Publication

Simulation of grain growth in 2-Dimensions: influence of the energy expression for the grain boundary network

Thomas Liebling
1988
Conference Papers

Abstract

Having briefly recalled both approaches for simulating 2-D grain growth published by the other groups, we outline a third one. It consists of unit topological changes occurrins at the microscopic level. Preliminary results are presented. Is is argued that further improvements will result from a revised expression of the total energy of the system that takes into account the tendency to equilibrate local forces at grain corners.

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Thomas Liebling
1988
Conference Papers

Abstract

Official source

Related concepts (32)

Grain growth

In materials science, grain growth is the increase in size of grains (crystallites) in a material at high temperature. This occurs when recovery and recrystallisation are complete and further reduction in the internal energy can only be achieved by reducing the total area of grain boundary. The term is commonly used in metallurgy but is also used in reference to ceramics and minerals. The behaviors of grain growth is analogous to the coarsening behaviors of grains, which implied that both of grain growth and coarsening may be dominated by the same physical mechanism.

Grain boundary

In materials science, a grain boundary is the interface between two grains, or crystallites, in a polycrystalline material. Grain boundaries are two-dimensional defects in the crystal structure, and tend to decrease the electrical and thermal conductivity of the material. Most grain boundaries are preferred sites for the onset of corrosion and for the precipitation of new phases from the solid. They are also important to many of the mechanisms of creep.

Potential energy

In physics, potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors. The term potential energy was introduced by the 19th-century Scottish engineer and physicist William Rankine, although it has links to the ancient Greek philosopher Aristotle's concept of potentiality. Common types of potential energy include the gravitational potential energy of an object, the elastic potential energy of an extended spring, and the electric potential energy of an electric charge in an electric field.

Related publications (32)

Simulation of grain growth in 2-Dimensions: influence of the energy expression for the grain boundary network

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