RESEARCH ON ANNEALING OF THE WHITE CAST IRON (II)
Effects of the Heating-rate on the Disappearance of Eutectic-cementite of the White Cast Iron
1953 Volume 39 Issue 2 Pages 129-134
Details
1953 Volume 39 Issue 2 Pages 129-134
As it was found that the disappearing states of the eutectic cementites of the white cast iron were changed due to the heating conditions when annealing, the effects of heating rate on them were studied thoroughly and it was confirmed that there exist two tendencies of cementite by heating rate.
If heating rate was not very high, the disappearance of eutectic cementite decreased with increase of the heating rate refering to the heating time between the Ac1.3 transformation range, depending chiefly on the diffusion phenomenon.
But if the heating rate exceeded some certain limit, the disappearance of cementite increased again with the increasing rate of heating, and in this case which seemed to be affected by the super heated degrees of the transformation temperatures and the stress accompanying the transformation.
