氮在奥氏体不锈钢中的作用

Effects of Nitrogen in Austenitic Stainless Steels

论述了在奥氏体不锈钢中适量加入氮可以提高奥氏体组织稳定性、力学性能和部分抗腐蚀能力 ;表面渗氮技术 ,如等离子体源渗氮 ,使得奥氏体不锈钢的力学性能、抗腐蚀性能更加优异 同时指出有关氮化物析出的原因、条件以及对力学性能、抗腐蚀性能的一些负面影响 研究结果表明 ,由于氮价格十分低廉、可以部分甚至全部取代镍以及合金化后展现出的优良性能 ,氮已经成为奥氏体不锈钢重要的合金化元素 。

Austenitic stainless steel with property alleyed nitrogen can contribute to the stability of structure, the mechanical properties and corrosion resistance. Surface nitriding technologies, such as plasma source ion nitriding technology, can bring better mechanical properties and corrosion resistance. Some reasons and qualifications of nitrides separating out and their negative effects are explained. Because of its low price,nickel replacing partly or wholly and excellent performance after being alloyed, nitrogen has become a more and more important alloying element of austenitic stainless steels. More and more attention has been drawn to this field of research.