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Chemical Engineering Mcqs

Secondary hardening in steels arises out of the _____________________?

 (A)  Precipitation of fine alloy carbides at high temperatures

 (B)  Refinement of ferrite grain size by working

 (C)  Decomposition of retained austenite upon heat treatment

 (D)  Precipitation of complex inter-metallic upon heat treatment

Submitted By :Ali Uppal

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