Secondary hardening in steels arises out of the ____... - Solved MCQs & Answer

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Secondary hardening in steels arises out of the ________?

APrecipitation of fine alloy carbides at high temperatures

BPrecipitation of complex inter-metallic upon heat treatment

CRefinement of ferrite grain size by working

DDecomposition of retained austenite upon heat treatment

Correct answer

D. Decomposition of retained austenite upon heat treatment

Explanation

The correct answer is Decomposition of retained austenite upon heat treatment.

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