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Computer Science Fundamentals System Design Objective
May 16, 2013

Secondary hardening in steels arises out of the

Choose the correct answer:
A) refinement of ferrite grain size by working.
B) precipitation of fine alloy carbides at high temperatures.
C) precipitation of complex inter-metal-lics upon heat treatment.
D) decomposition of retained austenite upon heat treatment.
Detailed Explanation

Option D is correct.

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