ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2022, Vol. 43 ›› Issue (2): 82-84.

所属专题: 奥氏体不锈钢

• 组织和性能 • 上一篇    下一篇

固溶温度对奥氏体不锈钢022Cr24Ni17Mo5Mn6NbN组织和性能的影响

史咏鑫1,2 李青1,2, 钟庆元1,2, 冯文静1,2, 常松1,2,王敏1,2   

  1. 1中航上大高温合金材料股份有限公司,邢台054800;
    2河北省特种合金再生工程技术研究中心,邢台054800
  • 收稿日期:2021-07-23 出版日期:2022-04-01 发布日期:2022-06-10
  • 作者简介:史咏鑫(1989-),男,硕士(2014年长安大学),工程师,2011 年长安大学(本科)毕业,特殊钢产品开发。

Effect of Solution Temperature on Microstructure and Properties of Super Austenitic Stainless Steel 022Cr24Ni17Mo5Mn6NbN

Shi Yongxin1,2, Li Qing1,2, Zhong Qingyuan1,2, Feng Wenjing1,2, Chang Song1,2 ,Wang Min1,2   

  1. 1 Avic Shangda Superalloys Company Limited, Xingtai 054800 ;
    2 Hebei Engineering Research Center for Special Alloy Regeneration, Xingtai 0548CX
  • Received:2021-07-23 Published:2022-04-01 Online:2022-06-10

摘要: 实验用022Cr24Ni17Mo5Mn6NbN超级奥氏体不锈钢(/%:0.028C,0.33Si,6.21 Mn,24.93Cr,17.03Ni,4.24Mo,0.45N)采用1 t非真空感应+电渣重熔的工艺冶炼,Φ360 mm电渣锭经锻造开坯后轧制为Φ40mm棒材研究了热轧态(终轧1 000℃,水冷)和经1 070~1 180℃固溶后钢的组织、点腐蚀性能和力学性能实验结果表明,随固溶温度的升高,该钢品粒逐渐长大,强度降低,塑性增加,耐点腐蚀性能得到改善。采用1 120℃进行固溶,该钢可以获得均匀的组织、优异的点腐蚀性能和良好的综合力学性能。

关键词: 超级奥氏体不锈钢022Cr24Ni17Mo5Mn6NbN, 固溶温度, 组织, 力学性能, 点腐蚀性能

Abstract: The tested super austenitic stainless steel 022Cr24Ni17Mo5Mn6NbN (/% : 0. 028C, 0. 33Si, 6. 21Mn, 24. 93Cr, 17. 03Ni, 4. 24Mo, 0. 45N) is melted by 1 t non vacuum induction furnace and electroslag remelting process, and rolled into Φ 40 mm bar after Φ360 mm electroslage ingot forging. The microstructure, pitting corrosion resistance and mechanical properties of the steel as hot-rolled (end rolling at 1 000 °C , WC) and after solution at 1 070 ~ 1 180 °C are studied. The tested results show that with the increases of solution temperature, the grain size of steel gradually grows, the strength of steel decrease and the plasticity increases, and the pitting corrosion resistance improves. Uniform structure, better pitting corrosion resistance and good mechanical properties of steel are obtained by solid solution at 1 120 °C.