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2 July, 02:20

Describe the grain structure of a metal ingot that was produced by slow-cooling the metal in a stationary open mold.

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  1. 2 July, 02:40
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    Explanation:

    In case case of slow cooling of a metal ingot, the micro structure is more like coarse. At the surface due to high heating rate (surface will to exposed to higher temperature than the inner part and for longer time) the grains are small as grains will get lesser time to cool. Where as we go inside the grains will be gradually elongated. At the center we will find equiaxed grains.
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