Persistent Precipitation Phase Transformation of S30432 Steeel at 650 ℃ and Its Effect on Material Property

Wang Longfei; Yang Peng; Wu Junjie; Shen Hongying; Wang Hao; Zhang Yanyan; Cai Xiayan

doi:10.20057/j.1003-8620.2025-00118

您当前的位置：

首页 >

文章列表页 >

Persistent Precipitation Phase Transformation of S30432 Steeel at 650 ℃ and Its Effect on Material Property

Application and Service | 更新时间：2026-03-03

- Persistent Precipitation Phase Transformation of S30432 Steeel at 650 ℃ and Its Effect on Material Property
- Special Steel Vol. 47, Issue 2, Pages: 140-146(2026)
- 作者机构：
  
  浙江久立特材科技股份有限公司研究院，湖州 313028
- 作者简介：
- 基金信息：
- DOI：10.20057/j.1003-8620.2025-00118
  CLC： TG142.1
- Received：25 April 2025，
  
  Published：30 March 2026
- 稿件说明：
移动端阅览
王龙飞,杨鹏,吴俊洁等.S30432钢650 ℃持久析出相变化及其对性能的影响[J].特殊钢,2026,47(02):140-146.

Wang Longfei,Yang Peng,Wu Junjie,et al.Persistent Precipitation Phase Transformation of S30432 Steeel at 650 ℃ and Its Effect on Material Property[J].Special Steel,2026,47(02):140-146.
王龙飞,杨鹏,吴俊洁等.S30432钢650 ℃持久析出相变化及其对性能的影响[J].特殊钢,2026,47(02):140-146. DOI： 10.20057/j.1003-8620.2025-00118.

Wang Longfei,Yang Peng,Wu Junjie,et al.Persistent Precipitation Phase Transformation of S30432 Steeel at 650 ℃ and Its Effect on Material Property[J].Special Steel,2026,47(02):140-146. DOI： 10.20057/j.1003-8620.2025-00118.

摘要

采用扫描电子显微镜（SEM）、电子背散射衍射（EBSD）及透射电子显微镜（TEM）等分析方法，结合Thermo-Calc热力学模拟计算结果，系统研究了S30432钢650 ℃持久后析出相的演变规律及其对材料持久塑性的作用机制。结果表明，S30432钢650 ℃持久后基体中存在大尺寸Nb（C，N）相，高应力下易开裂形成裂纹源；且随着持久时间逐渐增加，晶界及孪晶界析出相M

连续分布且明显粗化，易形成孔洞；在650 ℃、9 146~24 432 h条件下，晶界处生成块状σ相，σ相数量随着持久时间延长而增加并伴随显著粗化现象，促进微孔形核，加速了沿晶裂纹的萌生与扩展进程。这些高温持久过程中析出相的变化均对S30432钢650 ℃持久塑性的降低产生重要影响。

Abstract

The persistent precipitation phase transformation of S30432 steel after 650 ℃ creep and its effect mechanism on the material's creep ductility were systematically investigated by using analytical methods such as scanning electron microscopy （SEM）， electron backscatter diffraction （EBSD）， and transmission electron microscopy （TEM）， in combination with the results of thermodynamic simulation calculations using Thermo-Calc. Result

s show that：after 650°C creep， large-sized Nb（C，N） phases exists in the matrix of S30432 steel， which are prone to cracking and forming crack sources under high stress. With the increase of creep time， the precipitates phase M

at grain boundaries and twin boundaries continuously distribute and significantly coarsen， which is conducive to the formation of voids. At 650 ℃and 9 146 h-24 432 h， blockyσphase is generated at the grain boundary. The number of σ phase increases with the prolongation of creep time， accompanied by significant coarsening phenomenon， which promotes the nucleation of micropores and accelerates the germination and propagation of the crack along the grain.The changes in the precipitated phases during these high-temperature long-term processes all have an important impact on the reduction of the creep ductility of S30432 steel at 650°C.

关键词

Keywords

references

杨　岩，程世长，杨　钢 . Super304H锅炉钢的开发和研究现状［J］. 特殊钢， 2002 ， 23 （ 1 ）： 27 - 29 .

Iseda A ， Okada H ， Semba H ， et al . Long term creep properties and microstructure of SUPER304H， TP347HFG and HR3C for A-USC boilers ［J］. Energy Materials ， 2007 ， 2 （ 4 ）： 199 - 206 .

杨希锐，江宝世，胡锋涛，等 . 高温长期服役S30432钢管的组织与性能［J］. 金属热处理， 2024 ， 49 （ 5 ）： 17 - 22 .

Li Y ， Wang X . Effect of aging temperatures on the microstructural stability and mechanical properties of Super304H steel ［J］. Journal of Materials Research and Technology ， 2025 ， 34 ： 2651 - 2661 .

Jiang J ， Zhu L H . Strengthening mechanisms of precipitates in S30432 heat-resistant steel during short-term aging ［J］. Materials Science and Engineering： A ， 2012 ， 539 ： 170 - 176 .

唐　波，朱丽慧，王起江 . S30432钢700 ℃持久σ相的析出及其对性能的影响［J］. 动力工程学报， 2014 ， 34 （ 10 ）： 827 - 832 .

蒙殿武，殷　鹰，张学星，等 . 超超临界机组屏式过热器爆管原因［J］. 理化检验-物理分册， 2023 ， 59 （ 8 ）： 67 - 70 .

高彩玲，贠　柯，王若虹，等 . 奥氏体耐热钢高温持久强度研究［J］. 价值工程， 2023 ， 42 （ 28 ）： 124 - 126 .

Zhu W ， Zhang Z Y ， Long D J ， et al . Creep deformation behavior， microstructure evolution， and damage mechanism of Super304H ODS steel ［J］. Metals ， 2023 ， 13 （ 6 ）： 1106 .

Tian X ， Yang B X ， Ding L L ， et al . Microstructural evolution of Super304H stainless steel during high-temperature creep rupture ［J］. IOP Conference Series： Materials Science and Engineering ， 2020 ， 770 （ 1 ）： 012042 .

刘俊建，刘　润，王万里，等 . 晶粒异常长大对服役Super304H管力学性能的影响［J］. 材料热处理学报， 2021 ， 42 （ 4 ）： 125 - 131 .

Sourmail T . Precipitation in creep resistant austenitic stainless steels ［J］. Materials Science and Technology ， 2001 ， 17 （ 1 ）： 1 - 14 .

胡国栋，冯　锐，李书志，等 . 奥氏体耐热不锈钢中析出相研究进展［J］. 热加工工艺， 2022 ， 51 （ 18 ）： 6 - 11+17 .

Zhang J L ， Hu Z F ， Gao Z Y . Microstructure evolution of Super304H austenitic steel during long-term creep at 700 ℃ ［J］. Materials ， 2025 ， 18 （ 8 ）： 1756 .

Kimura K ， Sawada K . Creep deformation property and creep life evaluation of Super304H ［J］. Journal of Pressure Vessel Technology ， 2022 ， 144 （ 2 ）： 021507 .

Views

下载量

CSCD

CNKI被引量

Alert me when the article has been cited

提交

Tools

Publicity Resources

Effect of High Temperature Tempering on Microstructure and Mechanical Properties of High Nitrogen Martensitic Stainless Bearing Steel

Effect of Smelting Process on the Microstructure and Properties of 23MnNiMoCr54 Mining Round Chain Links

Effect of Nitrogen Infiltration on Microstructure and Properties of 12Cr Ferritic-Martensitic Steel

Impact of the Annealing Temperature on the Magnetic and Mechanical Characteristics of Thin-gauge Non-oriented Electrical Steel

Related Author

Wang Longfei

Yang Teng

Shi Zhiyue

Wang Rui

Qin Jin

Kang Yan

Yan Zhijie

Wang Zihao

Related Institution

State Key Laboratory of Advanced Stainless Steel

Shanxi Key Laboratory of Advanced Metal Material for Special Environments， North University of China

School of Materials Science and Engineering， North University of China

Changchun Northeast Chain Conveyor Manufacturing

Institute of Carbon Neutrality， University of Science and Technology Beijing

⁰