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Casting which is cooled quickly generally have coarse grain structure.

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in Casting-Forming-Welding I by (687k points)
Casting which is cooled quickly generally have coarse grain structure.

(a) True

(b) False

I had been asked this question in quiz.

The above asked question is from Rate of Solidification topic in portion Cooling and Solidification of Casting-Forming-Welding I

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Right answer is (b) False

Best explanation: The mould is a cavity where liquid metal is poured to solidify and form the desired shape of the casting. The rate at which castings solidify affects its microstructure, quality, and mechanical properties. Basically, the casting which cools quickly will have a fine grain structure and which cools very slowly will have a coarse grain structure.

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