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Hot working of brittle materials is not possible as they do not show yielding behaviour.

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in Casting-Forming-Welding II by (119k points)
Hot working of brittle materials is not possible as they do not show yielding behaviour.

(a) True

(b) False

This question was addressed to me in semester exam.

This interesting question is from Advantage and Disadvantage of Hot and Cold Forming in division Types of Die & Metal Forming Processes of Casting-Forming-Welding II

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The correct choice is (b) False

For explanation: At high temperature, the materials generally have great amount of ductility and so there is no limit or restriction on the amount of hot working that can be performed on a metal. Hence, even the brittle materials can be used for the hot working. In hot working, the grain structure of material is refined which enhances the mechanical properties of material.

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