By Mohammed Cherkaoui;Laurent Capolungo
Atomistic and Continuum Modeling of Nanocrystalline Materials
Atomistic and Continuum Modeling of Nanocrystalline Materialsdevelops a whole and rigorous cutting-edge research of the modeling of the mechanical habit of nanocrystalline (NC) fabrics. between different key issues the fabric specializes in the unconventional concepts used to foretell the habit of nanocrystalline fabrics. specific recognition is given to contemporary theoretical and computational frameworks combining atomistic and continuum techniques. additionally, the main correct deformation mechanisms governing the reaction of nanocrystalline fabrics are addressed and mentioned in correlation with to be had experimental info.
Drawing upon years of sensible and educational adventure and utilizing a variety of examples, authors Mohammed Cherkaoui and Laurent Capolungo conceal a large spectrum of fabric, together with:
New modeling suggestions and their strength purposes and attainable extensions, equivalent to molecular dynamics, pressure gradient established finite aspect simulations, and novel micromechanical schemes
Novel types describing plastic deformation methods taking place in nanocrystalline fabrics together with grain boundary dislocation emission
How to build and use a molecular dynamics code for sensible use within the modeling of NC fabrics
Atomistic and Continuum Modeling of Nanocrystalline fabricsis a must-have publication for researchers in addition to graduate scholars who're both coming into those fields for the 1st time, or these already undertaking examine during this quarter and desiring to expand their wisdom of nanocrystalline materials.
Read or Download Atomistic and Continuum Modeling of Nanocrystalline Materials: Deformation Mechanisms and Scale Transition PDF
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Extra info for Atomistic and Continuum Modeling of Nanocrystalline Materials: Deformation Mechanisms and Scale Transition
Acta Materialia 53, (2005) 26. O. L. C. Koch, Applied Physics Letters 85, (2004) 27. , B. Farrokh, and L. Takacs, Materials Science and Engineering: A 489, (2008) 28. R. W. Siegel. On the hardening and softening of nanocrystalline materials. Cancun, Mexico, (1993) 29. R. W. Siegel. Mechanical behavior of nanocrystalline Cu, Pd and Ag samples. New Orleans, LA, USA: TMS – Miner. Metals & Mater. , (1991) 30. , A. J. Benson, Progress in Materials Science 51, (2006) 31. , Progress in Materials Science 33, (1989) 32.
This is the case of the strain rate sensitivity discussed below. 38 2 Applications of Nanocrystalline Materials Also, as nanosized particles exhibit poor thermal stability and since grain boundaries in nanocrystalline materials are typically high-energy grain boundaries, a particular size effect in the thermal response of nanocrystalline materials is expected. This particular subject still requires a great deal of investigation to understand the underlying phenomenon. A word of caution is necessary when analyzing experimental data on nanocrystalline materials.
In this section, only inert gas condensation (IGC) will be presented for it is the most frequently used PVD method. IGC was one of the first techniques with electrodeposition and mechanical alloying used to fabricate nanocrystalline materials [28, 29]. The production of nanograins via IGC is more complex than in other methods presented above. For ease of comprehension, a schematic of one of the many possible existing IGC devices is presented in Fig. 14. The metallic gas, evaporated from two sources, condenses in contact with cold inert gas atoms leading to the creation of atom clusters which are transported by convection onto a cold finger refrigerated with liquid nitrogen.