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Last phase in patenting process
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Engineering Metallurgy
Q. Which of the following is the last phase obtained after completing heat treatment cycle in patenting process?
- Published on 11 Sep 15
a.
Bainite
b.
Martensite
c.
Pearlite
d.
None of the above
ANSWER: Pearlite
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Discussion
Sravanthi
-Posted on 12 Nov 15
- The process of patenting is similar to austempering process. It differs in the range of temperature used for isothermal transformation.
- In this process, austenized steel is quenched in molten bath furnace and is maintained at temperature above or below the nose of TTT curve.
- Till the transformation is completed this temperature is maintained and later cooled to room temperature. Pearlite is obtained by the transformation of austenite.
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