A continuous cooling transformation (CCT) phase diagram is often used when heat treating steel. [1] These diagrams are used to represent which types of phase changes will occur in a material as it is …

Determination of CCT diagram type I CCT diagrams are determined by measuring some physical properties during continuous cooling. Normally these are specific volume and magnetic permeability. …

In the most common heat treatments, austenite transformation does not occur at a constant temperature but rather in the course of continuous cooling. Therefore, it is important to refer to the austenite non …

New continuous cooling transformation (CCT) equations have been optimized to calculate the start temperatures and critical cooling rates of phase formations during austenite decomposition in low …

The continuous cooling diagram (CCT diagram) gives a more accurate picture for heat treatments involving continuous cooling. The CCT diagram is a plot of temperature versus the logarithm of time …

There are two types of CCT (continuous cooling transformation) diagrams that plot the start, fraction, and finish of transformation temperatures against cooling time or rate. CCT diagrams measure the …

Continuous cooling transformation (CCT) diagrams are broadly used to design specific heat treatments and to predict the microstructure and mechanical properties after thermal treatments [1]. Most of …

There are two main types of transformation diagram that are helpful in selecting the optimum steel and processing route to achieve a given set of properties. These are time-temperature transformation …

CCT diagrams are determined through dilatometry, where the sample's dilation is measured during controlled cooling and phases are identified from changes in the dilation curve slope. Multiple cooling …

Jan 3, 2026 · The continuous cooling transformation (CCT) diagram of a steel is a fundamental tool in metallurgy, providing critical insight into the phase transformations that occur during cooling from the …