33 How To Read Ttt Diagram

This feature is not available right now. Ttt diagrams have time on the x axis and temperature on the y axis.

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Time temperature transformation ttt diagrams r.

How to read ttt diagram. Someone explain ttt diagrams or isothermal transformation diagrams. Please try again later. The diagram on the lower left shows this it is directly taken from the figure above the ttt diagram and usually not included.

I have a final on this stuff but i have no idea where to begin with this. It shows what structures can be expected after various rates of cooling. Ttt diagram on the other hand ttt diagram is a more practical diagram.

Ttt diagram indicates a specific transformation starts and ends and it also shows what percentage of transformation of austenite at a particular temperature is achieved. Time temperature transformation ttt curves ttt diagram is a plot of temperature versus the logarithm of time for a steel alloy of definite composition. The lines on a ttt diagram represent points at which a material transforms from one phase or microstructure to another.

Someone explain ttt diagrams or isothermal transformation diagrams. Manna assistant professor centre of advanced study department of metallurgical engineering institute of technology banaras hindu university varanasi 221 005 india. 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.

It graphically describes the cooling rate required for the transformation of austenite to pearlite bainite or martensite.

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