Development and industrial exploitation of welding technology for heat-resistant nickel alloys for high-temperature nuclear power plants

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发表日期：

2024年9月6日

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A. F. Shevakin,
P. A. Kharin,
A. B. Korostelev,
M. V. Shishimirov,
V. O. Ivanov,
A. I. Sednev,
Yu. A. Korostelev,
A. P. Pantyukhin

摘要

Heat-resistant nickel alloys are promising materials for manufacturing structural elements used in high-temperature nuclear power plants. Nickel alloys are characterized as difficult-to-weld materials; this is one of the main factors limiting their use. This paper presents the results of the development and industrial exploitation of welding technology for heat-resistant nickel alloy grade CrNi₆₂MoCh₂-VI (EC 199-VI). The quality control results of the obtained welded joints are presented. Notably, the welded joints of the CrNi₆₂MoCh₂-VI alloy exhibit resistance to intercrystalline corrosion and demonstrate improved mechanical characteristics.