微量元素氮对中铬白口铸铁的强韧化作用

Strengthing and Toughening Effects of Trace Element Nitrogen on Medium Chromium White Cast Iron

在所设计的含2．8％～3．0％C，7％～9％Cr的中铬白口铸铁中，通过特定的工艺向铁水中添加一定量的氮，使氮在中铬白口铸铁凝固过程中以原子状态存在，考察氮对中铬白口铸铁凝固过程及其性能和组织的影响。

Some amount of nitrogen was added into a medium chromium white cast iron with 2.8% ~3. 0% C and 7 % ~ 9% Cr by using a special process with the purpose that the nitrogen would exist as atom nitrogen during the solidification process of the white cast iron. The effects of nitrogen on the solidification process l properties and structures of medium chromium white cast iron were investigated.