Difference between revisions of "Grain boundaries"

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(New page: When a material is solidifying it may become a polycrystalline solid when the solidification process starts with nucleation sites which form and grow until there are many small crystals or...)
 
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When a material is solidifying it may become a polycrystalline solid when the solidification process starts with nucleation sites which form and grow until there are many small crystals or grains. The interface between these grains is called a grain boundary. Grain boundaries are considered defects because the crystallographic orientations of the separate grains are not aligned where they mee at the boundary.
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When a material is solidifying it may become a polycrystalline solid when the solidification process starts with nucleation sites which form and grow until there are many small crystals or grains. The interface between these grains is called a '''grain boundary'''. '''Grain boundaries''' are considered defects because the crystallographic orientations of the separate grains are not aligned where they meet at the boundary.

Revision as of 01:52, 22 September 2009

When a material is solidifying it may become a polycrystalline solid when the solidification process starts with nucleation sites which form and grow until there are many small crystals or grains. The interface between these grains is called a grain boundary. Grain boundaries are considered defects because the crystallographic orientations of the separate grains are not aligned where they meet at the boundary.