End product of austempering process

Q.  Which of the following phase is obtained as the end product, after complete heat treatment cycle in austempering process?
- Published on 11 Sep 15

a. Austenite
b. Bainite
c. Martensite
d. Pearlite

ANSWER: Bainite

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    Discussion

  • Sravanthi    -Posted on 12 Nov 15
    Austempering process: This method is designed to overcome limitations of quenching and tempering process. The metallic component is heated to austenizing temperature and is further cooled in a salt bath furnace. When cooled it is maintained at temperature below nose of TTT (Time temperature transformation) curve and above transformation line.

    - The end product obtained is 100 % bainite when temperature of both centre and surface are same and are made by interrupting quenching process.

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