Effect of Tempering Temperature on the Microstructure and Stress Corrosion Cracing Susceptibility of Ultra-High-Strength Mooring Steel

Menghao Liu; Huihua Guo; Zhiyong Liu; Cuiwei Du; Chuang Guo; Xiaoqin Zhan; Xiaogang Li

doi:10.1007/s11665-021-05764-7

Effect of Tempering Temperature on the Microstructure and Stress Corrosion Cracing Susceptibility of Ultra-High-Strength Mooring Steel

Menghao Liu
, Huihua Guo
, Zhiyong Liu^*
, Cuiwei Du^*
, Chuang Guo
, Xiaoqin Zhan
, Xiaogang Li

^*Corresponding author for this work

University of Science and Technology Beijing
Ltd.

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

6 Scopus citations

Abstract

Mooring chain steel has been widely used for stabilizing offshore platforms and suffers from stress corrosion cracking. Herein, the microstructure difference, its relation to strength and susceptibility of stress corrosion cracking after tempered at different temperatures have been studied. Result shows increasing tempering temperature increases the proportion of low value CSL boundaries, decreases the local misorientation angle and promotes the precipitation of carbides. These factors induced the decrease of SCC susceptibility at higher tempering temperature. The resistance to SCC at 640 °C tempering temperature is about 20% higher than that of 580 °C at − 1000 mV_SCE. The main strengthening mechanism of the ultra-high-strength steel is ultra-fine grain strengthening mechanism, precipitation strengthening mechanism, and dislocation strengthening mechanism. Increasing tempering temperature from 580 to 640 °C decreases the yield strength by 85 MPa, which is mainly attributed to larger carbides size.

Original language	English
Pages (from-to)	4217-4229
Number of pages	13
Journal	Journal of Materials Engineering and Performance
Volume	30
Issue number	6
DOIs	https://doi.org/10.1007/s11665-021-05764-7
State	Published - Jun 2021
Externally published	Yes

Keywords

microstructure
mooring chain steel
stress corrosion cracking
tempering temperature

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10.1007/s11665-021-05764-7

Cite this

@article{36e97553af8d4c0db9c5a326703d338b,

title = "Effect of Tempering Temperature on the Microstructure and Stress Corrosion Cracing Susceptibility of Ultra-High-Strength Mooring Steel",

abstract = "Mooring chain steel has been widely used for stabilizing offshore platforms and suffers from stress corrosion cracking. Herein, the microstructure difference, its relation to strength and susceptibility of stress corrosion cracking after tempered at different temperatures have been studied. Result shows increasing tempering temperature increases the proportion of low value CSL boundaries, decreases the local misorientation angle and promotes the precipitation of carbides. These factors induced the decrease of SCC susceptibility at higher tempering temperature. The resistance to SCC at 640 °C tempering temperature is about 20\% higher than that of 580 °C at − 1000 mVSCE. The main strengthening mechanism of the ultra-high-strength steel is ultra-fine grain strengthening mechanism, precipitation strengthening mechanism, and dislocation strengthening mechanism. Increasing tempering temperature from 580 to 640 °C decreases the yield strength by 85 MPa, which is mainly attributed to larger carbides size.",

keywords = "microstructure, mooring chain steel, stress corrosion cracking, tempering temperature",

author = "Menghao Liu and Huihua Guo and Zhiyong Liu and Cuiwei Du and Chuang Guo and Xiaoqin Zhan and Xiaogang Li",

note = "Publisher Copyright: {\textcopyright} 2021, ASM International.",

year = "2021",

month = jun,

doi = "10.1007/s11665-021-05764-7",

language = "英语",

volume = "30",

pages = "4217--4229",

journal = "Journal of Materials Engineering and Performance",

issn = "1059-9495",

publisher = "Springer New York",

number = "6",

}

TY - JOUR

T1 - Effect of Tempering Temperature on the Microstructure and Stress Corrosion Cracing Susceptibility of Ultra-High-Strength Mooring Steel

AU - Liu, Menghao

AU - Guo, Huihua

AU - Liu, Zhiyong

AU - Du, Cuiwei

AU - Guo, Chuang

AU - Zhan, Xiaoqin

AU - Li, Xiaogang

PY - 2021/6

Y1 - 2021/6

N2 - Mooring chain steel has been widely used for stabilizing offshore platforms and suffers from stress corrosion cracking. Herein, the microstructure difference, its relation to strength and susceptibility of stress corrosion cracking after tempered at different temperatures have been studied. Result shows increasing tempering temperature increases the proportion of low value CSL boundaries, decreases the local misorientation angle and promotes the precipitation of carbides. These factors induced the decrease of SCC susceptibility at higher tempering temperature. The resistance to SCC at 640 °C tempering temperature is about 20% higher than that of 580 °C at − 1000 mVSCE. The main strengthening mechanism of the ultra-high-strength steel is ultra-fine grain strengthening mechanism, precipitation strengthening mechanism, and dislocation strengthening mechanism. Increasing tempering temperature from 580 to 640 °C decreases the yield strength by 85 MPa, which is mainly attributed to larger carbides size.

AB - Mooring chain steel has been widely used for stabilizing offshore platforms and suffers from stress corrosion cracking. Herein, the microstructure difference, its relation to strength and susceptibility of stress corrosion cracking after tempered at different temperatures have been studied. Result shows increasing tempering temperature increases the proportion of low value CSL boundaries, decreases the local misorientation angle and promotes the precipitation of carbides. These factors induced the decrease of SCC susceptibility at higher tempering temperature. The resistance to SCC at 640 °C tempering temperature is about 20% higher than that of 580 °C at − 1000 mVSCE. The main strengthening mechanism of the ultra-high-strength steel is ultra-fine grain strengthening mechanism, precipitation strengthening mechanism, and dislocation strengthening mechanism. Increasing tempering temperature from 580 to 640 °C decreases the yield strength by 85 MPa, which is mainly attributed to larger carbides size.

KW - microstructure

KW - mooring chain steel

KW - stress corrosion cracking

KW - tempering temperature

UR - https://www.scopus.com/pages/publications/85105137372

U2 - 10.1007/s11665-021-05764-7

DO - 10.1007/s11665-021-05764-7

M3 - 文章

AN - SCOPUS:85105137372

SN - 1059-9495

VL - 30

SP - 4217

EP - 4229

JO - Journal of Materials Engineering and Performance

JF - Journal of Materials Engineering and Performance

IS - 6

ER -

Effect of Tempering Temperature on the Microstructure and Stress Corrosion Cracing Susceptibility of Ultra-High-Strength Mooring Steel

Abstract

Keywords

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