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本文采用兼顾化学成分和热加工温度的方法来预测δ-F的形成,通过降低铁素体形成元素的含量,提高奥氏体形成元素的含量,从而获得较低的铬当量,减少了δ-F相的形成。证实了C、N、V对δ-F的形成起决定作用,有效地降低了δ-F相的含量,将δ-F相控制在5%以内,从而改善了材料0Cr17Ni4Cu4Nb的力学性能,提高其使用寿命,为新型叶片钢的开发设计、制造使用提供了可靠的参考数据。
In this paper, the formation of δ-F is predicted by taking both chemical composition and thermal processing temperature into account. By reducing the content of ferrite forming elements and increasing the content of austenite forming elements, the low chromium equivalent can be obtained and the δ- Formation of F-phase. It is confirmed that C, N and V play a decisive role in the formation of δ-F, effectively reducing the content of δ-F phase and controlling the δ-F phase within 5%, thereby improving the mechanical properties of 0Cr17Ni4Cu4Nb Life, for the development of new leaf blade design, manufacture and use provides a reliable reference data.