Subsurface microstructural degeneration of Super304H boiler tube under the synergy of fireside corrosion and creep stress

Xiaofeng Yang; Yaxin Xu; Jintao Lu; Zhiqi Guo; Yingying Dang; Jinyang Huang; Wenya Li

doi:10.1016/j.corsci.2022.110250

Subsurface microstructural degeneration of Super304H boiler tube under the synergy of fireside corrosion and creep stress

Xiaofeng Yang, Yaxin Xu, Jintao Lu, Zhiqi Guo, Yingying Dang, Jinyang Huang, Wenya Li

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

The deterioration mechanism of creep rupture life of Super304H in a lab simulated fireside corrosion environment at 650 °C is investigated. This includes in-depth study of microstructural evolution in grain structure, elemental distribution and precipitates. Results reveal a two-thirds reduction in creep life by corrosive media. The major reason for this degradation under the synergy of high-temperature corrosion and creep stress is considered to be more serious dynamic recrystallization and martensitic transformation occurring in the surface layer. The fractography of the rupture specimens indicates creep voids coarsening is responsible for fracture in both conditions.

Original language	English
Article number	110250
Journal	Corrosion Science
Volume	200
DOIs	https://doi.org/10.1016/j.corsci.2022.110250
State	Published - 15 May 2022

Keywords

A. Stainless steel
B. SEM
B. STEM
C. Creep
C. High temperature corrosion

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10.1016/j.corsci.2022.110250

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title = "Subsurface microstructural degeneration of Super304H boiler tube under the synergy of fireside corrosion and creep stress",

abstract = "The deterioration mechanism of creep rupture life of Super304H in a lab simulated fireside corrosion environment at 650 °C is investigated. This includes in-depth study of microstructural evolution in grain structure, elemental distribution and precipitates. Results reveal a two-thirds reduction in creep life by corrosive media. The major reason for this degradation under the synergy of high-temperature corrosion and creep stress is considered to be more serious dynamic recrystallization and martensitic transformation occurring in the surface layer. The fractography of the rupture specimens indicates creep voids coarsening is responsible for fracture in both conditions.",

keywords = "A. Stainless steel, B. SEM, B. STEM, C. Creep, C. High temperature corrosion",

author = "Xiaofeng Yang and Yaxin Xu and Jintao Lu and Zhiqi Guo and Yingying Dang and Jinyang Huang and Wenya Li",

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T1 - Subsurface microstructural degeneration of Super304H boiler tube under the synergy of fireside corrosion and creep stress

AU - Yang, Xiaofeng

AU - Xu, Yaxin

AU - Lu, Jintao

AU - Guo, Zhiqi

AU - Dang, Yingying

AU - Huang, Jinyang

AU - Li, Wenya

PY - 2022/5/15

Y1 - 2022/5/15

N2 - The deterioration mechanism of creep rupture life of Super304H in a lab simulated fireside corrosion environment at 650 °C is investigated. This includes in-depth study of microstructural evolution in grain structure, elemental distribution and precipitates. Results reveal a two-thirds reduction in creep life by corrosive media. The major reason for this degradation under the synergy of high-temperature corrosion and creep stress is considered to be more serious dynamic recrystallization and martensitic transformation occurring in the surface layer. The fractography of the rupture specimens indicates creep voids coarsening is responsible for fracture in both conditions.

AB - The deterioration mechanism of creep rupture life of Super304H in a lab simulated fireside corrosion environment at 650 °C is investigated. This includes in-depth study of microstructural evolution in grain structure, elemental distribution and precipitates. Results reveal a two-thirds reduction in creep life by corrosive media. The major reason for this degradation under the synergy of high-temperature corrosion and creep stress is considered to be more serious dynamic recrystallization and martensitic transformation occurring in the surface layer. The fractography of the rupture specimens indicates creep voids coarsening is responsible for fracture in both conditions.

KW - A. Stainless steel

KW - B. SEM

KW - B. STEM

KW - C. Creep

KW - C. High temperature corrosion

UR - http://www.scopus.com/inward/record.url?scp=85126853117&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2022.110250

DO - 10.1016/j.corsci.2022.110250

M3 - 文章

AN - SCOPUS:85126853117

SN - 0010-938X

VL - 200

JO - Corrosion Science

JF - Corrosion Science

M1 - 110250

ER -

Subsurface microstructural degeneration of Super304H boiler tube under the synergy of fireside corrosion and creep stress

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Keywords

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