A5102753826- Intermetallics and Advanced Alloy Properties
- High Temperature Alloys and Creep
- Microstructure and Mechanical Properties of Steels
- MXene and MAX Phase Materials
- Hydrogen embrittlement and corrosion behaviors in metals
- Titanium Alloys Microstructure and Properties
- Additive Manufacturing Materials and Processes
- Advanced materials and composites
- Conducting polymers and applications
- Microstructure and mechanical properties
- Aluminum Alloy Microstructure Properties
- Nuclear Materials and Properties
- Hydrogen Storage and Materials
- Fusion materials and technologies
- Quasicrystal Structures and Properties
- Perovskite Materials and Applications
- Advanced Chemical Physics Studies
- High-Temperature Coating Behaviors
- nanoparticles nucleation surface interactions
- Advanced Fiber Optic Sensors
- Corrosion Behavior and Inhibition
- Advanced Materials Characterization Techniques
- High Entropy Alloys Studies
- Mechanical and Optical Resonators
- Metallurgical Processes and Thermodynamics
Xinjiang Uygur Autonomous Region Uygur Medicine Hospital
2025
Chinese Academy of Sciences
2012-2024
Jilin University
2023
Sun Yat-sen University
2018-2023
Northeast Electric Power University
2020-2023
First Hospital of Jilin University
2023
Beihang University
2009-2021
Zhengzhou University
2021
Institute of Metal Research
2020
Jinzhou Medical University
2010-2012
Abstract Traditional strengthening ways, such as strain, precipitation and solid-solution, come into effect by pinning the motion of dislocation. Here, through first-principles calculations we report on an extra-electron induced covalent mechanism, which alters chemical bonding upon introduction extra-valence electrons in matrix parent materials. It is responsible for brittle high-strength properties Al 12 W-type compounds featured typical fivefold icosahedral cages, are common quasicrystals...
Cyclic oxidation behavior at 750−850 °C was investigated for Ti42Al1.5Mn3Nb0.1B and Ti42Al1.5Mn- 3Nb0.1B0.2C0.2Si alloy by using scanning electron microscopy, probe microanalysis, backscatter diffraction X-ray analysis. The kinetic curves both alloys roughly follow a parabolic law, with the reduced rate constant compared to that of Ti42Al5Mn1W 800 °C. Well-protected oxide films are generated on all experimental temperatures, without cracking or spalling layer. addition Nb inhibits growth...
By over-aging at 900 °C and 1000 °C, a high volume-fraction of η-Ni3Ti phase was prepared in cast nickel-based superalloy with Ti/Al ratio. EBSD analysis shows that the η obeys SN-type orientation relationship γ matrix: <11 2¯ 0>η//<1 1¯ 0>γ, {0001}η//{111}γ. Four kinds variants 70.5° misorientation to each other are clarified. From η/γ interface structure as detected by HRTEM, thin plate-like morphology is attributed preferential growth incoherent {11 0}η//{1 0}γ interface. The formation...
By means of first-principles calculations coupled with the kinetic Monte Carlo simulations, we have systematically investigated effects dilute substitutional solutes on behaviors carbon in $\ensuremath{\alpha}$-Fe. Our results uncover following. (i) Without Fe vacancy interactions between most and are repulsive due to strain relief, whereas Mn has a weak attractive interaction its nearest-neighbor local ferromagnetic coupling effect. (ii) The presence all carbon. In particular, Mn-vacancy...
We propose a doping method by using [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) to fill the grain boundary interstices of methylammonium lead iodide (CH3NH3PbI3) perovskite for elimination pinholes. A sandwiched PCBM layer is also used between and TiO2 layers improve interfacial contact. By these two methods, fabricated solar cells show low hysteresis effect high current density, which result from improved compactness at boundaries surface interface TiO2/perovskite layers. The...
Organic-inorganic hybrid perovskite (OIHP) polycrystalline thin films are attractive due to their outstanding photoelectronic properties. The anti-solvent spin coating method is the most widely used synthesize these films, and residual strain inevitably originates evolves during process. However, this evolution induced by crystallization kinetics still poorly understood. In work, in situ ex synchrotron grazing-incidence wide-angle X-ray scattering (GIWAXS) utilized characterize distribution...
The research is focused on the hot deformation behavior of Ti–42Al–5Mn (at%) ingot produced by vacuum induction melting (VIM) and arc remelting (VAR). Firstly, isothermal compression test performed at temperatures between 1100 1300 °C with strain rates in range 0.001–10 s −1 . processing map plotted base strain–stress curves, constitutive equation also established regression analysis based experimental results. Secondly, different features β , γ phase, lath lamellae are investigated electron...
The influence of temperature on the deformation mechanisms a new Ni-based superalloy named K4800 containing 35 vol% γ' were investigated. We studied dependence and used alloying method to optimize high-temperature properties alloy. By analyzing slightly deformed microstructures, dominant alloy at yielding stage identified as: anti-phase boundary (APB) shearing from RT 600 °C, stacking faults (SFs) Orowan looping 600-800°C, looping/cross-slip/climbing above 800°C. found that it was activation...
The phase transformation behavior of Ti-42Al-5Mn (at.%) alloy from different regions with various cooling rates was investigated based on electron probe micro analyzer-backscattered electrons (EPMA-BSE). It is shown that β→α2′ takes place when this cooled at a high rate, such as water quenching (WQ), oil (OC), β single phase. With the decreasing rate to air (AC), restrained and β→γ promoted by forming γ platelets. room-temperature microstructure βo + α2 (WQ OC) (β α) dual-phase. However,...
First-principles determination of the vacancy formation enthalpies has been long-term believed to be highly successful for metals. However, a widely known fact is that various conventional density functional theory (DFT) calculations with typical semilocal approximations show apparent failures yield accurate Ag and Au. Recently, previously commonly assumed linear Arrhenius extrapolation determine at $T=0$ K from high-temperature measured concentration thermally created vacancies demonstrated...