A5026862691- Aluminum Alloys Composites Properties
- Advanced ceramic materials synthesis
- High Temperature Alloys and Creep
- Surface Treatment and Residual Stress
- Microstructure and Mechanical Properties of Steels
- Hydrogen embrittlement and corrosion behaviors in metals
- Thermal properties of materials
- Metal and Thin Film Mechanics
- Microstructure and mechanical properties
- High-Temperature Coating Behaviors
- Advanced materials and composites
- Corrosion Behavior and Inhibition
- Welding Techniques and Residual Stresses
- Nuclear Materials and Properties
- Erosion and Abrasive Machining
- Metal Alloys Wear and Properties
- Advanced Surface Polishing Techniques
- Advanced Materials Characterization Techniques
- Aluminum Alloy Microstructure Properties
- Non-Destructive Testing Techniques
- Power Transformer Diagnostics and Insulation
- Fatigue and fracture mechanics
- Fire effects on concrete materials
- Magnetic and transport properties of perovskites and related materials
- Power System Reliability and Maintenance
University of Science and Technology Beijing
2016-2024
State Grid Corporation of China (China)
2024
Jiangnan University
2021
China Iron and Steel Research Institute Group
2020
Harbin University of Science and Technology
2012
Hebei Normal University
2007
The strain-induced martensitic transformation (α′-martensite) and residual stress (RS) introduction in the gradient nanostructured (GNS) austenitic stainless steel have been extensively reported last three decades, however, their correlation is still unclear. Here, XRD, EBSD, ECCI TEM were used to study RS distribution martensite behaviors a GNS SS304 fabricated by ultrasonic surface nanocrystallization modification. We found non-linear relationship between magnitude of fraction...
In response to the rapid development of high-performance electronic devices, diamond/Al composites with high thermal conductivity (TC) have been considered as latest generation management materials. This study involved fabrication reinforced Ti-coated diamond particles using a liquid–solid separation (LSS) method. The interfacial characteristics both without and Ti coatings were evaluated SEM, XRD, EMPA. results show that LSS technology can fabricate Al4C3, hence guaranteeing excellent...
A widely used approach for extending the fatigue life of engineering steels is through introduction compressive residual stress (CRS). The thermal stabilities introduced may determine their effectiveness in high-temperature application, which had been extensively studied by ex-situ technology past two decades. Here, in-situ heating techniques synchrotron XRD, XRD and TEM were to study evolution CRS corresponding microstructural a gradient nanostructured (GNS) austenitic stainless steel. As...
Abstract P91 steel is an important steam pipe for ultra-supercritical power plants due to its excellent creep strength, which generally has a design life of 100,000 h. Here, we found significant aberrant decrease in the rupture main elbow after only 20,000 h service. The microstructure piece exhibited decomposition martensitic lath into blocky ferrite recrystallization and accumulation M 23 C 6 as well formation Laves phase along prior austenitic grain boundaries, resulting hardness that no...
Fe-doped TiO2 rutile thin films were fabricated by reactive magnetron sputtering on SiO2 substrates under different growth conditions, and the structure magnetism have been systematically investigated. X-ray diffraction data, atomic force microscopy, magnetic microscopy confirm absence of metallic Fe clusters or any other impurity phase. The divalent ion was identified x-ray photoelectron spectra. Room-temperature ferromagnetism has observed for all FexTi1−xO2 (x=3%–15%) films. However,...
The coefficients of thermal expansion (CTE) and conductivity (TC) are important for heat sink applications, as they can minimize stress between substrates chips prevent failure from accumulation in electronics. We investigated the interface behavior manufacturing diamond/Cu composites found that have much lower TCs than copper due to their low densities. Most defects, such cavities, form around diamond particles, substantially decreasing high TC reinforcements. However, measurement results...
Diamond/Cu composites are widely studied as a new generation of thermal management materials in the field electronic packaging and heat sink materials. The surface modification diamond can improve interfacial bonding between Cu matrix. Ti-coated diamond/Cu prepared via an independently developed liquid-solid separation (LSS) technology. It is worth noting that there obvious differences for roughness diamond-{100} -{111} face by AFM analysis, which may be related to energy different facets....
Fe-20Cr-25Ni-Nb steel is an important material for developing highly compact and efficient nuclear power systems by using the supercritical CO2 Brayton cycle. The in-core materials should possess excellent oxidation resistance in a high-temperature environment. In this work, new 20Cr-25Ni-Nb with minor Mo addition was developed, its behavior investigated pure environment at 650 °C under 3.5 MPa. experimental results show that kinetics of steels followed parabolic law test time, process...
Medium-carbon, high-strength steels are widely used in the field of hydrogen energy because their good mechanical properties, and they can be readily tailored by heat treatment processes such as normalizing–tempering (N&T) quenching–tempering (Q&T) methods. The embrittlement (HE) susceptibility a medium-carbon, steel was investigated utilizing microstructural characterization with scanning electron microscopy (SEM), backscatter diffraction (EBSD) technique, transmission (TEM). A...
Moisture content (MC) is an important indicator for evaluating the quality of agricultural products during drying. The rapid detection MC helps to realize optimization configuration and online adjustment drying process parameters, ensuring final product achieving green efficient As effective tool nondestructive quality, use hyperspectral/multispectral image (HSI/MSI) evaluation products/food has been extensively studied. However, how extract features from HSI/MSI build a function...
Surface mechanical attrition treatment (SMAT) is a unique method for the nanoscale refinement of surface grain structure without changing alloy chemical composition. Herein, effect SMAT on corrosion resistance 316L stainless steel in artificial sea water used as corrosive medium has been investigated. As result, passive film and nanostructured layer were formed SMAT-processed surface, which considerably increased its during short-term testing. However, after long-term exposure to medium,...
The sucker rod is an extremely important equipment in oil exploitation, but with the deepening and harsh environment of petroleum well, higher requirements are put forward for strength corrosion resistance rod. most commonly used steel H grade rods 4330 steel. However, it has characteristics such as high cost relatively low sulfide stress cracking resistance. Thus, a novel composition 0.2 wt.% Cu 1.2 Ni was designed. Normalizing + tempering (NT) quenching (QT) heat treatment were optimized...
The electronic packaging shell, the necessary material for hermetic of large microelectronic device chips, is made by mechanical processing a uniform block. However, property variety requirements at different positions shell due to performance have not been solved. An independently developed liquid–solid separation technology applied fabricate diamond/Al composites with graded distribution diamond particles. content decreases along gradient from bottom which houses top wall, welded cover...