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<p>The microstructure, phase composition, and parameters of the crystalline structure of high-carbon steels (65G, U8, U10) under plasma surface modification were studied. After treatment of steels with a&#xa0;highly concentrated plasma jet, the hardness increases in 3.5–4.5&#xa0;times compared to the initial state (normalization) and in 150–200 HV compared to volume quenching. This is due to the formation of a&#xa0;highly dispersed martensitic-carbide structure with a&#xa0;higher density of dislocations in the modified zone. The conditions for such mechanisms of phase and structural transformations in steels under plasma modification, which ensure obtaining the optimal level of operational properties, are established.</p>

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Evolution of the high-carbon steel structure under plasma modification

  • 期刊论文

  • 发表日期：

    2025年5月1日

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  • Yu. S. Samotugina

摘要

The microstructure, phase composition, and parameters of the crystalline structure of high-carbon steels (65G, U8, U10) under plasma surface modification were studied. After treatment of steels with a highly concentrated plasma jet, the hardness increases in 3.5–4.5 times compared to the initial state (normalization) and in 150–200 HV compared to volume quenching. This is due to the formation of a highly dispersed martensitic-carbide structure with a higher density of dislocations in the modified zone. The conditions for such mechanisms of phase and structural transformations in steels under plasma modification, which ensure obtaining the optimal level of operational properties, are established.