Abstract
AbstractA field ion atom probe study has been made of a low carbon steel after furnace cooling and rapid quenching from 700°C. Marked segregation of carbon to the boundaries was observed after furnace cooling, but not after rapid quenching. From comparison of previous and present results, it is concluded that the ky value of a steel can be related to the interstitial impurity content (mainly carbon) at the grain boundaries. Heat treatments that encourage grain boundary segregation of interstitials will result in steels having a high ky value.MST/1569
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