How To Read Ttt Diagram

The lines on a ttt diagram represent points at which a material transforms from one phase or microstructure to another. The diagram on the lower left shows this it is directly taken from the figure above the ttt diagram and usually not included.

Ttt Diagrams And Heat Treatment Of Steel Metallurgy

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How to read ttt diagram. Basically you start at any temperature you want and cool and hold at different temperatures to generate different microstructures. Ok ttt stands for time temperature transformation. Time is on the x axis usually logarithmic and temperature is on the y axis.

Byamr abdeen help us caption. Live tv from 60 channels. Transformation diagrams time temperature transformation ttt diagrams 1.

Time temperature precipitation diagrams and time temperature embrittlement diagrams have also been used to represent kinetic changes in steels. Ttt diagrams have time on the x axis and temperature on the y axis. Indicates the amount of transformation at a constant temperature.

Manna assistant professor centre of advanced study department of metallurgical engineering institute of technology banaras hindu university varanasi 221 005 india. Explaination of ttt diagram material science part 1 if the voice isnt clear to you please use captions in the play bar. Quiz and worksheet goals.

No cable box required. If we repeat the experiment at a temperature around 480 o c 900 o f we hit the 1 transformation line after about a tenth of a second and the transformation is finished after about 100 seconds. 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.

Time temperature transformation ttt diagrams r. Sometimes the lines are labeled with percentages which represent the percentage of the material that has transformed. Unlimited recording storage space.

The quiz will ask you about another name for a ttt diagram along with a question about the x axis and y axis as they are used in ttt diagrams. There are start and finish temperatures all down this. Samples are austenitised and then cooled rapidly to a lower temperature and held at that temperature whilst the amount of transformation is measured.

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