What is eutectic point?
Actually I read that but couldnt understand what was written that's why I posted here
chound, what is not clear in the wikipedia article.
The key point is:
In the two phase diagram given, the eutectic is found at the "V" of the liquid phase, where the vertex touches the horizontal line. The horizontal line represents a constant temperature, and the vertex represents a specific composition. The eutectic represents the point where that composition goes 'directly' from solid to liquid, i.e. without partially melting to a solid-liquid combination.
The example of the steel (Fe - C) system is perhaps better.
This figure shows the eutectic and eutectoid.
Then there is a three-phse reactions diagram below that:
http://en.wikipedia.org/wiki/Image:Three-Phase-Reactions.png [Broken] ,
which should be more clear.
Here is another site which discusses binary phase diagrams.
Look at this post from another forum. It may be helpful.
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