Some rules for phase transformations in 000N18K9M5T steel

Properties of Austenite in Maraging Steel

“…It is quite possible that the concentration microinhomogeneities formed due to the dissolution of the intermetallides play a certain role in the residual austenite strengthening. Probably, the microinhomogeneities interacting with the residual austenite structure defects increase the effectiveness of the phase hardening action [5].…”

“…In [4], the value of the residual austenite ultimate strength is given as equal to 850 MPa. In [5], the austenite strength was evaluated by testing at the temperature significantly higher than M begin and the strength values close to 800 MPa were obtained. For the reverted austenite, any other similar evaluations of strength are absent.…”

“…For the reverted austenite, any other similar evaluations of strength are absent. However, it is noted in [5] that the short-term heating of maraging steel in the intercritical temperature range (650 °C, for 3-5 min) does not lead to a decrease in the strength properties despite the formation of the significant amount of the reverted austenite (30-40%). In [6] it is shown that when the temperature intervals of the development of α→γ transformations and age hardening coincide, the reverted austenite does not produce a plasticizing effect on the steel.…”