A5087590151- High Entropy Alloys Studies
- High Temperature Alloys and Creep
- Intermetallics and Advanced Alloy Properties
- Advanced Materials Characterization Techniques
- High-Temperature Coating Behaviors
- Microstructure and Mechanical Properties of Steels
- nanoparticles nucleation surface interactions
- Advancements in Battery Materials
- Aluminum Alloys Composites Properties
- Advanced Welding Techniques Analysis
- Magnetic properties of thin films
- Advanced materials and composites
- Chemical Thermodynamics and Molecular Structure
- Titanium Alloys Microstructure and Properties
- Metal and Thin Film Mechanics
- Machine Learning in Materials Science
- Additive Manufacturing Materials and Processes
- Aluminum Alloy Microstructure Properties
- Multiferroics and related materials
- Iron oxide chemistry and applications
- Microstructure and mechanical properties
- High-pressure geophysics and materials
- Advanced Chemical Physics Studies
- Advanced Battery Materials and Technologies
- Quasicrystal Structures and Properties
École Polytechnique Fédérale de Lausanne
2022-2023
The Ohio State University
2017-2022
Shanghai Jiao Tong University
2014
Harbin Institute of Technology
2003
Banaras Hindu University
1973
Abstract Catastrophic accidents caused by fatigue failures often occur in engineering structures. Thus, a fundamental understanding of cyclic-deformation and fatigue-failure mechanisms is critical for the development fatigue-resistant structural materials. Here we report high-entropy alloy with enhanced life ductile-transformable multicomponent B2 precipitates. Its are revealed real-time in-situ neutron diffraction, transmission-electron microscopy, crystal-plasticity modeling, Monte-Carlo...
The search for new high-temperature alloys that can enable higher-efficiency/lower-emissions power generation has accelerated with the discovery of body-centered cubic (bcc) refractory High Entropy Alloys (HEAs). These many-component, non-dilute in Cr-Mo-W-V-Nb-Ta-Ti-Zr-Hf-Al family hold potential combining high strength and thermodynamic stability at temperature low density room-temperature ductility, but searching immense compositional space is daunting. Here, very recent theories expanded...
A statistical-mechanics analysis is used to create analytic estimates for the short-range order (SRO) parameters in FCC and BCC solid solution alloys as a function of composition temperature. As classic quasi-chemical method, assumes pair interactions among atoms at different distances partitions entire crystal into set identical independent clusters that are then treated like molecules gas. This enables development probabilities govern SRO. For binary ternary alloys, increasingly complex...
To date, magnetic proximity effect (MPE) has only been conclusively observed in ferromagnet (FM) based systems. We report the observation of anomalous Hall and anisotropic magnetoresistance angular dependent (ADMR) measurements Pt on antiferromagnetic (AF) $\alpha$-Fe$_2$O$_3$(0001) epitaxial films at 10 K, which provide evidence for MPE. The N\'eel order $\alpha$-Fe$_2$O$_3$ induced magnetization show a unique ADMR compared with all other FM AF A macrospin response model is established can...
Mo-Ti alloys form solid solutions over a wide range of compositions, with lattice misfit parameters increasing significantly titanium content. This indicates strong increase in the critical stress for edge dislocation motion. Here, we probe transition from screw to dislocation-dominated strengthening content up 80 at%. The were scale-bridging characterized isolate impact substitutional solution strengthening. Mechanical testing yielded no significant influence grain boundaries or...
Abstract We propose a Multi-Cell Monte Carlo algorithm, or (MC) $${}^{2}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup></mml:math> , for predicting stable phases in chemically complex crystalline systems. This algorithm takes advantage of multiple cells to represent possible phases, while eliminating the size and concentration restrictions previous counterparts. Free atomic transfer among is achieved via...
Transition metal phosphorus trisulfide materials have received considerable research interest since the 1980-1990s as they exhibit promising energy conversion and storage properties. However, mechanistic insights into Li-ion in these are poorly understood to date. Here, we explore lithiation of NiPS3 material by employing situ pair-distribution function analysis, Monte Carlo molecular dynamics calculations, a series ex characterizations. Our findings elucidate complex ion insertion around...
We propose a Multi-Cell Monte Carlo algorithm, or (MC)^2, for predicting stable phases in chemically complex crystalline systems. Free atomic transfer among cells is achieved via the application of lever rule, where an assigned molar ratio virtually controls percentage each cell overall simulation, making (MC)^2 first successful algorithm simulating phase coexistence solids. During this method, all energies are computed direct Density Functional Theory calculations. test method by prediction...
A study of the x-ray powder pattern resulting from a cold-worked hexagonal close-packed Au–Cd–In alloy containing 17.5 at.% Cd and 5.0 In has been made. Quantitative analysis observed anomalous peak broadening, shifts, asymmetry in shows evidence for only three nine faults, which have earlier postulated this structure, namely intrinsic-ch, intrinsic-h, intrinsic-2h with respective fault probabilities αch=0.045, αh=0.036, α2h=0.002.
This work investigated two similar polycrystalline alloys, differing by only 1 at% Nb content, which elucidated its effect on local phase transformation strengthening during high temperature creep. Compression creep tests were conducted at 750 °C and 600 MPa to 0.5% strain, resulting in deformation dominated microtwinning. Higher alloy RRHT5 exhibited superior strength RRHT3 terms of minimum rate. The microstructures characterized via atomic resolution scanning transmission electron...