高氮Fe-Cr-Mn-Ni系奥氏体不锈钢的加压感应熔炼

特殊钢 ›› 2005, Vol. 26 ›› Issue (5): 10-13.

高氮Fe-Cr-Mn-Ni系奥氏体不锈钢的加压感应熔炼

张峰，李光强，朱诚意

武汉科技大学，武汉 430081

收稿日期:2005-04-11 出版日期:2005-10-01 发布日期:2023-03-30
作者简介:张峰(1976-)，硕士研究生，主要从事高氮不锈钢制备及焊接过程中的物理化学
基金资助:
国家自然科学基金和上海宝钢集团公司联合资助项目(50374053)

Pressurized Induction Melting of High Nitrogen Fe-Cr-Mn-Ni Austenite Stainless Steel

Zhang Feng , Li Guangqiang , Zhu Chengyi

武汉科技大学，武汉 430081

Received:2005-04-11 Published:2005-10-01 Online:2023-03-30

摘要/Abstract

摘要： 采用MgO坩埚高频真空感应炉在氮气压力0.45~1.0MPa、温度1640~1700℃下,对加压感应熔炼高氮Fe-Cr-Mn-Ni系奥氏体不锈钢进行了实验研究。结果表明,1913K、1.0MPa氮气氛中Cr12、Cr17Mn5Ni5、Cr19Mn15和Cr20Mn8不锈钢中氮的溶解度分别为0.391%、0.692%、1.120%和0.899%,氮在液态不锈钢中的溶解与Sievert定律有所偏离;氧浓度在350×10^-6内,1913K、1.0MPa氮气氛中Cr20Mn8钢液的吸氮反应仍为一级反应,其传质系数为0.023cm·s^-1;随钢中氧浓度的增加,液态钢的吸氮速率和钢液中的平衡氮含量显著降低。

关键词: 高氮奥氏体不锈钢, 加压感应熔炼, 吸氮速率

Abstract: The pressurized induction melting of high nitrogen Fe-Cr-Mn-Ni austenite stainless steel has been tested using MgO crucible high induction furnace with nitrogen pressure 0.45-1.0 MPa between temperature 1640 (1913 K) and 1700 °C (1973 K) . The results showed that with 1.0 MPa nitrogen atmosphere at 1913 K the solubility of nitrogen in molten stainless steel Cr12, Cr17Mn5Ni5, Cr19Mn15 and Cr20Mn8 was respectively 0.391%, 0.692%, 1.120% and 0.899%, and it was found that to a certain extent the nitrogen dissolution in molten stainless steel deviated from Sievert^,s law; while the oxygen content lower than 350 x 10^-6, with 1.0 MPa nitrogen atmosphere at 1913 K, the reaction of absorbed nitrogen in molten steel Cr20Mn8 still was first order reaction, its mass transfer coefficient was 0.023 cm▪s^-1 ; and with oxygen content increasing in molten steel the nitrogen dissolving rate and equilibrium nitrogen content in molten steel markedly decreased.

Key words: High Nitrogen Austenite Stainless Steel, Pressurized Induction Melting, Nitrogen Dissolving Rate

张峰, 李光强, 朱诚意. 高氮Fe-Cr-Mn-Ni系奥氏体不锈钢的加压感应熔炼[J]. 特殊钢, 2005, 26(5): 10-13.

Zhang Feng , Li Guangqiang , Zhu Chengyi. Pressurized Induction Melting of High Nitrogen Fe-Cr-Mn-Ni Austenite Stainless Steel[J]. Special Steel, 2005, 26(5): 10-13.

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