Question

Which of the following will affect the hardenability of steel?

I. composition of austenite
II. composition of cementite
III. austenite grain size
IV. quenching medium
V. carbon content
A) II only
B) I and V
C) III and V
D) I, II, III and V

Answer 1

Hardenability of steel is influenced by austenite composition, grain size, quenching medium, and carbon content, as well as cementite composition.

Step-by-step explanation:

The hardenability of steel is affected by a number of factors, including the composition of austenite, the austenite grain size, the quenching medium used during heat treatment, and the carbon content of the steel. The composition of cementite also plays a role, given that it is a constituent phase in the microstructure of steel. Hardenability refers to the ability of steel to be hardened through the process of quenching and is directly related to the above factors.