What is recalescence? - Cooling curves

Q.  What is meant by recalescence in cooling curves?
- Published on 11 Sep 15

a. Time required for liquefying solid components
b. Time required for completely solidifying the casted components
c. The cooling curve formed due to latent heat of fission
d. Liberated heat increases temperature of an under cooled liquid metal during nucleation

ANSWER: Liberated heat increases temperature of an under cooled liquid metal during nucleation

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    Discussion

  • Sravanthi   -Posted on 20 Nov 15
    Different types of cooling curves are:

    - The increase in temperature of an undercooled liquid metal which is caused due to liberation of heat during nucleation is called as recalescence.

    - The cooling curve formed when a material is solidified due to latent heat of fusion is called as thermal arrest.

    - Undercooling is defined as the temperature to which liquid metal cools down during nucleation below equilibrium freezing temperature.

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