Development of prediction model for stress corrosion cracking probability in scratched alloy 690TT heat transfer tubes

Rongbo Li; Bin Wu; Fanjiang Meng; Haitao Wang; Dongcen Hou; Hongliang Ming; Jianqiu Wang; En-Hou Han

Corrosion Communications (Sep 2025)

Development of prediction model for stress corrosion cracking probability in scratched alloy 690TT heat transfer tubes

Rongbo Li,
Bin Wu,
Fanjiang Meng,
Haitao Wang,
Dongcen Hou,
Hongliang Ming,
Jianqiu Wang,
En-Hou Han

Affiliations

Rongbo Li: Shanghai Nuclear Engineering Research and Design Institute Ltd. Co., Shanghai 200233, China; Department of Materials Science, Fudan University, Shanghai 200433, China
Bin Wu: Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; Corresponding authors.
Fanjiang Meng: Shanghai Nuclear Engineering Research and Design Institute Ltd. Co., Shanghai 200233, China; Corresponding authors.
Haitao Wang: Institute of Corrosion Science and Technology, Guangzhou 510530, China
Dongcen Hou: Analysis and Test Center, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
Hongliang Ming: Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; Corresponding authors.
Jianqiu Wang: Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; Institute of Corrosion Science and Technology, Guangzhou 510530, China
En-Hou Han: Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; Institute of Corrosion Science and Technology, Guangzhou 510530, China

Journal volume & issue: Vol. 19
pp. 1 – 13

Abstract

Read online

This study investigated stress corrosion cracking (SCC) behavior of scratched areas across various depths and stress on alloy 690TT, through precise loading (252 samples in total) and SCC tests. Resultsindicate that SCC mainly initiates at the side walls of the scratch grooves rather than the bottom (sustains the highest stress level), given the low applied load stress about 13% of that at the bottom. Scratch depth is a more significant factor to SCC initiation in scratch groove than loading stress. A probabilistic model was established to predict SCC initiation induced by scratches of varyingdepths.

Published in Corrosion Communications

ISSN: 2667-2669 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/corrosion-communications

About the journal

Abstract

Keywords