Effect of Magnetic Field Coupled Deep Cryogenic Treatment on Wear Resistance of AISI 4140 Steel

Table 2

Process program.

Group	Quenching	Deep cryogenic treatment	Magnetic field treatment	Tempering
UT	N	N	N	N
HT	Y	N	N	Y
DCT	Y	Y	N	Y
MDCT	Y	Y	Y	Y

“Y” means yes and “N” means no.