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SOME ASPECTS CONCERNING THE TRANSFORMATION OF RESIDUAL AUSTENITE IN MARTENSITE AT THE CRYOGENIC TREATED BEAR STEELS


GHEORGHIAN MIRELA, CIUCESCU DORU
UNIVERSITY OF BACĂU

Issue:

MOCM, Number 14, Volume II

Section:

Issue No. 14 - Volume II (2008)

Abstract:

The treatment under 0oC it is imposed to the pieces in which the residual austenite is not wished by the negative effect on the physico – mechanical properties and on the dimensional stability. The classic treatment can not assure the rotation precision on the bear steels, giving a quantity of 10 – 18 % residual austenite. In this paper the influence of cryogenic quenching temperature on the kinetics of austenite – martensite transformation.

Keywords:

residual austenite, cryogenic quenching, austenite – martensite transformation, bearing steels.

Code [ID]:

MOCM200814V02S01A0017 [0002015]


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