A5101722503- Advanced ceramic materials synthesis
- Advanced materials and composites
- Aluminum Alloys Composites Properties
- Metal and Thin Film Mechanics
- Hydrogen embrittlement and corrosion behaviors in metals
- MXene and MAX Phase Materials
- Intermetallics and Advanced Alloy Properties
- Numerical methods in engineering
- Fatigue and fracture mechanics
- Microstructure and Mechanical Properties of Steels
- Non-Destructive Testing Techniques
- Corrosion Behavior and Inhibition
- Metal Alloys Wear and Properties
- Welding Techniques and Residual Stresses
- Microwave Dielectric Ceramics Synthesis
- Titanium Alloys Microstructure and Properties
- Nuclear materials and radiation effects
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Radiation Shielding Materials Analysis
- Nuclear Materials and Properties
- Boron and Carbon Nanomaterials Research
- Electromagnetic Simulation and Numerical Methods
- Ferroelectric and Piezoelectric Materials
- Advanced Numerical Methods in Computational Mathematics
Nanjing Tech University
2011-2024
North Minzu University
2010-2020
Central South University
2019
Hohai University
2019
Institute of High Performance Computing
2015-2016
Ningxia University
2015
University of Science and Technology
2012-2014
National University of Singapore
2011
Advanced Technology & Materials (China)
2010
Northwest Minzu University
2008
Mechanical properties of ferrite-pearlite low alloy steel are strictly determined by the ferrite and pearlite phases. In this present paper, evolution mechanical phases during spheroidization process is investigated using nanoindentation tests. Meanwhile, overall material were measured uniaxial tensile Test results indicate that with intensification layered cementite in pearlite, hardness yield strength phase decrease from 2.72 GPa to 1.73 411.5 GPa–256.1 GPa, respectively. However, exhibit...
Retrieval-augmented generation (RAG) demonstrates remarkable performance across tasks in open-domain question-answering. However, traditional search engines may retrieve shallow content, limiting the ability of LLMs to handle complex, multi-layered information. To address it, we introduce WebWalkerQA, a benchmark designed assess perform web traversal. It evaluates capacity traverse website's subpages extract high-quality data systematically. We propose WebWalker, which is multi-agent...
Effectively incorporating external knowledge into Large Language Models (LLMs) is crucial for enhancing their capabilities and addressing real-world needs. Retrieval-Augmented Generation (RAG) offers an effective method achieving this by retrieving the most relevant fragments LLMs. However, advancements in context window size LLMs offer alternative approach, raising question of whether RAG remains necessary effectively handling knowledge. Several existing studies provide inconclusive...
Oxygen boost diffusion (OBD) is an effective technology for improving the surface hardness of titanium and its alloys. In this present paper, effect temperature, vacuum condition roughness on oxygen Ti–6Al–4V alloy are studied. Test results show that OBD processing can be achieved at a low temperature over long times, as well high short times. By comparing efficiency mechanical properties, temperatures times preferred treatment. The influence conditions significant. Under degree conditions,...
Developing wearable articles with radiation protection safety and wear comfort in complex radiations is one of the urgent issues because flourishing nuclear technologies lead to increasing threats. However, current either shield neutrons or γ-rays display poor permeability air water vapor so on, which leads difficulty satisfying requirements radiations. Herein, surface modification techniques are applied construct sufficient hydrogen bonds between functional particles (B4C PbWO4) PVA...
Summary In this work, the extended finite element method (XFEM) is for first time coupled with face‐based strain‐smoothing technique to solve three‐dimensional fracture problems. This proposed method, which called smoothed XFEM here, expected combine both advantages of and technique. XFEM, arbitrary crack geometry can be modeled advance simulated without remeshing. Strain‐smoothing eliminate integration singular term over volume around front, thanks transformation into area integration....
In present research, CaCu3Ti4O12 (CCTO) giant dielectric ceramics were prepared by solid phase reaction sintering method. Two ways of used: 1) the temperature was risen to 1100oC directly, hold on 2, 3, 6, 8 hours respectively; 2) first, heated 1150oC, then decreased 1000oC immediately and 9 separately. The performance, properties impedance characteristics, as well relationship between characteristics investigated. experiments show that, density CCTO via first routine raised with increasing...
The present work determined the phase relations in Si–C–N–O–R systems, involving SiC–Si 3 N 4 –R 2 O , Si –SiO and (R = La,Gd,Y) systems by XRD analyses of solid‐state reacted samples from powder mixtures SiC R . Subsolidus diagrams these were presented summarized. Within in‐situ SiO impurity often cause formation some oxygen‐richer rare‐earth siliconoxynitrides, J‐, K‐, H‐phases extends ternary into quaternary ( ). In reaction partial participation mechanism siliconoxynitrides are discussed.
In this work, the advantages of face-based smoothing technique and extended finite element method (XFEM) are combined to develop a smoothed (FS-XFEM). By new method, arbitrary crack geometry can be modeled advance simulated without remeshing. At same time, integration singular term over volume around front eliminated induced by transformation into area integration. Numerical examples presented test accuracy convergence rate FS-XFEM. From results, it is clear that improve performance XFEM for...
Summary It is known that the explicit time integration conditionally stable. The very small step leads to increase of computational dramatically. In this paper, a mass‐redistributed method formulated in different numerical schemes simulate transient quasi‐harmonic problems. essential idea shift points away from Gauss locations computation mass matrix for achieving much larger stable increment method. For first time, it found stability problems proportional softened effect discretized model...
This paper studies the mechanical properties gradient in surface oxygen diffusion hardened (SODH) layer of Ti6Al4V alloy by four-point bending test, nano-indentation test and Vickers hardness measurement test. The relationships hardness-oxygen content hardness-yield stress were also investigated. Tests results show that outmost ≈25 μm deep has highest content, yield strength under compression monotonic loading but lowest cracking before yielding tension loading. However, from ≈50 position to...