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Meeting Materials Science & Technology 2020
Symposium Micro- and Nano-Mechanical Behavior of Materials
Presentation Title Atomistic Simulations of Collisions between SiC Nanoparticles
Author(s) Kevin Walier Kayang, Alexey N. Volkov
On-Site Speaker (Planned) Kevin Walier Kayang
Abstract Scope Interaction of SiC nanoparticles in the head-to-head and oblique collisions is studied in atomistic simulations for various nanoparticle size, geometric collision parameter, and temperature. The simulations are performed for both crystalline and amorphous nanoparticles in a broad range of nanoparticle velocities, from those that result in adhesion of nanoparticles to those that induce partial melting or fragmentation of nanoparticles. The propagation of the shock waves and phase transformations in the nanoparticles induced by high-velocity impact are studied. The impact-induced deformation of nanoparticles is compared with the deformation observed during uniaxial quasi-static compression of the same nanoparticles. The center-of-mass velocities, angular velocities, and temperatures of individual particles are obtained as functions of time and are used to calculate values of normal and tangential accommodation coefficients of the nanoparticle relative velocity. The simulation results are used to obtain maps of collision outcome on the plane of relative velocity and geometric collision parameter.


An Integrated In Situ Solution for Automated Material Testing in SEM
Atomistic Simulations of Collisions between SiC Nanoparticles
Characterization of Dislocation Avalanches by In Situ Micropillar Compression Tests with Simultaneously Detected Acoustic Emission
Characterization of Electroless Copper Deposits on Electrospun PAN Fibers in Aligned and Random Configurations
Characterization of Fatigue Damage Behavior in Unidirectional Carbon Fiber Reinforced Plastic Laminates
Computer Vision Approach to Study Surface Deformation of Materials
Cyclo[18]carbon as an Ultra-flexible Material
Diffusion Induced Abnormal Softening Behaviors in Nanocrystals
Effects of Testing Temperature and Sample-size on Tensile Deformation of Metallic Glass
Exploring Small-scale Quasicrystal Plasticity in Unknown Temperature Regimes and Compositions
Gradatim Ferociter: Exploring the Grain Size Stability of Heterogeneous Copper in Thermal, Mechanical and Radiation Environments
In Situ Nanomechanical Testing of Piezoresistive Materials
In Situ Nanomechanics of Ni-based Superalloys and Bond Coating: Effect of Temperature
Introductory Comments: Micro- and Nano-Mechanical Behavior of Materials
Mechanical Behavior of Resilin-mimicking Materials
Mechanical Properties of Hybrid Core-shell Ceramic Nanoparticles
Microparticle Impacts at Supersonic Speeds, and the Role of Surface Layers
Persistent, Inelastic Cycling Behavior in Rare Earth Orthophosphate Ceramics
Processing, Characterization, and Modeling of Nano-twinned Alloys: Understanding the Role that Controlling and Tuning of Microstructure has in Dislocation-twin Interactions
Quantitative Evaluation of Large Nanoindentation Data Sets
Small-Scale Mechanical Behavior of Ion-irradiated Amorphous Metals versus Multi-Principal Alloys
Spatial-temporal Investigation of Shear Bands in Bulk Metallic Glasses
Temperature-dependent Intermittent Plasticity of Nb Microcrystals
Time-resolved Atomic-scale Observations of Deformation and Fracture of Nanostructured Materials
Twinning and Detwinning in Small-sized Crystals

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