Welcome to Alloy Phase
The ASM Alloy Phase Diagram Database
allows subscribers to explore
more than 36,500 binary and ternary phase
and associated phase data for more than 6200 systems
from their Web browsers.
To get started, enter one or more elements in the boxes at the
top of the screen and click Go, or select Explore to
browse by elements and systems, or select Search
to build targeted queries.
Did you know?
A eutectoid reaction
reaction is an isothermal reversible reaction in which a solid solution is
converted into two or more intimately mixed solids on cooling, the number of solids formed being the same as
the number of components in the system. The difference from a eutectic reaction is that, in a eutectoid reaction,
it is a solid rather than a liquid that transforms into two other solid phases at a single temperature. In the
stable C-Fe diagram shown, the eutectoid reaction (Fe) ht ? (Fe) rt + (C) gra occurs at 97 at.% Fe and 740 °C.
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