Effects of (Ti, Mo)C precipitation on the microstructure, impact toughness, and sulfide stress corrosion cracking resistance of linepipe steels
Year: 2024
Type: article
Abstract: There is a growing need to develop high-performance linepipes owing to the accelerated resource depletion attributable to the increasing interest in mining in extreme environments. (Ti, Mo)C precipitation can help secure the strength , low-temperature toughness, and sulfide stress corrosion cracking (SSCC) resistance required for linepipes. In this study, high-strength low-alloy (HSLA) steels with (Ti, Mo)C precipitation and without Ti and Mo were fabricated to analyze the effects of (Ti, Mo)C precipitation on the microstructure, impact toughness, and SSCC resistance of linepipes. The (Ti, Mo)C precipitation behavior varied and caused differences in the phase fraction, grain size, and dislocation density . Such differences in the microstructure improved the strength and low-temperature impact toughness. The SSCC resistance was significantly improved. In conclusion, (Ti, Mo)C precipitation has the potential to improve the properties required for fabricating linepipes.
Authors: Seoyoon Gong, Seungon Lim, Kyu-Tae Kim, Yong-Jae Yu, S.E. Shin
Institutions: Sunchon National University, Hyundai Steel (South Korea)
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,430
OpenAlex ID: W4405212113