Free and printable TTT diagrams are available in best quality for you to print. Isothermal transformation diagrams (also known as time-temperature-transformation (TTT) diagrams) are plots of temperature versus time. They are generated from percentage transformation-vs time measurements, and are useful for understanding the transformations of an alloy steel at elevated temperatures. Take a look at the example of an TTT diagrams for steel provided below.
These TTT diagrams are plots of temperature versus time (usually on a logarithmic scale). They are useful for understanding the transformations of an alloy steel that is cooled isothermally. Isothermal transformation diagrams are generated from percentage transformation-vs logarithm of time measurements. The 101 Diagramss below are the TTT diagrams for carbon and iron.
A TTT diagram is only valid for one specific composition of material, and only if the temperature is held constant during the transformation, and strictly with rapid cooling to that temperature. Though usually used to represent transformation kinetics for steels, they also can be used to describe the kinetics of crystallization in ceramic or other materials.
The last diagram above is the CCT diagram which is used to represent which types of phase changes will occur in a material as it is cooled at different rates. All pictures presented are the printable examples of TTT diagrams. You can also find other educational diagrams in the other posts in this site by browsing it in our search column or categories!