Cold working of a material results in increase in hardness, which is termed as the ______________ hardening ?

Cold working of a material results in increase in hardness, which is t

1.	Cold working of a material results in increase in hardness, which is termed as the ______________ hardening ?
A.	Cold
B.	Work
C.	Age
D.	Induction
Answer» C. Age

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Cold working of a material results in increase in hardness, which is termed as the ______________ hardening ?

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