A5082442571- Aluminum Alloy Microstructure Properties
- Solidification and crystal growth phenomena
- Ferroelectric and Piezoelectric Materials
- High Temperature Alloys and Creep
- Multiferroics and related materials
- Magnetic Properties and Applications
- Dielectric properties of ceramics
- Microstructure and mechanical properties
- Surface Roughness and Optical Measurements
- Metallic Glasses and Amorphous Alloys
- Copper Interconnects and Reliability
- Silicon Carbide Semiconductor Technologies
- Metallurgy and Material Forming
- High-Temperature Coating Behaviors
- Heat transfer and supercritical fluids
- Advanced materials and composites
- Magnetic Properties of Alloys
- Semiconductor materials and devices
- Metallurgical Processes and Thermodynamics
- Nuclear Engineering Thermal-Hydraulics
- Intermetallics and Advanced Alloy Properties
- Nonlocal and gradient elasticity in micro/nano structures
- Heat Transfer and Boiling Studies
- High Entropy Alloys Studies
- Microstructure and Mechanical Properties of Steels
Xihua University
2024
North University of China
2018-2022
Chongqing University of Science and Technology
2015-2018
The core-shell structure precipitatates of Fe-xCu-3.0Mn-1.5Ni-1.5Al alloys under internal and external strain was investigated by using a multicomponent continuous phase field model based on Gibbs free energy sub regular solution. Results show that the early cluster nuclei are not pure Cu, Mn/Ni/Al also gather in same position Cu rich nuclei, resulting four structures precipitation. In absence strain, morphology precipitates is mainly determined interfacial energy, intrinsic elastic...
Grain boundary affects the microstructure of metal material, and thus further its macroscopic properties. As is well known, under action applied stress, grain migrates. The structures arrangements dislocations at different misorientation angles are very different, which macrophysical chemical properties crystal. Therefore, it great theoretical practical significance to study dislocation structure reaction mechanism misorientations for studying material properties.The phase field crystal...
In this study, a quenching experiment was conducted at atmospheric pressure to investigate the flow and heat-transfer characteristics of cylindrical rods made from SS, FeCrAl, Zr-4 under various subcooling degrees (ΔTsub). The inverse heat-conduction problem (IHCP) method image-processing technique were utilized determine surface temperature heat flux, vapor film thickness, quench front propagation. results show that smaller solid kρcp larger ΔTsub result in relatively more efficient boiling...
The BiFeO3 (BFO) thin films were prepared on Pt(111)TiO2/SiO2/Si substrates by the sol-gel method at different annealing temperatures. crystalline structure and domain configuration of BFO have been investigated X-ray diffraction piezoelectric force microscope (PFM), respectively. From patterns, there are less impurity peaks when annealed 600 °C. PFM images, polarization is random grain size decreases with increasing temperature. It found that possibility single-domain formation increased...
The early stages of precipitation process the γ' phase a Ni–Al–Ti alloy are investigated by microscopic phase-field and first-principles calculations. simulated results indicate that pre-precipitate with L1 0 structure appears before 2 ordered phase, then this metastable gradually transforms to phase; finally, precipitated is composed γ matrix phase. occupation probabilities Al, Ni, Ti atoms also illustrate formation its situ conversion constituted complicated compound Ni 3 (AlTi). Through...
Low carbon steel plays an important role in many applications due to its high strength. Its strength comes from the strengthening effect of nano-Cu-rich phase precipitates. In order effectively adjust microstructure Cu-rich precipitates and obtain Fe-Cu-based with best properties by adding different alloying elements (Mn, Al), it is necessary understand precipitation process Cu particles. this paper, based on Ginzburg-Landau theory, previous field model modified, continuous method used...
采用基于密度泛函理论的第一性原理方法，研究了压力作用下Mg2Si和Mg2Ge的结构、弹性和热力学性质。计算结果表明：0 GPa压力作用下两者的晶格参数与实验值以及其他理论值吻合较好，且相对晶格常数a/a0和晶胞体积V/V0均随压力的增大而减小；在0~25 GPa压力作用下，Mg2Si和Mg2Ge相体模量B、剪切模量G、杨氏模量E均随压力的增大而增大，材料的刚度和塑性均增强，当压力达到15 GPa时，材料由脆性转变为延性。最后借助准谐德拜模型和Gibbs软件，研究了温度与压力对Mg2Si和Mg2Ge的德拜温度、体模量、热容和热膨胀系数的影响。