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WEB Nanoindentation of Al: Molecular dynamics simulations and dislocation dynamics simulations

Thursday (02.07.2020)
09:54 - 09:54 Poster Room
Part of:
- Poster *web*Simulation of Spinning Processes with Experimental Validation 1 Stefan Hermanns
- Poster *web*Screening Solubility-Enhancing Coformers in Amorphous Solid Dispersions: a Group Contribution based Miscibility Method 1 Milad Asgarpour Khansary
- Poster *web*Thermal emission of colloid-based plasmonic structures for radiative cooling 1 Kishin Matsumori
- Poster *web*Free energies of segregation: thermodynamic integration at grain boundaries using pyiron 1 Dr. Liam Huber
- Poster *web*Effective mobility of BCC dislocations in two-dimensional discrete dislocation plasticity 1 Tarun Katiyar
- Poster TBA -
- Poster *web*Computer Aided Reliability by additive manufacturing of components with locally varied properties 1 Dr. Iliya Radulov
- Poster *web*Numerical Study of Solidification in Metallic Droplet 1 Dandan Yao
- Poster TBA -
- Poster TBA -
- Poster TBA -
- Poster TBA -
- Poster *web*Thermodynamic assessment and modelling of interactions in liquid Ni alloys/oxide systems 1 Saverio Sitzia
- Poster *web*The limiting effect of interfacial band alignment on efficiency of earth-abundant chalcogenide photovoltaic materials 1 Dr. Elaheh Ghorbani
- Poster *web*HMC hub matter for as a resource for materials research in the German research landscape 1 Dr. Oonagh Mannix
- Poster *web*Nanoindentation of Al: Molecular dynamics simulations and dislocation dynamics simulations 1 Sa-Ly Dang
- Poster *web*Rational Design of Metal Anchored Carbon Quantum Dots as Optimal Efficient Electrocatalysts for Hydrogen production Using Machine Learning and High-throughput Experimentation 1 Yujin Chae
- Poster *web*Correlating Raman Spectra of Ibuprofen, Nicotinamide and Their Dimers 1 Milad Asgarpour Khansary
- Poster *web*High Throughput Screening for Electrochemical Nitrogen Reduction for the Ammonia Synthesis via Machine Learning 1 JaeHyoung Lim
- Poster Thermodynamic investigation of oxidation behavior of NiAl intermetallics with embedded Cr and Mo 1 Golnar Geramifard

Session -M: Modelling, Simulation, and Data
Belongs to:
Topic X: Poster Session

Nanoindentation is one of the widely used methods to explore the mechanical response of materials. The deformation of surfaces is measured to predict the hardness which depends on ductility and strength of the testing material. The nucleation and mobility of dislocations in metallic materials during nanoindentation plays an important role. Therefore, it is crucial to understand plastic deformation at different time and length scales. In this work, we simulate nanoindentation into single crystalline aluminum by means of large-scale molecular dynamics simulations and dislocation dynamics simulations. Statistically equivalent dislocation structures for both methods are generated taking into account identical initial conditions. The mechanical properties of the material such as the hardness will be analyzed for different process parameters. From the atomistic data, nucleation rates will be determined, which will be transferred to the dislocation simulations. Thus, physically correct nucleation rates can be implemented in dislocation simulations, adequately describing the dynamics of dislocations.

Sa-Ly Dang
Clausthal University of Technology
Additional Authors:
  • Prof. Dr. Nina Gunkelmann
    Institute of Applied Mechanics TU Clausthal