A5100442124- Welding Techniques and Residual Stresses
- Advanced Welding Techniques Analysis
- Aluminum Alloy Microstructure Properties
- Additive Manufacturing Materials and Processes
- Microstructure and Mechanical Properties of Steels
- Cellular and Composite Structures
- High Entropy Alloys Studies
- Aluminum Alloys Composites Properties
- Hydrogen embrittlement and corrosion behaviors in metals
- Mechanical Behavior of Composites
- Innovative concrete reinforcement materials
- Structural Response to Dynamic Loads
- Laser Material Processing Techniques
- Structural Analysis and Optimization
- Industrial Technology and Control Systems
- Geoscience and Mining Technology
- Advanced Data Storage Technologies
- Advanced ceramic materials synthesis
- Innovations in Concrete and Construction Materials
- Cloud Computing and Resource Management
- Microstructure and mechanical properties
- Odor and Emission Control Technologies
- High-Temperature Coating Behaviors
- Polymer composites and self-healing
- Infrastructure Maintenance and Monitoring
Hong Kong Polytechnic University
2023-2025
Nanjing University of Aeronautics and Astronautics
2025
China Southern Power Grid (China)
2024
Huazhong University of Science and Technology
2015-2024
Shanghai Jiao Tong University
2015
Tongji University
2007-2014
Henan Polytechnic University
2013
China University of Petroleum, Beijing
2010
State Key Laboratory of Concrete Materials Research
2002
In multi-layer welding, the interaction between weld beads had a great impact on performance of overall joint. Therefore, experimental research and thermal-plastic analysis 316L stainless steel hybrid laser-arc welding were performed. The reasonable heat sources proposed to simulate (HLAW) laser beam (LBW). simulation results temperature field residual stress distribution both validated in accordance with measurements. On this basis, Combining simulated metallurgical analysis, microstructure...
This paper studied the dissimilar aluminum alloys (5082/6061) laser lap welding with different configurations. Two configurations were set up by exchanging place position of upper and lower plates under same parameters. When higher Mg content alloy located as plate, evaporation led to instable process actual heat input, which affected weld morphology. The solidification microstructures near fusion line two joints observed SEM analyzed coupling temperature field phase method simulation...
This paper studied lap welding on 1.5 mm AA6061 and AA5182 aluminum alloy sheets with laser beam circular oscillation. The joint form is commonly used in new energy car bodies to achieve the purpose of reducing weight combining strength toughness two alloys. effects oscillating frequency weld formation, grain structure mechanical properties were mainly investigated numerical simulation. asymmetric morphology influence formation by distribution, temperature histories keyhole depth. increase...
304 austenitic stainless steel with a thickness of 7.5 mm was welded by high-power fiber laser welding. The effects main welding parameters, including power, speed, and defocusing amount, on weld formation were studied in detail. parameters optimized according to the formation. On this basis, microstructure mechanical properties joints further analyzed. results showed that depression hump defects easily occurred once penetrated. could be effectively avoided when two specific adopted: namely,...
Abstract Tungsten carbide was manufactured by picosecond laser in this study. Shapes of the ablated craters evolved from parabolic‐like (less than 10 pulses) to Gaussian‐like (more 500 as pulse number increased. The shape changes were closely associated with discontinuous diameter expansion crater. To explain these phenomena, two thresholds identified: an upper threshold 0.129 J/cm 2 and a lower 0.099 . When energy exceeded threshold, ablation occurred under laser‐energy‐dominated mode. fell...
GaN is characterized by high electron velocity, electric field, and excellent thermal conductivity, making it highly relevant across various fields. In this study, an ultrafast laser with a pulse duration of 8 ps wavelength 532 nm was used to explore GaN’s ablation characteristics its underlying mechanisms. Five distinct structures were identified, including shallow incomplete ablation, deep complete edge breakage, substrate damage, successful all which linked specific parameters. Two...
The overlap joints of 6061 aluminium alloy and galvanized DP590 steel were made by the laser welding-brazing technology. Effects Si contents in filler wires on weld appearances, microstructure mechanical properties studied. well-formed could be obtained under optimized parameters. interfacial intermetallic compounds (IMCs) divided into five zones from side to Al side: R-IMCs G-IMCs mainly composed Fe(Al,Si) phases, S-IMCs consisted Fe2(Al,Si)5 P-IMCs up Fe(Al,Si)3 phases Fe2Al8Si formed at...
In this study, the induction preheating was adopted to improve microstructure and performance of high strength low alloy steel butt joints with 20 mm thickness. The could effectively change thermal cycles interlaminar zones, which beneficial restrain formation martensite inhibit microstructural inhomogeneity. As temperature increased, cooling rates zones slowed down. a consequence, time for carbon diffusion outward austenite transformation inhibited ferrite promoted in zone, led remarkable...