How To Read A Phase Diagram

In single phase diagrams l1 will run down the left side of the page and n or l2 will run down the right side of the page. For the moment they are labeled a b and c.

Chapter 9 Phase Diagrams 1

Reading wiring diagrams and understanding electrical symbols.

How to read a phase diagram. Boiling points melting points and sublimation points vary with pressure. If it is temperature that you are varying you can easily read off the boiling temperature from the phase diagram. In the diagram above it is the temperature where the red arrow crosses the boundary line.

If you know everything already you can take this. The liquid will change to a vapour it boils when it crosses the boundary line between the two areas. This is the phase diagram for water.

Although phases are conceptually simple they are difficult to define precisely. Metallurgy of steel and metallurgy of steel heat treating teach about the iron carbon phase diagram. How to read a phase diagram and why you might want to.

Reading a ternary diagram a ternary diagram is a triangle with each of the three apexes representing a composition such as sandstone shale and limestone. At these temperatures and pressures the rate at which the solid sublimes to form a gas is equal to the rate at which the gas condenses to form a solid. Its the point at the bottom of the v formed by the liquidus lines.

You can learn more about how to read and use phase diagrams in a few of our courses. A phase diagram helps show what phase exist at what temperature and pressure. These diagrams plot pressure on the y axis and temperature on the x axis.

A phase diagram is a graph which shows under what conditions of temperature and pressure distinct phases of matter occur. The simplest phase diagrams are of pure substances. How to read a phase diagrams.

Metallurgy of precipitation strengthening teaches about the aluminum copper phase diagram. Everybody remembers that the boiling point of water is 100c but thats only true at a certain pressure 1 bar. So just to understand whats going on here is that on this axis i have pressure.

Control wiring electrical contacts normally open and normally closed contacts. Parts 2 4 show you how to read and interpret simple phase diagrams describe the important iron carbon phase diagram and give examples of some more complex phase diagrams. The points along the line connecting points a and b in the phase diagram in the figure above represent all combinations of temperature and pressure at which the solid is in equilibrium with the gas.

Solidus and liquidus are terms that name the phase boundaries between a solid phase and a phase that contains both a solid and a liquid solidus or between that solidliquid phase and a liquid phase liquidus. On the x axis i have temperature and at any given point this diagram will tell you whether youre dealing with a solid so solid will be here a liquid will be here or a gas. Reading wiring diagrams and understanding electrical symbols.

Eutectic is a term that names the point of the v described above. Parts 5 7 introduce phase transformations and show how phase diagrams can be used to predict microstructure.

Chapter 10 Phase Diagrams Ppt Download