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<p>High temperature hydrogen attack is one of the main problems of petrochemical equipment. The degradation process is considered to be irreversible during the steel decarburization. The paper presents research results of the type 09G2S steel samples cut from the wall of a&#xa0;petrochemical reactor, which is subjected to the brittle fracture with complete decarburization of the microstructure after 85&#xa0;thousand hours of operation. Based on the data obtained, a&#xa0;method is proposed for the microstructure and mechanical property recovery using the two-stage heat treatment.</p>

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Restoration of 09G2S steel properties after prolonged high-temperature hydrogen attack

  • 期刊论文

  • 发表日期：

    2025年10月1日

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  • A. V. Nechaeva,
  • V. V. Shalagaev,
  • V. A. Polyanskiy,
  • Yu. A. Yakovlev

摘要

High temperature hydrogen attack is one of the main problems of petrochemical equipment. The degradation process is considered to be irreversible during the steel decarburization. The paper presents research results of the type 09G2S steel samples cut from the wall of a petrochemical reactor, which is subjected to the brittle fracture with complete decarburization of the microstructure after 85 thousand hours of operation. Based on the data obtained, a method is proposed for the microstructure and mechanical property recovery using the two-stage heat treatment.