On the Effect of Silicon on the Tempering of Martensite (2nd Report)

Abstract

In order to study the effect of silicon on the tempering of martensite, magnetic analyses were performed. It was demonstrated in these analyses that the starting temperature of the second stage of the tempering was not affected by the silicon contents of steels, but the decomposition of the retained austenite at low temperature became smaller by the addition in steels. Moreover, it was found that the temperature at which the second stage progressed at the maximum velocity in high silicon steels was higher than that in low silicon steels, and, also that the carbides which were precipitated at each tempering stage in high silicon steels were equivalent to the carbides precipitated at the same tempering stages in low silicon steels.