title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð²Ð¾Ð´Ð¾ÑÐ¾Ð´Ð½Ð¾Ð¹ Ñ ÑÑÐ¿ÐºÐ¾ÑÑÐ¸ Ð¿ÑÐ¸ ÑÐ²Ð°ÑÐºÐµ Ñ Ð»Ð°Ð´Ð¾ÑÑÐ¾Ð¹ÐºÐ¸Ñ Ð¸ ÐºÑÐ¸Ð¾Ð³ÐµÐ½Ð½ÑÑ ÑÑÐ°Ð»ÐµÐ¹
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Research of hydrogen embrittlement during welding of cold-resistant and cryogenic steels
Creators: name: Ð¡Ð¼Ð¾ÑÐ¾Ð´Ð¸Ð½, ÐÐ½Ð´ÑÐµÐ¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: Ð¡ÑÐ°Ð»Ñ Ð²ÑÑÐ¾ÐºÐ¾Ð¿ÑÐ¾ÑÐ½Ð°Ñ
Ð¡ÑÐ°Ð»Ñ
Ð½Ð°Ð²Ð¾Ð´Ð¾ÑÐ°Ð¶Ð¸Ð²Ð°Ð½Ð¸Ðµ
Ñ Ð»Ð°Ð´Ð¾ÑÑÐ¾Ð¹ÐºÐ¸Ðµ ÑÑÐ°Ð»Ð¸
Ð±ÐµÐ¹Ð½Ð¸ÑÐ½Ð°Ñ ÑÑÐ°Ð»Ñ
ÐºÑÐ¸Ð¾Ð³ÐµÐ½Ð½ÑÐµ ÑÑÐ°Ð»Ð¸
hydrogenation
cold-resistant steels
bainite steel
cryogenic steels

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description: This work is devoted to estimation of influence of hydrogen embrittlement on properties of cold-resistant bainite and cryogenic 9% - Ni steels. The tasks that were solved during the study: 1. To study the classification and weldability of cold-resistant bainite and cryogenic 9%-Ni steels. 2. Research of welding methods of cold-resistant bainite and cryogenic 9%-Ni steels. 3. Study the microstructure of weld and welded joints, cold-resistant bainite and cryogenic 9%-Ni steels. 4. To study the patterns and causes of hydrogen embrittlement. 5. To develop a test bench for studying hydrogen embrittlement of welded joints. 6. To study mechanical properties of welded joints at hydrogen embrittlement. Based on various analyzed literature sources, the classifications of cold-resistant and cryogenic steels and their weldability have been reviewed. Different methods of welding of cold-resistant and cryogenic steels used in industry have been considered. The microstructures of bainite and cryogenic steels with 9% - Ni content, their morphological structure, as well as the microstructures of their welded joints, the structure of the weld metal and the heat-affected zone have been studied. Different models of hydrogen embrittlement leading to cracks and the reasons causing an increase in hydrogen content in the metal structure have been studied. The availableÂ  solutionsÂ  forÂ  electrochemicalÂ  metalÂ  embrittlement wereÂ  reviewedÂ  based on which a bench for electrochemical embrittlement of bainite cold-resistant and cryogenic 9% - Ni steel was designed. Various experiments on the effect of hydrogen on the microstructure and mechanical properties of bainite cold-resistant and cryogenic 9% - Ni steels were studied, which resulted in a natural conclusion about the reduction of mechanical properties as a result of the influence of hydrogen, causing hydrogen embrittlement.