Study on Microstructure and Mechanical Properties of Heat Resistant Steel TP347H FG in Ultra-supercritical Unit After 50 000 Hours of Service

FU Shuo; LU Jintao; HUANG Jinyang; XU Yaxin; DANG Yingying; LI Wenya

doi:10.19805/j.cnki.jcspe.2025.240040

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Study on Microstructure and Mechanical Properties of Heat Resistant Steel TP347H FG in Ultra-supercritical Unit After 50 000 Hours of Service

更新时间：2026-01-27

- Study on Microstructure and Mechanical Properties of Heat Resistant Steel TP347H FG in Ultra-supercritical Unit After 50 000 Hours of Service
- Chinese Journal of Power Engineering Vol. 45, Issue 4, Pages: 489-495(2025)
- 作者机构：
  
  1. 西安热工研究院有限公司高效灵活煤电及碳捕集利用封存全国重点实验室,陕西,西安,710032
  2. 西北工业大学材料学院,陕西,西安,710072
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.240040
  CLC： TM621;TG142.73
- Published Online：28 April 2025，
  
  Published：2025
- 稿件说明：
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傅硕,鲁金涛,黄锦阳,徐雅欣,党莹樱,李文亚. TP347H FG耐热钢超超临界机组服役50 000 h后组织与力学性能研究动力工程学报, 2025, 45(4): 489-495 https://doi.

org/10.19805/j.cnki.jcspe.2025.240040
傅硕,鲁金涛,黄锦阳,徐雅欣,党莹樱,李文亚. TP347H FG耐热钢超超临界机组服役50 000 h后组织与力学性能研究动力工程学报, 2025, 45(4): 489-495 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.240040.

org/10.19805/j.cnki.jcspe.2025.240040 DOI：

摘要

为研究TP347H FG管材高温服役安全性

对某600 ℃超超临界火电机组工况环境热暴露50 000 h的TP347H FG管材微观组织、腐蚀产物及力学性能进行了研究。采用金相显微镜、X射线衍射、扫描电子显微镜及能谱分析等测试手段

对服役后工件的管壁内外侧晶粒度、腐蚀机制、拉伸性能进行了综合分析。结果表明:相较于未服役工件

服役后工件表层出现晶粒细化层厚度降低现象;向火侧与背火侧氧化层均呈现双层结构

在高温烟气环境下有效增强了材料耐蚀性能;向火侧与背火侧由于晶内细小析出相的析出

其屈服极限相较于未服役管材有所提高

但析出相弱化了晶界的作用

致使工件延伸率大幅降低

并出现局部脆性断裂的特征。

Abstract

To investigate the high-temperature service safety of TP347H FG pipe material

a study was conducted on the microstructure

corrosion products

and mechanical properties of TP347H FG pipe material exposed to a thermal environment of a 600 ℃ ultra-supercritical thermal power unit for 50 000 hours. A comprehensive analysis was conducted on the grain size of the inner and outer walls of the workpiece

the corrosion mechanism

and the tensile properties after service

using metallographic microscopy

X-ray diffraction

scanning electron microscopy

and energy-dispersive spectroscopy analysis. Results show that the surface of the service-exposed workpiece shows a reduction in the thickness of the grain refinement layer

compared to the as-received workpiece. Both the fire-facing side and the non-fire-facing side oxidation layers exhibit a double-layer structure

which effectively enhances the corrosion resistance of the material in high-temperature flue gas environment. Due to the precipitation of fine intragranular phases of both the fire-facing side and the non-fire-facing side

the yield limit is improved compared to the as-received pipe material. However

the precipitation phases weaken the role of the grain boundaries

resulting in a significant reduction in the elongation of the workpiece and the emergence of local brittle fracture.

关键词

Keywords

references

吴新鹏.既有火力发电厂综合品质提升策略研究[D].济南:山东建筑大学,2023.

蒋敏华, 黄斌. 燃煤发电技术发展展望[J]. 中国电机工程学报, 2012, 32(29): 1-8, 19. JIANG Minhua, HUANG Bin. Prospects on coal-fired power generation technology development[J]. Proceedings of the CSEE, 2012, 32(29): 1-8, 19.

YEO W H, FRY A T, PURBOLAKSONO J, et al. Oxide scale growth and presumed exfoliation in a 700 ℃ or higher steam condition: a simulation study for future operations of ultra-supercritical power plants[J]. The Journal of Supercritical Fluids, 2014, 92: 215-222.

杨啸峰, 徐雅欣, 黄锦阳, 等. 火电机组锅炉受热面合金烟气腐蚀与应力协同作用失效行为研究进展[J]. 材料工程, 2022, 50(5): 100-111. YANG Xiaofeng, XU Yaxin, HUANG Jinyang, et al. Research progress in failure behavior of alloys for hot-section components in thermal power plant boilers under synergism of fireside corrosion and stress[J]. Journal of Materials Engineering, 2022, 50(5): 100-111.

LI Hao, CHEN Weixing. Stability of MnCr 2 O 4 spinel and Cr 2 O 3 in high temperature carbonaceous environments with varied oxygen partial pressures[J ] . Corrosion Science, 2010, 52(7): 2481-2488.

FOLKESON N, JONSSON T, HALVARSSON M, et al. The influence of small amounts of KCl(s) on the high temperature corrosion of a Fe-2.25Cr-1Mo steel at 400 and 500 ℃[J]. Materials and Corrosion, 2011, 62(7): 606-615.

LI Jian, CAO Tieshan, ZHANG Conghui, et al. Failure analysis of reheater tubes in a 350 MW supercritical circulating fluidized bed boiler[J]. Engineering Failure Analysis, 2022, 137: 106285.

成丁南, 张知翔, 边宝, 等. 5种电站锅炉过热器用材料高温腐蚀试验研究[J]. 动力工程学报, 2012, 32(11): 891-897. CHENG Dingnan, ZHANG Zhixiang, BIAN Bao, et al. Experimental study on high temperature corrosion of five superheater materials for power plant boilers[J]. Journal of Chinese Society of Power Engineering, 2012, 32(11): 891-897.

田晓, 徐慧, 刘响亮, 等. Super304H管材高温服役过程组织与性能的变化[J]. 动力工程学报, 2016, 36(8): 671-676. TIAN Xiao, XU Hui, LIU Xiangliang, et al. Microstructure and mechanical properties of domestic Super304H tubes during high-temperature services[J]. Journal of Chinese Society of Power Engineering, 2016, 36(8): 671-676.

YANG Xiaofeng, XU Yaxin, LU Jintao, et al. Subsurface microstructural degeneration of Super304H boiler tube under the synergy of fireside corrosion and creep stress[J]. Corrosion Science, 2022, 200: 110250.

殷尊, 蔡晖, 刘鸿国. 新型耐热钢HR3C在超超临界机组高温服役25 000 h后的性能研究[J]. 中国电机工程学报, 2011, 31(29): 103-109. YIN Zun, CAI Hui, LIU Hongguo. Performance on new heat-resistant steel HR3C in the ultra-supercritical units after service at high temperature for 25 000 hours[J]. Proceedings of the CSEE, 2011, 31(29): 103-109.

吕一楠, 刘树涛, 张红军. HR3C钢内压蠕变试验后显微组织与力学性能试验研究[J]. 动力工程学报, 2013, 33(10): 822-828. L Yinan, LIU Shutao, ZHANG Hongjun. Experimental study on microstructure and mechanical properties of HR3C tubes after internal pressure creep test[J]. Journal of Chinese Society of Power Engineering, 2013, 33(10): 822-828.

宫俊峰. 超临界锅炉用TP347HFG钢的材质特性及焊接工艺分析[J]. 焊接技术, 2020, 49(7): 44-47. GONG Junfeng. Properties and welding process of TP347HFG steel for supercritical boiler[J]. Welding Technology, 2020, 49(7): 44-47.

WANG W F, WU M J. Effect of silicon content and aging time on density, hardness, toughness and corrosion resistance of sintered 303LSC-Si stainless steels[J]. Materials Science and Engineering: A, 2006, 425(1/2): 167-171.

GOLAN＇SKI G, PURZYN＇SKA H. Effect of service on microstructure and mechanical properties of Nb-stabilised austenitic stainless steel[J]. International Journal of Pressure Vessels and Piping, 2022, 195: 104574.

FU Jiapeng, ZHOU Qulan, LI Na, et al. Effects of external stresses on hot corrosion behavior of stainless steel TP347HFG[J]. Corrosion Science, 2016, 104: 103-111.

OU P, XING Hui, WANG X L, et al. Tensile yield behavior and precipitation strengthening mechanism in Super304H steel[J]. Materials Science and Engineering: A, 2014, 600: 171-175.

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