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

Table 2

Parameters for the ion-nitriding processes.

Parameter	Condition
Base heat treatment	Industrially quenched and tempered (Q/T)
Pressure (mbar)	2.7
Gas ratio (N2 : H2)	1 : 3
Temperature (°C)	400
Time (min)	240
Supplied current density (㎃/㎠)	0.43 (Sample A), 0.85 (Sample B), and 1.27 (Sample C)