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1前言向不锈钢中添加氮元素可以大大改善不锈钢的机械性能,提高其耐蚀性。添加氮会大大增加不锈钢的强度,而延展性不变。对于固溶强化,氮比碳更为有效,因为氮是一种强奥氏体稳定剂,它可以最大限度的减少奥氏体稳定化处理所需要的镍量,并且提高耐蚀性,特别是耐点蚀和缝隙腐蚀性。因常压下氮在铁水和铁基合金液中的溶解度非常低,所以常压下氮合金化非常困难。在高压氮
1 Introduction Adding nitrogen to stainless steel can greatly improve the mechanical properties of stainless steel to improve its corrosion resistance. Adding nitrogen will greatly increase the strength of stainless steel, ductility unchanged. For solid solution strengthening, nitrogen is more effective than carbon because nitrogen is a strong austenitic stabilizer that minimizes the amount of nickel required for austenitizing and increases corrosion resistance, particularly Pitting and crevice corrosion resistance. Due to the very low solubility of nitrogen in molten iron and iron-based alloy at atmospheric pressure, nitrogen alloying is very difficult under atmospheric pressure. At high pressure nitrogen