Solidus line
The solidus line (from Latin solidus - the solid; for eutectic systems also eutectical or eutectic line ) is the limit in the phase diagram of an alloy , a solution or a mixed crystal that separates the area of solid phases from the area of solid and liquid phases.
Commonly, phase diagrams for alloys at constant pressure are presented as a graph of temperature as a function of alloy composition. A melt with a certain alloy composition will be completely solidified when it cools down slowly when it reaches the solidus temperature, or it will begin to melt when heated slowly. The line connecting these temperatures for different compositions is the solidus line. An example is the iron-carbon diagram , where the solidus line runs along the points AHIECF.
In the case of a pure metal or a eutectic , the solidus temperature coincides with the liquidus temperature . The melting range then changes to a melting point . The liquidus and solidus lines form an intersection. The solidus line is then called eutectical and is an isotherm .
See also
Web links
- Solidus curve. In: Spectrum Lexicon of Geosciences.
- Melting diagram. In: Spectrum Lexicon of Chemistry.
Individual evidence
- ↑ Reinhart Poprawe: Laser technology for manufacturing: Basics, perspectives and examples for the innovative engineer , 2005, Springer-Verlag , ISBN 3540214062