高氮奥氏体钢用廉价的氮代替贵金属镍来稳定钢中奥氏体,能够在不损害塑性和韧性的情况下,显著提高钢的强度,因而在许多领域都获得了十分广阔的发展和应用前景。高氮钢现有的制备方法主要是熔炼法和粉末冶金法。由于高压冶炼高氮钢制备技术存在能耗高、设备复杂等不足,而粉末冶金生产高氮钢的优势在于能够细化晶粒,可以通过非平衡方法获得过饱和的含氮固溶体和细小沉淀相,能较为容易地获得更高的氮含量,并可实现近终成形,另外其工艺灵活、资金投入低,因此成为当前高氮钢制备中最有潜力的 High Nitrogen Austenitic Steels Replace cheap nickel with noble nickel to stabilize the austenite in steel, which results in a significant increase in the strength of the steel without impairing ductility and toughness and thus has gained a tremendous development in many areas. Application prospects. The existing preparation methods of high nitrogen steel are mainly melting method and powder metallurgy method. Due to high energy consumption and complicated equipment, the high-pressure smelting high-nitrogen steel has the advantages of high energy consumption and complex equipment. The advantage of high-nitrogen steel produced by powder metallurgy is that it can refine the grains and can obtain supersaturated nitrogen-containing solid solution and fine precipitates by non-equilibrium method , Can more easily obtain a higher nitrogen content, and can achieve near-end forming, the other its process flexibility, low capital investment, it has become the most potential high nitrogen steel preparation