Effects of Carbon and Nitrogen Contents on Recrystallization Behavior in High Purity Ferritic Stainless Steels

摘要

In order to improve the corrosion resistance and formability of ferritic stainless steels, refining process has been developed to reduce the contents of carbon and nitrogen. As a result, the (C+N) content has been lowered to half of the past level in a decade. Since the corrosion resistance and formability of stainless steels greatly depend on (C+N) contents (1) (2), the properties obtained before should be now reviewed. Besides, the (C+N) contents could become much smaller when the refining technology would be progressed in future. The purpose of this study is to investigate the effect of (C+N) contents on the properties of high purity ferritic stainless steels. In this report, recrystallizaiton behavior, which is important for controlling grain size and mechanical properties, will be discussed. 2.