tool—and the effect rotation speed and on microstructure mechanical properties joints were investigated. A simulation model for FSW temperature field calculation developed, investigated by experimental numeric methods. The results show that has dominant peak temperature, while determines dwell time weld exposed to high temperatures. addition, influence process parameters...
Alumina-forming austenitic (AFA) steel is considered as a promising candidate used for advanced energy systems. Fusion welding of steels usually requires the introduction certain delta (δ) ferrite to avoid thermal cracking, but AFA steel, presence δ will greatly accelerate precipitation hard and brittle sigma (σ) phase at its target service temperature. In this work, with typical composition, we demonstrated superior capability friction stir (FSW) in avoiding formation σ phases, developing...
The hot-wire TIG welding equipment was built based on the heat-conduction method. temperature-controlling model developed and verified within a certain temperature range. results showed that wire could be maintained at 220±5°C. comparing experiments between with of 220 °C ordinary were conducted. method improve appearance feeding speed. When similar, efficiency in root doubled compared TIG. cap tripled Moreover, microstructure seam finer than welding. hardness harder slightly. Good...
Dissimilar AZ31B/2024-T4 T-lap-joint was successfully fabricated by friction stir welding (FSW) with the rotation speed of 600r/min and 65 mm/min. The microstructure characteristics were observed analyzed optical microscope (OM) forming mechanisms discussed energy spectrometer (EDS) X-ray diffractometer (XRD). In addition, effect on mechanical properties analyzed. results showed that metal skin stringer are fully mixed at original connection surface under action stirring pin. welded joint...