Thermodynamic Analysis of the Phase Transition of Supper Austenitic Stainless Steel S31254

Zhang Wei; Wang Qi; Wang Lijun; Li Jianmin

doi:10.20057/j.1003-8620.2022-00232

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Thermodynamic Analysis of the Phase Transition of Supper Austenitic Stainless Steel S31254

Smelting and Solidification | 更新时间：2026-01-21

- Thermodynamic Analysis of the Phase Transition of Supper Austenitic Stainless Steel S31254
- Special Steel Vol. 44, Issue 4, Pages: 8-14(2023)
- 作者机构：
  
  1.宝武集团太原钢铁集团技术中心，太原，030003
  2.北京科技大学钢铁共性技术协同创新中心，北京，100083
  3.河北科技大学材料科学与工程学院，石家庄，050018
- 作者简介：
- 基金信息：
- DOI：10.20057/j.1003-8620.2022-00232
  CLC： TF771
- Published：01 August 2023
- 稿件说明：
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张威,王旗,王丽君等.S31254超级奥氏体不锈钢凝固相转变的热力学分析[J].特殊钢,2023,44(04):8-14.

Zhang Wei,Wang Qi,Wang Lijun,et al.Thermodynamic Analysis of the Phase Transition of Supper Austenitic Stainless Steel S31254[J].Special Steel,2023,44(04):8-14.
张威,王旗,王丽君等.S31254超级奥氏体不锈钢凝固相转变的热力学分析[J].特殊钢,2023,44(04):8-14. DOI： 10.20057/j.1003-8620.2022-00232.

Zhang Wei,Wang Qi,Wang Lijun,et al.Thermodynamic Analysis of the Phase Transition of Supper Austenitic Stainless Steel S31254[J].Special Steel,2023,44(04):8-14. DOI： 10.20057/j.1003-8620.2022-00232.

摘要

超级奥氏体不锈钢广泛应用于海洋、环保、化工等苛刻腐蚀环境。由于合金化程度较高，凝固过程凝固偏析严重，析出相多且复杂。本文结合热力学计算软件Thermo-Calc，分析S31254超级奥氏体不锈钢在凝固过程中组织的组成和析出相的演变规律，主要合金元素Mo、Cr、Ni、N在凝固过程发挥的功能及其对相组织演变的影响，Mo-Cr元素交互作用对凝固相组织演变影响规律。结果表明，该钢种液固相线温度分别是1 394.4 ℃和1 358.6 ℃，平衡凝固路径是L→γ，非平衡凝固路径是L→L

+γ→L

+γ+δ→γ+δ+σ。Mo偏析是导致σ相析出的主要原因，δ相和σ相析出时，液相中Mo含量分别为8.5%和11.3%。

Abstract

Super austenitic stainless steel （SASS） has been developed widely for industries like marine， environmental protection， chemical industry and other harsh conditions. Due to the higher degree of alloying， the solidification segregation is more serious during solidication process ， and the precipitation phases is many and complex. In this paper， the microstructure composition and evolution law of precipitated phase of super austenitic stainless steel S31254 during solidification were analyzed with thermodynamic calculation software Thermo-Calc， as well as the function of major alloying elements Mo、Cr、Ni、N during solidification and their influence on microstructure evolution， the effect of Mo-Cr element interaction on the evolution of coagulation phase organization. The results indicate that the liquidus and solidus phase line temperatures of this steel grade is 1 394.4 ℃ and 1 358.6 ℃ respectively. The equilibrium solidification path is L → γ ， and non-equilibrium solidification path is L → L

+γ→L

+γ+δ→γ+δ+σ. Mo segregation is the main cause of the σ precipitation， and the content of Mo in the liquid phase of δ and σ phases precipitation is 8.5 % and 11.3 % respectively.

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references

Zhang S ， Li H ， Jiang Z ， et al . Influence of N on precipitation behavior， associated corrosion and mechanical properties of super austenitic stainless steel S32654 ［J］. Journal of Materials Science & Technology ， 2020 ， 42 ： 143 - 155 .

潘坤，陈海涛，郎宇平，等 . 中温时效对超级奥氏体不锈钢S31254析出相的影响［J］. 金属热处理， 2014 ， 39 （ 11 ）： 72 - 77 .

浦恩祥 . 超级奥氏体不锈钢654SMO组织性能研究［D］. 昆明：云南大学， 2014 .

马玉喜，荣凡，周荣，等 . 固溶时效对超高氮奥氏体不锈钢析出行为的影响［J］. 材料热处理学报， 2008 ， 29 （ 3 ）： 66 - 70 .

沈文兴，陈海涛，郎宇平，等 . 析出相对6Mo超级奥氏体不锈钢腐蚀性能的影响［J］. 金属热处理， 2018 ， 43 （ 7 ）： 115 - 120 .

仝中伟 . 硼对S31254不锈钢固溶处理过程第二相溶解行为的影响［J］. 特殊钢， 2020 ， 41 （ 4 ）： 71 - 74 .

Banovic S W ， DuPont J N ， Marder A R . Dilution and microsegregation in dissimilar metal welds between super austenitic stainless steel and nickel base alloys ［J］. Science and Technology of welding and Joining ， 2002 ， 7 （ 6 ）： 374 - 383 .

Ohmura T ， Tsuzaki K ， Sawada K ， et al . Inhomogeneous nano-mechanical properties in the multi-phase microstructure of long-term aged type 316 stainless steel ［J］. Journal of Materials Research ， 2006 ， 21 （ 5 ）： 1229 - 1236 .

Fonda R W ， Lauridsen E M ， Ludwig W ， et al . Two-dimensional and three-dimensional analyses of σ precipitates and porosity in a superaustenitic stainless steel ［J］. Metallurgical and Materials Transactions A ， 2007 ， 38 （ 11 ）： 2721 - 2726 .

曾莉，张威，王岩 . 超级奥式体不锈钢偏析行为及元素再分配规律［J］. 材料热处理学报， 2015 ， 4 ： 232 - 238 .

Banovic S W ， Dupont J N ， Marder A R . Dilution and microsegregation in dissimilar metal welds between super austenitic stainless steel and nickel base alloys ［J］. Science and Technology of Welding and Joining ， 2002 ， 7 ： 374 - 383 .

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