Fracture Behavior of Ion-Nitrided AISI 4140 Steel in accordance with Variable Applied Current Density

Figure 2

SEM images and hardness profiles of the cross-sectional microstructure of (a) Untreated, (b) Sample A, (c) Sample B, and (d) Sample C. (e) Vickers hardness profiles.

(a)

(b)

(c)

(d)

(e)