Abstract
Using three kinds of Cr containing powders, vacuum sintered Cr-steel specimens of different porosity were prepared. The transformation behavior and hardenability of these specimens were investigated by means of dilatometric method. The results obtained are as follows:
1) The difference of porosity had no effect on the feature of CCT diagram and the critical cooling rate.
2) Different features of CCT diagram were mainly due to the Cr distribution caused by the use of different Cr containing powders.
3) From the relation between critical cooling rate and ideal critical diameter after Grossmann, it was concluded that the hardenability of sintered steels was not inferior to that of wrought steels in the experimental conditions of present investigation.
