title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð²Ð¾Ð´Ð¾ÑÐ¾Ð´Ð½Ð¾Ð³Ð¾ Ð¾Ñ ÑÑÐ¿ÑÐ¸Ð²Ð°Ð½Ð¸Ñ Ð½Ð¸Ð·ÐºÐ¾Ð»ÐµÐ³Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð¹ ÑÑÑÐ±Ð½Ð¾Ð¹ ÑÑÐ°Ð»Ð¸
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: Study of hydrogen embrittlement of low-alloy pipe steel
Creators: name: ÐÐ¸ÐºÐ¾Ð»Ð°ÐµÐ²Ð°, ÐÐ½Ð½Ð°
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: 2022
Subjects: Ð¡ÑÐ°Ð»Ñ Ð½Ð¸Ð·ÐºÐ¾Ð»ÐµÐ³Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð°Ñ
Ð²Ð¾Ð´Ð¾ÑÐ¾Ð´Ð½Ð¾Ðµ Ð¾Ñ ÑÑÐ¿ÑÐ¸Ð²Ð°Ð½Ð¸Ðµ
ÑÐ»ÐµÐºÑÑÐ¾Ñ Ð¸Ð¼Ð¸ÑÐµÑÐºÐ¾Ðµ Ð½Ð°Ð²Ð¾Ð´Ð¾ÑÐ¾Ð¶Ð¸Ð²Ð°Ð½Ð¸Ðµ
Ð¼ÐµÑ Ð°Ð½Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÐ²Ð¾Ð¹ÑÑÐ²Ð°
low-alloy steel
hydrogen embrittlement
electrochemical hydrogen charging
mechanical properties

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description: This work is aimed at studying the hydrogen embrittlement of low-alloy pipe steel. In the course of the work, an overview of the existing mechanisms of hydrogen charging, as well as an analysis of published Russian and international literature about hydrogen transportation through pipelines, was carried out. The aim of the work is to evaluate the effect of hydrogen on the mechanical properties of low-alloy tube steel through electrochemical hydrogen charging. With the help of an electrochemical cell, the samples of the materials under study were charged, the hydrogen content in steel was evaluated, the microstructure and microhardness of the hydrogen charged samples were analyzed, and the change in mechanical characteristics was also considered. As a result, using the technical base of the Scientific and technological complex âNew technologies and materialsâ of Peter the Great St.Petersburg Polytechnic University: the technique of electrochemical hydrogen charging has been worked out, including the effective current of charging for the studied steel composition has been determined; an analytical method for defining the hydrogen content in the charged samples was applied and worked out; changes in the mechanical characteristics of steel during preliminary hydrogen charging were analyzed. It was found out that for studied steel, the effective current density of the beginning of active hydrogen charging in a 5% aqueous solution of sulfuric acid is 60 mA/cm2, charging for more than 6 hours makes it possible to obtain a hydrogen concentration in the metal at the level of more than 2 ppm and a reduction in plastic characteristics by 50%.