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Polycrystal



 

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A polycrystal is a material that is made of many smaller crystallites with varying orientation. The variation in direction can be random (called random texture) or directed, possibly due to growth and processing conditions. Fiber texture is an example of the latter.

Cf. monocrystal.

Almost all common metals, and many ceramics are polycrystalline. The crystallites are often referred to as grains.

Polycrystalline is a structure of a solid, such as brass, that when cooled form liquid crystals formed from different points within it. This creates many crystals within a structure, where these crystals meet is known as a grain boundary.

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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Polycrystal". A list of authors is available in Wikipedia.
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