A5011497586- Advanced Welding Techniques Analysis
- Semiconductor Quantum Structures and Devices
- Surface Treatment and Residual Stress
- Metal and Thin Film Mechanics
- Welding Techniques and Residual Stresses
- Semiconductor Lasers and Optical Devices
- Metal Alloys Wear and Properties
- Aluminum Alloy Microstructure Properties
- Aluminum Alloys Composites Properties
- Photonic and Optical Devices
- Cellular and Composite Structures
- Metal Forming Simulation Techniques
- High-Velocity Impact and Material Behavior
- Spectroscopy and Laser Applications
- High Entropy Alloys Studies
- Titanium Alloys Microstructure and Properties
- Erosion and Abrasive Machining
- Manufacturing Process and Optimization
- Microstructure and Mechanical Properties of Steels
- Bone Tissue Engineering Materials
- Intermetallics and Advanced Alloy Properties
- Powder Metallurgy Techniques and Materials
- Laser and Thermal Forming Techniques
- Scheduling and Optimization Algorithms
- Spectroscopy and Quantum Chemical Studies
Zhengzhou University of Light Industry
2024
University of Science and Technology of China
2022
Chinese Academy of Sciences
2022
Shanghai Jiao Tong University
2007-2019
Université Paris-Saclay
1994-1997
Centre National de la Recherche Scientifique
1994-1996
Effect of shot peening on residual stress and microstructure in the deformed layer Inconel 625 was investigated.Residual including domain size, micro strain dislocation density characterized by X-Ray diffraction method (XRD).The results showed that (SP) can signi cantly improve compressive hardness.Moreover, evaluation revealed smaller domains were re ned higher induced process.Thus a high near-surface layers induced.Dual process could optimize distribution both microstructure, which will...
The interdiffusion and thermal stability of narrow Si/SiGe multi-quantum wells is investigated by photoluminescence intersubband spectroscopy. exhibits a blueshift as function the temperature annealing. activation energy intermixing process coefficient are deduced from shift versus anneal. absorption measured photoinduced infrared spectroscopy on interdiffused samples for light polarized perpendicular (z polarization) or parallel (x to layer plane. In z polarization, annealed redshift...
Steady-state friction stir welding of 2014 Al alloy has been modelled using an Eulerian formulation that considers coupled viscoplastic flow and heat transfer near the tool. The model equations are solved finite element method to determine velocity field temperature distribution. grain size is related strain rate process in alloy, hardness found be essentially through Hall–Petch relationship zone. Using simulation results temperature, microhardness processing was predicted. It prediction...
Thermal relaxation behavior of residual stress and microstructure in the near-surface layers dual shot peened Inconel alloy 625 was investigated by X-ray diffraction method. Residual on top surface layer significantly relaxed first 15 min at elevated temperatures 500°C, 600°C, 700°C. However, there still high maximum compressive subsurface layers. The has contributed to thermally activated process. activation enthalpy Δ H m were calculated according Zener–Wert–Avrami method, values which...
Surface layers characteristics of pre-stressed shot peening Inconel 625 was investigated. Residual stress and microstructure in the deformation were characterized by X-Ray diffraction method.
Modulation of midinfrared beam by photoinduced intersubband absorption in undoped Si/SiGe quantum wells is investigated at normal incidence. Optical pumping interband transitions used to photocreate carriers the wells. The modulated transmission sample measured Fourier transform spectroscopy. Resonant dispersion associated with as well interference effects stack are clearly evidenced. It shown that phase modulation due refractive index variations may compensate for amplitude absorption....