Kinetics of polymorphic transformation in low-carbon steels

Surovtsev, A.P.; Yarovoi, V. V.; Sukhanov, V. E.; Proklova, A. N.

doi:10.1007/bf00717529

Cited by 4 publications

(1 citation statement)

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“…It should be noted that the effect of the separation of the range Ac n -Ac 3 into two regions in compact carbon steels seems to have been discovered for the first time by the authors of [2,3], and its special features were considered by the author of [4]. Similar results were obtained in the DTA of powder steels with carbon concentrations equal to 0.2, 0.4, and 0.6%.…”

supporting

confidence: 63%

Special features of the ? ? ? transformation in powder carbon steels

Antsiferov¹,

Grevnev²,

Perel'man³

1996

Met Sci Heat Treat

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The structural state of powder steels after sintering depends on the technological regimes of their production and can markedly affect the transformations in subsequent heat treatment. The effect of the technological regimes on the nature of the ¢t -~ 1' transformation is investigated.We investigated the effect of sintering regimes on the transformations in powder carbon steels with different densities. Steel specimens were prepared from a mixture of powders of commercial iron PZh4M2 and dry colloidal-graphite agent C-I. The specimens were pressed at 500 and 800 N/ram 2 and sintered in a hydrogen medium (with a dew point td.p=-35°C) at l l00 and 1200°C for I-4 h. Basic results were obtained for steels with the technological regimes, densities, and chemical compositions presented in Table 1. In order to check the results obtained we prepared specimens of powder carbon steels with 0.2-0.6% C using an identical technology of single pressing at 100 -800 N/ram 2 and a sintering temperature of 1150°C.

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confidence: 63%