Creep stress induced pit-to-crack transition of Super304H in fireside corrosion

Xiaofeng Yang; Yaxin Xu; Shuo Fu; Jintao Lu; Jinyang Huang; Wenya Li

doi:10.1016/j.corsci.2024.112470

Creep stress induced pit-to-crack transition of Super304H in fireside corrosion

Xiaofeng Yang
, Yaxin Xu
, Shuo Fu
, Jintao Lu
, Jinyang Huang
, Wenya Li

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian
Thermal Power Research Institute

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

6 Scopus citations

Abstract

Parallel experiments on creep-rupture and corrosion of Super304H were conducted at 650 ℃ in a simulated ultra-supercritical fireside environment to study the impact of creep stress on fireside corrosion. The corrosion products, corrosion pits, grain structure and phase composition, and surface cracks of creep-corrosion and corrosion samples were compared. Results show that stresses not only affect the formation and growth of corrosion products, but also widen the recrystallization zone in corrosion affected area. A model of surface cracking from corrosion pits under the synergy of fireside corrosion and creep stress was proposed.

Original language	English
Article number	112470
Journal	Corrosion Science
Volume	240
DOIs	https://doi.org/10.1016/j.corsci.2024.112470
State	Published - Nov 2024

Keywords

Austenitic steel
Creep stress
Fireside corrosion

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10.1016/j.corsci.2024.112470

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title = "Creep stress induced pit-to-crack transition of Super304H in fireside corrosion",

abstract = "Parallel experiments on creep-rupture and corrosion of Super304H were conducted at 650 ℃ in a simulated ultra-supercritical fireside environment to study the impact of creep stress on fireside corrosion. The corrosion products, corrosion pits, grain structure and phase composition, and surface cracks of creep-corrosion and corrosion samples were compared. Results show that stresses not only affect the formation and growth of corrosion products, but also widen the recrystallization zone in corrosion affected area. A model of surface cracking from corrosion pits under the synergy of fireside corrosion and creep stress was proposed.",

keywords = "Austenitic steel, Creep stress, Fireside corrosion",

author = "Xiaofeng Yang and Yaxin Xu and Shuo Fu and Jintao Lu and Jinyang Huang and Wenya Li",

note = "Publisher Copyright: {\textcopyright} 2024",

year = "2024",

month = nov,

doi = "10.1016/j.corsci.2024.112470",

language = "英语",

volume = "240",

journal = "Corrosion Science",

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T1 - Creep stress induced pit-to-crack transition of Super304H in fireside corrosion

AU - Yang, Xiaofeng

AU - Xu, Yaxin

AU - Fu, Shuo

AU - Lu, Jintao

AU - Huang, Jinyang

AU - Li, Wenya

PY - 2024/11

Y1 - 2024/11

N2 - Parallel experiments on creep-rupture and corrosion of Super304H were conducted at 650 ℃ in a simulated ultra-supercritical fireside environment to study the impact of creep stress on fireside corrosion. The corrosion products, corrosion pits, grain structure and phase composition, and surface cracks of creep-corrosion and corrosion samples were compared. Results show that stresses not only affect the formation and growth of corrosion products, but also widen the recrystallization zone in corrosion affected area. A model of surface cracking from corrosion pits under the synergy of fireside corrosion and creep stress was proposed.

AB - Parallel experiments on creep-rupture and corrosion of Super304H were conducted at 650 ℃ in a simulated ultra-supercritical fireside environment to study the impact of creep stress on fireside corrosion. The corrosion products, corrosion pits, grain structure and phase composition, and surface cracks of creep-corrosion and corrosion samples were compared. Results show that stresses not only affect the formation and growth of corrosion products, but also widen the recrystallization zone in corrosion affected area. A model of surface cracking from corrosion pits under the synergy of fireside corrosion and creep stress was proposed.

KW - Austenitic steel

KW - Creep stress

KW - Fireside corrosion

UR - https://www.scopus.com/pages/publications/85204371026

U2 - 10.1016/j.corsci.2024.112470

DO - 10.1016/j.corsci.2024.112470

M3 - 文章

AN - SCOPUS:85204371026

SN - 0010-938X

VL - 240

JO - Corrosion Science

JF - Corrosion Science

M1 - 112470

ER -

Creep stress induced pit-to-crack transition of Super304H in fireside corrosion

Abstract

Keywords

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