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 ›› 2012, Vol. 33 ›› Issue (2): 26-28.

• 工艺技术 • 上一篇    下一篇

核电站设备制造中双相不锈钢的应用

孙海涛1,王建勇2   

  1. 1. 环境保护部核与辐射安全中心,北京 100082;
    2. 永兴特种不锈钢股份有限公司,湖州 313005
  • 收稿日期:2011-10-17 出版日期:2012-04-01 发布日期:2022-10-14
  • 作者简介:孙海涛(1979-),男,硕士,北京理工大学毕业,核电站设备材料安全审评

Application of Duplex Stainless Steels in Manufacture of Equipment for Nuclear Power Station

Sun Haitao1 ,Wang Jianyong2   

  1. 1. Nuclear and Radiation Safety Center, SEPA, Beijing 100082 ;
    2. Yongxing Special Stainless Steel Co Ltd, Huzhou 313005
  • Received:2011-10-17 Published:2012-04-01 Online:2022-10-14

摘要: 奥氏体-铁素体双相不锈钢中稳定存在奥氏体相和铁素体相,该钢具有较高的机械性能和优异的耐点蚀、晶间腐蚀和应力腐蚀性能,在核电站设备制备中被广泛应用。一般双相不锈钢铸件中铁素体相的体积分数≤20%,服役温度≤425℃,双相不锈钢锻件中铁素体相约占50%,服役温度≤250℃。文中介绍了核电站设备中应用的双相不锈钢铸、锻件的化学成分、制造和焊接工艺要求及组织和性能。

关键词: 核电站设备, 双相不锈钢, 铸件, 锻件, 应用

Abstract: The austenite-ferrite duplex stainless steels have stable austenite phase and ferrite phase structure that have higher mechanical properties and excellent pitting, intergranular corrosion and stress corrosion resistance, therefore the steels are wide applied in manufacture of equipment for nuclear power station. In general the volume fraction of ferrite phase in casting of duplex stainless steels is ≤ 20% with service temperature less than 425 ℃ , and the volume fraction of ferrite phase in forgings of duplex stainless steel is about 50% with service temperature less than 250 ℃. The chemical composition, manufacture and welding process, and structure and properties of casting and forgings o£ duplex stainless steels applied in equipment for nuclear power station are presented in this article.

Key words: Equipment for Nuclear Power Station, Duplex Stainless Steel, Casting, Forging, Application