On the corrosion cracking of austenitic stainless steel in molten solar salt: Experiments and modeling

Heng Li; Xiaowei Wang; Xiucheng Feng; Xinyu Yang; Jianqun Tang; Jianming Gong; Seán B. Leen

doi:10.1016/j.solmat.2022.111983

On the corrosion cracking of austenitic stainless steel in molten solar salt: Experiments and modeling

Heng Li
, Xiaowei Wang
, Xiucheng Feng
, Xinyu Yang
, Jianqun Tang
, Jianming Gong
, Seán B. Leen

Mechanical Engineering

Research output: Contribution to a Journal (Peer & Non Peer) › Article › peer-review

15 Citations (Scopus)

Abstract

The mechanical behaviors of 304 and 316 L steels was investigated in air and in solar salt with different contents of chloride impurity under slow strain rate tensile (SSRT) tests using a novel experimental approach at 565 °C. Results show that the yield strength (YS) and ultimate tensile strength (UTS) are negligibly affected by the molten salt corrosion whereas the ductility decreases with increasing contents of chloride. Corrosion cracks initiate and propagate along the grain boundary due to its higher corrosion rate and incremental oxide rupture. Moreover, a damage model that captures the corrosion and chloride effects is proposed and validated.

Original language	English
Article number	111983
Journal	Solar Energy Materials and Solar Cells
Volume	248
DOIs	https://doi.org/10.1016/j.solmat.2022.111983
Publication status	Published - Dec 2022

Keywords

Austenitic stainless steel
Chloride impurity
Corrosion cracking
Damage model
Solar salt
SSRT

UN SDGs

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

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10.1016/j.solmat.2022.111983

Cite this

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title = "On the corrosion cracking of austenitic stainless steel in molten solar salt: Experiments and modeling",

abstract = "The mechanical behaviors of 304 and 316 L steels was investigated in air and in solar salt with different contents of chloride impurity under slow strain rate tensile (SSRT) tests using a novel experimental approach at 565 °C. Results show that the yield strength (YS) and ultimate tensile strength (UTS) are negligibly affected by the molten salt corrosion whereas the ductility decreases with increasing contents of chloride. Corrosion cracks initiate and propagate along the grain boundary due to its higher corrosion rate and incremental oxide rupture. Moreover, a damage model that captures the corrosion and chloride effects is proposed and validated.",

keywords = "Austenitic stainless steel, Chloride impurity, Corrosion cracking, Damage model, Solar salt, SSRT",

author = "Heng Li and Xiaowei Wang and Xiucheng Feng and Xinyu Yang and Jianqun Tang and Jianming Gong and Leen, \{Se{\'a}n B.\}",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

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doi = "10.1016/j.solmat.2022.111983",

language = "English",

volume = "248",

journal = "Solar Energy Materials and Solar Cells",

issn = "0927-0248",

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TY - JOUR

T1 - On the corrosion cracking of austenitic stainless steel in molten solar salt

T2 - Experiments and modeling

AU - Li, Heng

AU - Wang, Xiaowei

AU - Feng, Xiucheng

AU - Yang, Xinyu

AU - Tang, Jianqun

AU - Gong, Jianming

AU - Leen, Seán B.

PY - 2022/12

Y1 - 2022/12

N2 - The mechanical behaviors of 304 and 316 L steels was investigated in air and in solar salt with different contents of chloride impurity under slow strain rate tensile (SSRT) tests using a novel experimental approach at 565 °C. Results show that the yield strength (YS) and ultimate tensile strength (UTS) are negligibly affected by the molten salt corrosion whereas the ductility decreases with increasing contents of chloride. Corrosion cracks initiate and propagate along the grain boundary due to its higher corrosion rate and incremental oxide rupture. Moreover, a damage model that captures the corrosion and chloride effects is proposed and validated.

AB - The mechanical behaviors of 304 and 316 L steels was investigated in air and in solar salt with different contents of chloride impurity under slow strain rate tensile (SSRT) tests using a novel experimental approach at 565 °C. Results show that the yield strength (YS) and ultimate tensile strength (UTS) are negligibly affected by the molten salt corrosion whereas the ductility decreases with increasing contents of chloride. Corrosion cracks initiate and propagate along the grain boundary due to its higher corrosion rate and incremental oxide rupture. Moreover, a damage model that captures the corrosion and chloride effects is proposed and validated.

KW - Austenitic stainless steel

KW - Chloride impurity

KW - Corrosion cracking

KW - Damage model

KW - Solar salt

KW - SSRT

UR - https://www.scopus.com/pages/publications/85138058207

U2 - 10.1016/j.solmat.2022.111983

DO - 10.1016/j.solmat.2022.111983

M3 - Article

AN - SCOPUS:85138058207

SN - 0927-0248

VL - 248

JO - Solar Energy Materials and Solar Cells

JF - Solar Energy Materials and Solar Cells

M1 - 111983

ER -

On the corrosion cracking of austenitic stainless steel in molten solar salt: Experiments and modeling

Abstract

Keywords

UN SDGs

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