Study on stress corrosion behavior of 316L austenitic stainless steel in hot NaOH solution

Yun Liu; Hailong Dai; Sheng Chen; Meng He; Shouwen Shi; Zhe Zhang; Xu Chen

Journal of Materials Research and Technology (May 2024)

Study on stress corrosion behavior of 316L austenitic stainless steel in hot NaOH solution

Yun Liu,
Hailong Dai,
Sheng Chen,
Meng He,
Shouwen Shi,
Zhe Zhang,
Xu Chen

Affiliations

Yun Liu: School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China; Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, Tianjin, 300350, China; Zhejiang Institute of Tianjin University, Ningbo, Zhejiang, 315201, China
Hailong Dai: School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China; Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, Tianjin, 300350, China; Corresponding author. School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
Sheng Chen: Technology Innovation Center of Risk Prevention and Control of Refining and Chemical Equipment for State Market Regulation, China Special Equipment Inspection and Research Institute, Beijing, 100029, China
Meng He: Technology Innovation Center of Risk Prevention and Control of Refining and Chemical Equipment for State Market Regulation, China Special Equipment Inspection and Research Institute, Beijing, 100029, China
Shouwen Shi: School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China; Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, Tianjin, 300350, China; Zhejiang Institute of Tianjin University, Ningbo, Zhejiang, 315201, China
Zhe Zhang: School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China; Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, Tianjin, 300350, China; Zhejiang Institute of Tianjin University, Ningbo, Zhejiang, 315201, China; Corresponding author. School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
Xu Chen: School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China; Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, Tianjin, 300350, China; Zhejiang Institute of Tianjin University, Ningbo, Zhejiang, 315201, China

Journal volume & issue: Vol. 30
pp. 8894 – 8905

Abstract

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In this study, slow strain rate test (SSRT), X-ray photoelectron spectroscopy (XPS), electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM) were used to investigate the stress corrosion behavior of 316L austenitic stainless steel in 50 wt% NaOH solution at 100 °C. In addition, the electrochemical properties of the material were characterized using the EIS technique, and the composition of the corrosion product film was analyzed by XPS. Results show that the mechanical properties of materials deteriorate as the strain rate decreases in the stress corrosion test. However, when the applied strain rate is less than a certain strain rate, the deterioration of mechanical properties tends to be stable. Moreover, appropriate equivalent circuit models are fitted for the stress corrosion behavior of 316L austenitic stainless steel in hot NaOH solution, which can be used to analyze the stress corrosion behavior under various working conditions.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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