A5103187866- Metallic Glasses and Amorphous Alloys
- Glass properties and applications
- Material Dynamics and Properties
- Phase-change materials and chalcogenides
- Natural Fiber Reinforced Composites
- Theoretical and Computational Physics
- Nanocomposite Films for Food Packaging
- 2D Materials and Applications
- High Temperature Alloys and Creep
- Advanced Cellulose Research Studies
- Additive Manufacturing and 3D Printing Technologies
- Boron and Carbon Nanomaterials Research
- biodegradable polymer synthesis and properties
- Metallurgy and Material Forming
- Ion-surface interactions and analysis
- MXene and MAX Phase Materials
- Wood Treatment and Properties
- Fatigue and fracture mechanics
- Quasicrystal Structures and Properties
Xi'an University of Technology
2023-2024
United States Department of Energy
2019
Ames National Laboratory
2018-2019
Iowa State University
2019
Shanghai Jiao Tong University
2019
Tsinghua University
2014-2018
Northwestern Polytechnical University
2013
In glassy materials, the Johari-Goldstein secondary (β) relaxation is crucial to many properties as it directly related local atomic motions. However, a long-standing puzzle remains elusive: why some glasses exhibit β relaxations pronounced peaks while others present unobvious excess wings? Using microsecond atomistic simulation of two model metallic (MGs), we demonstrate that such difference associated with number string-like collective jumps. Relative wings, find MGs having contain larger...
Relaxation processes significantly influence the properties of glass materials. However, understanding their specific origins is difficult; even more challenging to forecast them theoretically. In this study, using microseconds molecular dynamics simulations together with an accurate many-body interaction potential, we predict that Al_{90}Sm_{10} metallic would have complex relaxation behaviors: addition main (α) relaxation, (i) shows a pronounced secondary (β) at cryogenic temperatures and...
Abstract The effects of iron oxide red pigment, organic 254 titanium white and carbon black pigment on the properties wood fiber (WF)reinforced high‐density polyethylene (HDPE) composites under outdoor aging conditions were investigated. results indicate addition pigments in process has a certain physical protection effect composites, effectively preventing damage ultraviolet rays WF/HDPE mechanical experiments show that protect more obviously first 3 months. Among them, had best...
An interatomic potential was constructed for the Ni-Zr-Mo ternary metal system with newly proposed long-range empirical formulism, which has been verified to be applicable fcc, hcp and bcc transition metals their alloys. Applying potential, molecular dynamics simulations predict a hexagonal composition region within metallic glass formation is energetically favored. Based on simulation results, driving force amorphous phase derived, thus an optimized pinpointed Ni45Zr40Mo15, of could most...
Abstract Based on the newly constructed n -body potential of Ni-Ti-Mo system, Molecular Dynamics and Monte Carlo simulations predict an energetically favored glass formation region optimal composition sub-region with highest glass-forming ability. In order to compare producing techniques between liquid melt quenching (LMQ) solid-state amorphization (SSA), inherent hierarchical structure its effect mechanical property were clarified via atomistic simulations. It is revealed that both exhibit...
Abstract Agricultural waste fiber has huge utilization potential due to its abundant sources, renewability, and low recycling costs. In this process, up 30 wt% tobacco stalk (TSF) was compounded with high‐density polyethylene (HDPE) interfacial modifiers using a grinder, melting‐blending mixer, injection molding machine prepare environmentally friendly TSF/HDPE composites, which have excellent mechanical properties good water resistance. On basis, the compatibility between TSF HDPE enhanced...
Through a variety of local structural analysis methods, it is revealed that the Ni<italic>x</italic>Zr<sub>100–x</sub>MGs exhibit combination icosahedral-, fcc- and hcp-like configurations, while icosahedra or distorted cover dominant fraction.
In the present study, atomistic simulation reveals that microscopic mechanism of relaxation dynamics in amorphous materials is governed by activating atoms jump more than half average nearest neighbor distance within a given time. Based on unsupervised machine-learning algorithm, hierarchical clustering analysis shows are excited cooperative and avalanche-like model to form units. Correlation suggests large free volumes facilitate formation atoms. Interestingly, fractal correlation found...
Molecular dynamics simulation with well-developed EAM potentials was carried out to investigate the transport properties and local atomic structure of Cu–Zr Ni–Zr metallic glasses supercooled liquids.
A negative correlation of glass formation ability (GFA) with the critical dosage (<italic>D</italic><sub>c</sub>) is first proposed for amorphous alloys formed by ion beam mixing (IBM), <italic>i.e.</italic> lower <italic>D</italic><sub>c</sub> better GFA, implying that could serve as a GFA indicator.
Ab initio calculations were conducted to assist the construction of n-body potential Ti-Nb-Al ternary metal system. Applying constructed interatomic potential, molecular dynamics and Monte Carlo simulations performed predict a quadrilateral composition region, within which metallic glass was energetically favored be formed. In addition, amorphous driving force those predicted possible glassy alloys derived an optimized around Ti15Nb45Al40 pinpointed, implying that this alloy easier obtained....