On abnormal grain growth in nanocrystalline materials induced by small particles
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Vladimir Y. Novikov
Abstract
A duality in the behaviour of small particles, i. e. their ability to migrate along with some grain boundaries and, simultaneously, inability to move along with the others, has been shown to affect the character of the grain growth process. It is found by numerical simulations that a decrease in the particle mobility favours the evolution of abnormal grain growth and that the particle volume fraction, at low particle mobility, also affects its development. It has been supposed that these results explain the evolution of abnormal grain growth in compacted nanocrystalline materials where small voids could play the part of particles.
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- Original Contributions
- On the evolution of microstructure in oxygen-free high conductivity copper during thermo-mechanical processing using rotary swaging
- Phase-field simulation of diffusion couples in the Ni–Al system
- Finnis–Sinclair potentials for fcc Au–Pd and Ag–Pt alloys
- Hollow pyramidal lattice truss structures
- Synthesis of single-phase polycrystalline Ca2Si powder and sintered compacts
- On the micromechanics of die compaction of composite powder materials
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- The effects of tool rotation speed and traverse speed on friction stir welding of AISI 304 austenitic stainless steel
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