Effect of prior austenite grain boundaries on corrosion fatigue behaviors of E690 high strength low alloy steel in simulated marine atmosphere

Hongchi Ma; Linheng Chen; Jinbin Zhao; Yunhua Huang; Xiaogang Li

doi:10.1016/j.msea.2019.138884

Effect of prior austenite grain boundaries on corrosion fatigue behaviors of E690 high strength low alloy steel in simulated marine atmosphere

Hongchi Ma
, Linheng Chen
, Jinbin Zhao
, Yunhua Huang^*
, Xiaogang Li

^*Corresponding author for this work

University of Science and Technology Beijing
Nanjing Iron and Steel Co., Ltd.

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

59 Scopus citations

Abstract

A correlative method based on TEM, EBSD, and SKPFM was used to investigate the corrosion fatigue behaviors of E690 steel in simulated marine atmosphere. Results revealed E690 steel is susceptible to corrosion fatigue cracking in this environment and PAGBs play a vital role in crack initiation and propagation. Intergranular microcracks were prone to initiate along PAGBs probably due to high-angle grain boundaries and micro-galvanic effect between martensite-austenite (M-A) constitutes and adjacent ferrite. Segregation of alloy elements within M-A constitutes introduced Volta potential variation between M-A constitutes and adjacent ferrite, resulting in micro-galvanic corrosion between them and eventually intergranular crack initiation along PAGBs.

Original language	English
Article number	138884
Journal	Materials Science and Engineering: A
Volume	773
DOIs	https://doi.org/10.1016/j.msea.2019.138884
State	Published - 31 Jan 2020
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 14 Life Below Water

Keywords

Corrosion fatigue
High strength low alloy (HSLA) steel
M-A constitutes
Marine atmosphere
Prior austenite grain boundary (PAGB)

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10.1016/j.msea.2019.138884

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@article{c01b2dd4a4ac4461b0611534fd334713,

title = "Effect of prior austenite grain boundaries on corrosion fatigue behaviors of E690 high strength low alloy steel in simulated marine atmosphere",

abstract = "A correlative method based on TEM, EBSD, and SKPFM was used to investigate the corrosion fatigue behaviors of E690 steel in simulated marine atmosphere. Results revealed E690 steel is susceptible to corrosion fatigue cracking in this environment and PAGBs play a vital role in crack initiation and propagation. Intergranular microcracks were prone to initiate along PAGBs probably due to high-angle grain boundaries and micro-galvanic effect between martensite-austenite (M-A) constitutes and adjacent ferrite. Segregation of alloy elements within M-A constitutes introduced Volta potential variation between M-A constitutes and adjacent ferrite, resulting in micro-galvanic corrosion between them and eventually intergranular crack initiation along PAGBs.",

keywords = "Corrosion fatigue, High strength low alloy (HSLA) steel, M-A constitutes, Marine atmosphere, Prior austenite grain boundary (PAGB)",

author = "Hongchi Ma and Linheng Chen and Jinbin Zhao and Yunhua Huang and Xiaogang Li",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2020",

month = jan,

day = "31",

doi = "10.1016/j.msea.2019.138884",

language = "英语",

volume = "773",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

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}

TY - JOUR

T1 - Effect of prior austenite grain boundaries on corrosion fatigue behaviors of E690 high strength low alloy steel in simulated marine atmosphere

AU - Ma, Hongchi

AU - Chen, Linheng

AU - Zhao, Jinbin

AU - Huang, Yunhua

AU - Li, Xiaogang

PY - 2020/1/31

Y1 - 2020/1/31

N2 - A correlative method based on TEM, EBSD, and SKPFM was used to investigate the corrosion fatigue behaviors of E690 steel in simulated marine atmosphere. Results revealed E690 steel is susceptible to corrosion fatigue cracking in this environment and PAGBs play a vital role in crack initiation and propagation. Intergranular microcracks were prone to initiate along PAGBs probably due to high-angle grain boundaries and micro-galvanic effect between martensite-austenite (M-A) constitutes and adjacent ferrite. Segregation of alloy elements within M-A constitutes introduced Volta potential variation between M-A constitutes and adjacent ferrite, resulting in micro-galvanic corrosion between them and eventually intergranular crack initiation along PAGBs.

AB - A correlative method based on TEM, EBSD, and SKPFM was used to investigate the corrosion fatigue behaviors of E690 steel in simulated marine atmosphere. Results revealed E690 steel is susceptible to corrosion fatigue cracking in this environment and PAGBs play a vital role in crack initiation and propagation. Intergranular microcracks were prone to initiate along PAGBs probably due to high-angle grain boundaries and micro-galvanic effect between martensite-austenite (M-A) constitutes and adjacent ferrite. Segregation of alloy elements within M-A constitutes introduced Volta potential variation between M-A constitutes and adjacent ferrite, resulting in micro-galvanic corrosion between them and eventually intergranular crack initiation along PAGBs.

KW - Corrosion fatigue

KW - High strength low alloy (HSLA) steel

KW - M-A constitutes

KW - Marine atmosphere

KW - Prior austenite grain boundary (PAGB)

UR - https://www.scopus.com/pages/publications/85078732185

U2 - 10.1016/j.msea.2019.138884

DO - 10.1016/j.msea.2019.138884

M3 - 文章

AN - SCOPUS:85078732185

SN - 0921-5093

VL - 773

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

M1 - 138884

ER -

Effect of prior austenite grain boundaries on corrosion fatigue behaviors of E690 high strength low alloy steel in simulated marine atmosphere

Abstract

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Keywords

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