Wear and Fatigue Behaviour of Deep Cryogenically Treated H21 Tool Steel

Effect of cryogenic treatment on properties of materials: A review

“…137,154 Padmakumar et al in their investigation on tungsten carbide milling cutters under cryogenic treatment mentioned that tempering after cryogenic treatment causes little decrement in the resistance of flank and nose wear and stated that it could be due to less cobalt percentage. 122 Das in his research observed that decrease in retained austenite and change of secondary carbides helped in improvement of wear resistance of steel. 9 For H21 tool steel Korade et al found that in DCT samples there were decrease in carbide size and increase in carbide density and most of the retained austenite transformed to martensite as a result there was improvement in hardness and wear resistance.…”

“…9 For H21 tool steel Korade et al found that in DCT samples there were decrease in carbide size and increase in carbide density and most of the retained austenite transformed to martensite as a result there was improvement in hardness and wear resistance. 122 Shinde did his research on AISI H13 steel and showed that carbide density increased upto cryo soaking time of 16hrs after that it decreased and also correlated carbide particle size with wear rate. It was stated that minimum wear rate occurs at minimum carbide particles size.…”

“…9 For H21 tool steel Korade et al found that in DCT samples there were decrease in carbide size and increase in carbide density and most of the retained austenite transformed to martensite as a result there was improvement in hardness and wear resistance. 122…”

“…127 Korade et al concluded that fine carbides try to locate themselves in a gap between large carbides and acts as crack resistant in AISI steel and thus improved fatigue resistance. 122 Baldissera et al concluded that due to nucleation of fine carbide and conversion of residual stresses there is an improvement in fatigue resistance. 167 Bhavar et al in their research on Deep Cryogenic Treatment of AISIH13 steel found maximum fatigue life for cryogenically treated sample with soaking time of 32hrs under −185⁰C and it decreased a little for soaking time of 48hrs.…”

Increasing the Wear Resistance of Structural Alloy Steel 38CrNi3MoV Subjected to Isothermal Hardening and Deep Cryogenic Treatment

“…The wear and fatigue properties of H21 tool steel subjected to DCT are investigated in [24]. The DCT step (−185 • C) was applied before and after double tempering (540 • C) with subsequent soft tempering (100 • C).…”