Creep rupture of a Ni-Fe based model alloy under simulated fireside corrosion in coal-fired boilers

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

doi:10.1016/j.corsci.2023.111536

Creep rupture of a Ni-Fe based model alloy under simulated fireside corrosion in coal-fired boilers

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

School of Materials Sience and Engineering

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

3 Scopus citations

Abstract

The influence of fireside corrosion on creep rupture of a Ni-Fe based model alloy was investigated by comparing the rupture life, fractography and microstructure of specimens in fireside corrosion and air. Results showed that the rupture life at 140 MPa in fireside corrosion is only 40% of that in air. The internal sulfidation along grain boundaries promoted the initiation of intergranular cracks, and was responsible for the premature rupture. The surface collapse in fireside corrosion was attributed to the outward propagation of internal cracks, while surface cracks in air originated from the formation of recrystallized grains in the surface layer.

Original language	English
Article number	111536
Journal	Corrosion Science
Volume	224
DOIs	https://doi.org/10.1016/j.corsci.2023.111536
State	Published - Nov 2023

Keywords

Creep rupture
Fireside corrosion
Ni-Fe based superalloy
Sulfidation

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10.1016/j.corsci.2023.111536

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title = "Creep rupture of a Ni-Fe based model alloy under simulated fireside corrosion in coal-fired boilers",

abstract = "The influence of fireside corrosion on creep rupture of a Ni-Fe based model alloy was investigated by comparing the rupture life, fractography and microstructure of specimens in fireside corrosion and air. Results showed that the rupture life at 140 MPa in fireside corrosion is only 40% of that in air. The internal sulfidation along grain boundaries promoted the initiation of intergranular cracks, and was responsible for the premature rupture. The surface collapse in fireside corrosion was attributed to the outward propagation of internal cracks, while surface cracks in air originated from the formation of recrystallized grains in the surface layer.",

keywords = "Creep rupture, Fireside corrosion, Ni-Fe based superalloy, Sulfidation",

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

note = "Publisher Copyright: {\textcopyright} 2023",

year = "2023",

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doi = "10.1016/j.corsci.2023.111536",

language = "英语",

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T1 - Creep rupture of a Ni-Fe based model alloy under simulated fireside corrosion in coal-fired boilers

AU - Yang, Xiaofeng

AU - Xu, Yaxin

AU - Lu, Jintao

AU - Huang, Jinyang

AU - Dang, Yingying

AU - Li, Wenya

PY - 2023/11

Y1 - 2023/11

N2 - The influence of fireside corrosion on creep rupture of a Ni-Fe based model alloy was investigated by comparing the rupture life, fractography and microstructure of specimens in fireside corrosion and air. Results showed that the rupture life at 140 MPa in fireside corrosion is only 40% of that in air. The internal sulfidation along grain boundaries promoted the initiation of intergranular cracks, and was responsible for the premature rupture. The surface collapse in fireside corrosion was attributed to the outward propagation of internal cracks, while surface cracks in air originated from the formation of recrystallized grains in the surface layer.

AB - The influence of fireside corrosion on creep rupture of a Ni-Fe based model alloy was investigated by comparing the rupture life, fractography and microstructure of specimens in fireside corrosion and air. Results showed that the rupture life at 140 MPa in fireside corrosion is only 40% of that in air. The internal sulfidation along grain boundaries promoted the initiation of intergranular cracks, and was responsible for the premature rupture. The surface collapse in fireside corrosion was attributed to the outward propagation of internal cracks, while surface cracks in air originated from the formation of recrystallized grains in the surface layer.

KW - Creep rupture

KW - Fireside corrosion

KW - Ni-Fe based superalloy

KW - Sulfidation

UR - http://www.scopus.com/inward/record.url?scp=85171884286&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2023.111536

DO - 10.1016/j.corsci.2023.111536

M3 - 文章

AN - SCOPUS:85171884286

SN - 0010-938X

VL - 224

JO - Corrosion Science

JF - Corrosion Science

M1 - 111536

ER -

Creep rupture of a Ni-Fe based model alloy under simulated fireside corrosion in coal-fired boilers

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Keywords

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