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Fretting Corrosion-Induced Microstructural Evolution of Alloy 690tt Tube in High Temperature Pressurised Water

29 Pages Posted: 26 Jul 2022

See all articles by Yusheng Zhang

Yusheng Zhang

University of Science and Technology of China (USTC) - School of Materials Science and Engineering

Bin Wu

University of Science and Technology of China (USTC) - School of Materials Science and Engineering

Hongliang Ming

University of Science and Technology of China (USTC) - School of Materials Science and Engineering

Yifeng Li

Shanghai University

Zhiming Zhang

Institute of Corrosion Science and Technology

Jianqiu Wang

University of Science and Technology of China (USTC) - School of Materials Science and Engineering; Chinese Academy of Sciences (CAS) - Key Laboratory of Nuclear Materials and Safety Assessment

En-Hou Han

Chinese Academy of Sciences (CAS) - Key Laboratory of Nuclear Materials and Safety Assessment

Abstract

The friction-induced microstructural evolution of Alloy 690TT tubes submerged in a high temperature pressurised water was investigated. Two typical local regions characterised by significantly different worn morphologies (resulting from the stress field and material couple) were investigated in detail. A thin third-body layer and a thick Fe-rich layer were observed and their oxidation behaviour was analysed. Moreover, the main oxide was spinel, whereas the amorphous band was only observed in the Fe-rich layer. The tribologically transformed structure is formed by the mechanism of discontinuous dynamic recrystallisation . Finally, the microstructural evolution of the two areas during fretting corrosion is discussed.

Keywords: Fretting corrosion, Alloy 690TT, High temperature pressurised water, Oxidation, Microstructure

Suggested Citation

Zhang, Yusheng and Wu, Bin and Ming, Hongliang and Li, Yifeng and Zhang, Zhiming and Wang, Jianqiu and Han, En-Hou, Fretting Corrosion-Induced Microstructural Evolution of Alloy 690tt Tube in High Temperature Pressurised Water. Available at SSRN: https://ssrn.com/abstract=4172626 or http://dx.doi.org/10.2139/ssrn.4172626

Yusheng Zhang

University of Science and Technology of China (USTC) - School of Materials Science and Engineering ( email )

Bin Wu

University of Science and Technology of China (USTC) - School of Materials Science and Engineering ( email )

Hongliang Ming (Contact Author)

University of Science and Technology of China (USTC) - School of Materials Science and Engineering ( email )

Yifeng Li

Shanghai University ( email )

149 Yanchang Road
SHANGDA ROAD 99
Shanghai 200072, 200444
China

Zhiming Zhang

Institute of Corrosion Science and Technology ( email )

Jianqiu Wang

University of Science and Technology of China (USTC) - School of Materials Science and Engineering ( email )

Chinese Academy of Sciences (CAS) - Key Laboratory of Nuclear Materials and Safety Assessment ( email )

Shenyang
China

En-Hou Han

Chinese Academy of Sciences (CAS) - Key Laboratory of Nuclear Materials and Safety Assessment ( email )

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