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 (4): 64-66.

• 组织和性能 • 上一篇    下一篇

固溶处理对超级双相不锈钢S32750组织和性能的影响

李俊   

  1. 太钢不锈钢股份有限公司技术中心,太原030003
  • 收稿日期:2012-01-21 出版日期:2012-08-01 发布日期:2022-10-25
  • 作者简介:李俊(1978-),男,硕士,工程师,双相、耐热不锈钢的新产品的研发。

Effect of Solid Solution Treatment on Structure and Properties of Super Duplex Stainless Steel S32750

Li Jun   

  1. Technology Center, Taigang Stainless Steel Co Ltd, Taiyuan 030003
  • Received:2012-01-21 Published:2012-08-01 Online:2022-10-25

摘要: 研究了950~1 200℃60 min水冷的固溶处理对超级双相不锈钢S32750(/%:0.02C、0.49Si、1.03Mn、0.026S、0.001P、25.01 Cr、7.03Ni、3.80Mo、0.29N)12 mm板的组织、力学性能和耐蚀性的影响。结果表明,随固溶温度升高,钢中铁素体相增加,奥氏体相减少;在950℃加热时铁素体中析出大量σ-相,使钢的性能恶化,在1 050~1 100℃固溶处理后,钢中铁素体相和奥氏体相各占50%, S32750钢具有较好的综合力学性能和优良的耐蚀性能。

关键词: 超级双相不锈钢S32750, 固溶温度, 组织, 力学性能, 耐蚀性

Abstract: The effect of solid solution treatment at 950 〜1 200 T for 60 min water cooling on structure, mechanical properties and corrosion resistance of 12 mm plate of super duplex stainless steel S32750 (/%: 0. 02C, 0. 49Si, 1. 03Mn, 0. 026S, 0. 001P, 25. 01Cr, 7. 03Ni, 3. 80Mo, 0. 29N) has been studied. Results show that with raising solution temperature the ferrite phase in steel increases and the austenite phase decreases ; heating at 950 °C a large number of a-phase precipitates in ferrite led to the deterioration of performance ; as solid solution treated at 1 050 ~ 1 100 °C the volume of ferrite phase and austenite phase in steel respectively accounts for 50%, and the steel S32750 has better comprehensive mechanical properties and corrosion resistance.

Key words:  , Super Duplex Stainless Steel S32750, Solution Temperature, Structure, Mechanical Properties, Corrosion Resistance