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Which of the following factors does not influence the variety and quality of metal?

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in Engineering Material & Metallurgy by (773k points)
Which of the following factors does not influence the variety and quality of metal?

(a) Rate of heating and cooling

(b) Quenching medium

(c) Furnace

(d) Grain size

The question was asked during an internship interview.

This is a very interesting question from Annealing topic in division Heat Treatment of Engineering Material & Metallurgy

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Right answer is (d) Grain size

To explain: The variety of metal and various metallurgical processes depend upon the method and rate of heating and cooling, furnaces used, and quenching medium. Grain size is one of the effects of heat treatment, not a cause for any change.

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