Re: Unfamiliar Term

Posted by T_Bone on September 06, 2004 at 15:32:58 from (4.240.132.146):

In Reply to: Unfamiliar Term posted by Allan in NE on September 06, 2004 at 09:35:34:

Hi Allan,

Atoms of elements that arrange themselves in a orderly geometric pattern upon solidification are said to be crystalline.

Crystals grow in all directions upon solidification until they meet other crystals also growing in the melt. When the crystals meet and produce irregular boundries they are called grains.

That is what we mean when we say were looking at the metal grain structure. We are actually looking at the many crystals that is formed when the metal has cooled.

T_Bone

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