How To Read Ttt Diagram
Like phase diagrams ttt and ctt diagrams provide a kind of map that enables you to get oriented in the wilderness of steel alloys structures processes and properties. Time temperature transformation ttt diagrams r.
Solved 2 Read About The T T T Diagram For Steel And Desc
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How to read ttt diagram. Httpsgooglxcrt6u for 60 videos on engineering materials. Explaination of ttt diagram material science part 1 if the voice isnt clear to you please use captions in the play bar. Someone explain ttt diagrams or isothermal transformation diagrams.
Byamr abdeen help us caption. Live tv from 70 channels. The lines on a ttt diagram represent points at which a material transforms from one phase or microstructure to another.
Time temperature transformation ttt curves ttt diagram is a plot of temperature versus the logarithm of time for a steel alloy of definite composition. Like phase diagrams once more ttt or cct diagrams are easy to read after you learned a few rules but not so easy to calculate. The diagram on the lower left shows this it is directly taken from the figure above the ttt diagram and usually not included.
Isothermal transformation diagrams also known as time temperature transformation ttt diagrams are plots of temperature versus time usually on a logarithmic scalethey are generated from percentage transformation vs time measurements and are useful for understanding the transformations of an alloy steel at elevated temperatures. Someone explain ttt diagrams or isothermal transformation diagrams. No cable box required.
I have a final on this stuff but i have no idea where to begin with this. 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. It graphically describes the cooling rate required for the transformation of austenite to pearlite bainite or martensite.
Ttt diagram on the other hand ttt diagram is a more practical diagram. 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. An isothermal transformation diagram is only valid for one.
Ttt diagrams have time on the x axis and temperature on the y axis. It shows what structures can be expected after various rates of cooling. Manna assistant professor centre of advanced study department of metallurgical engineering institute of technology banaras hindu university varanasi 221 005 india.
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