A5101701959- Microstructure and Mechanical Properties of Steels
- Hydrogen embrittlement and corrosion behaviors in metals
- Metal Alloys Wear and Properties
- Metallurgy and Material Forming
- Magnetic Properties and Applications
- Welding Techniques and Residual Stresses
- Industrial Vision Systems and Defect Detection
- Fatigue and fracture mechanics
- Dental Implant Techniques and Outcomes
- Bone Tissue Engineering Materials
- Microstructure and mechanical properties
- Mechanical stress and fatigue analysis
- Non-Destructive Testing Techniques
- Titanium Alloys Microstructure and Properties
- Metal Forming Simulation Techniques
- High Temperature Alloys and Creep
- Fluid Dynamics and Vibration Analysis
- Fire effects on concrete materials
- Cellular and Composite Structures
- Advanced Control Systems Optimization
- Corrosion Behavior and Inhibition
- Advanced Materials Characterization Techniques
- Tribology and Lubrication Engineering
- Conducting polymers and applications
- Laser and Thermal Forming Techniques
University of Science and Technology Beijing
2012-2024
Huaneng Clean Energy Research Institute
2023
North University of China
2020
Peking University
2016
The ductile-to-brittle transition (DBT) is an important characteristic that restricts the use of body-centered cubic metals as structural materials at low temperatures. This study shows a design heterogenous lamellar microstructure (HLM), which implemented in low-density steel to promote occurrence delamination parallel direction main crack propagation, and result toughening effect. When Charpy impact test temperature was reduced from room −196°C, absorbed energy displayed linear decline....
The effects of prior austenite grain (PAG) refinement on the mechanical properties bainitic/martensitic steels not only come from itself, but also have more complex by affecting substructure formed coherent transformation. In this study, samples a low-alloy steel were water quenched different austenitizing temperatures and microstructures with PAG sizes obtained. Electron back-scattered diffraction was used to characterize microstructure types boundaries identified quantitatively analyzed....
In the present study, we predict elastic modulus of triply periodic minimal surface (TPMS) structures for biomedical material, titanium, using three different machine learning (ML) methods (Random Forest, XGBoost and Adaboost). A dataset is generated from finite element analysis, which model has large number lattice-cells (4 × 4 lattice-cells). terms manufacturing features including unit configuration two structural parameters (k C), moduli TPMS are calculated. It was found that all have...
Coherent transformation is considered to be an effective approach refine the microstructure and enhance toughness of structural steels. However, there are gaps in knowledge on key aspects that govern toughness. In this regard, a low alloyed experimental steel with lean chemistry was subjected simple heat treatment involving austenitization at different temperatures, followed by quenching tempering obtain bainitic microstructures boundary composition. The four steels characterized electron...
To investigate whether a different implant geometry with the same potential contact surface area (PCSA) affects principal stress and strains in bone.Three-dimensional finite-element models were created single endosseous embedded bone. The irregular (IR) dental root-analog regular (R) cylindrical PCSA 350 mm modeled, keeping size of thinnest wall 0.8 mm, bone 1 mm. or abutments either 4.5 lower than platform implants 5 higher implants, both taper 1.44°. A 100 N vertical vertical/50 horizontal...
A novel YOLOv5 network is presented in this paper to quantify the degree of defects continuously cast billets. The proposed addresses challenges posed by noise or dirty spots and different defect sizes images these CBAM-YOLOv5 integrates channel spatial attention Convolutional Block Attention Module (CBAM) with C3 layer structure better fuse information, focus on target, improve network’s detection capability, particularly for levels segregation. As a result, feature pyramid improved. map...
The aim of this study was to evaluate cross-sectional area the abutments, strain distribution in periimplant bone, stress abutments and dental root-analog implant by different abutment design under loading conditions, through three-dimensional finite element analysis.Two models were established. Two types oval cross section (OCSA) circular (CCSA) designed, keeping size thinnest wall 0.75 mm. load applied each model: 100 N vertical (V), vertical/50 horizontal (VH). biomechanical behaviors...
Herein, the start laminar cooling temperature to obtain different volume fractions of ferrite and bainite/martensite is optimized. Lower yields a higher fraction also decreases transformation bainite/martensite. The yield strength experimental dual‐phase steel at 600 °C increases from ≈484.8 ≈526.2 MPa by decreasing 650 °C. To understand effect microstructure, dislocation density, precipitates, Young's modulus elevated are statistically analyzed. A machine learning method, known as gradient...
The traditional detection method of the center segregation is limited to quantitatively evaluate quality steel casting slab, as it observed in a 2D plane. Herein, 3D reconstruction slab proposed. First, ultrasonic scanning technology used scan faults layered and hot‐acid‐etched samples obtain sequence images. Second, structures defects each slice are segmented by an iterative threshold method. Then, image distortion corrected aligned same physical space. Finally, structure reconstructed. A...