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Question #89998

Chemical Engineering

Secondary hardening in steels arises out of the _____________________?

Options:

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

Answer: Secondary hardening in steels arises out of the Decomposition of retained austenite upon heat treatment.

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